JP2001145137A - Telephone exchange system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a telephone exchange system which can accommodate many trunks and is improved in reliability, and to provide capability of call connection processing. SOLUTION: This telephone exchange system is equipped with communication terminal devices 8 and switching devices 1A and 1B, which are connected to those devices directly by lines and perform switching operations and each communication terminal device 8 is equipped with handsets 8-1-1 and 8-1-2, a speech switch 8-30 which sets a channel by connecting the handsets 8-1-1 and 8-1-2 to the lines, and a storage device 8-16, which stores state information regarding the states of the switching devices 1A and 1B, and the state information of the switching devices 1A and 1B is stored in the storage device 8-16. When originating or terminating answer operation is done, a controller 8-14 performs speech connecting operation according to the state information.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone exchange system configured to accommodate a large number of office trunks and leased line trunks with respect to the number of terminal devices accommodated.

[0002]

2. Description of the Related Art A conventional telephone exchange system has a configuration shown in FIG.

[0003] In FIG. 61, the telephone exchange system includes a communication path switch (SW) 611. The communication path switch 611 accommodates a telephone terminal 612 such as a telephone,
An extension circuit (L) for controlling connection of the telephone terminal 612
IN) 613, and a trunk (TRK) 614 that accommodates office lines or leased lines and controls connection of these office lines or leased lines.

[0004] A central control unit (CC) 615 controls the entire telephone exchange system, and performs call control between the telephone terminals 612 and between the telephone terminal 612 and an office line or a dedicated line. The storage device (MM) 616 includes the central control device 61
5 stores a program for controlling the telephone exchange system, station data, and various tables, and is connected to the central control unit 615 by a control system bus 617. The control system bus 617 includes a communication path switch 6.
11 are connected, and although not shown,
Central control unit 615, extension circuit 613 and trunk 61
4 is logically connected. Thereby, the communication path switch 611, the extension circuit 613, and the trunk 61
4 is operating under the control of the central controller 615.

In such a configuration, in the case of a normal telephone exchange system, one of the objectives is to implement the number of trunks corresponding to the traffic volume. Line capacity (trunk 614
Is generally n> m.

[0006]

However, banks,
A telephone exchange system (also called a dealing telephone system) that facilitates communication between dealers and customers in order to buy and sell foreign exchange and bonds (hereinafter referred to as dealing) in financial institutions such as brokers.
In the case of one customer, for example, when a foreign exchange price movement occurs, it is necessary to instantaneously select and communicate with a specific customer from among a large number of customers. Accommodates a number of trunks.

[0007] Therefore, in the case of a telephone exchange system used for dealing, in FIG. 61, the relationship between the number n of telephone terminals 612 and the number m of trunks 614 is n <m.

In order to accommodate a large number of trunks as described above, a large-scale telephone exchange system (private telephone exchange) may be used, but in this case, the telephone exchange system loses all communication due to a failure or the like. The problem that the possibility is large arises. Further, in the case of a large-scale telephone switching system, the load on the central control unit is increased, so that there is a problem that the time required for call connection becomes longer. These are the biggest challenges for dealing operations that require timely and accurate communication between dealers and customers.

Accordingly, an object of the present invention is to provide a telephone exchange system capable of accommodating a large number of trunks and improving reliability and call connection processing capability.

[0010]

According to the present invention, there is provided a telephone exchange system comprising a plurality of communication terminal devices and an exchange device which connects these directly via a line and performs an exchange operation.
A communication path switch for performing an exchange connection relating to a call between the plurality of communication terminal apparatuses; a detection unit for detecting a change in the call state; and a communication state when the detection unit detects a change in the call state. State information generating means for generating state information including a state type indicating the content of the information, and transmitting the state information generated by the state information generating means to at least one of the plurality of communication terminal devices via the line Transmitting means for each of the plurality of communication terminal devices, at least one handset including a transmitter and a receiver, a communication means for connecting the handset to the line and setting a communication path; At least one call request unit for requesting a used call, storage means for storing call state information relating to a call state of the switching device, and Receiving means for receiving the state information via a line, and storage control for rewriting the call state information corresponding to the call request means in the storage means in accordance with a state type in the state information received by the receiving means Means, when the call request means is operated, by referring to the call state information stored in the storage means, to determine whether the operation of the call request means is a call operation or an incoming call response operation, When the result of the determination is a call operation, call control means for creating call information indicating that the operation is a call operation and requesting the switching device to perform a call path connection operation; At the time of the operation, response information indicating that it is a response operation is created, and response control means for making a request for a connection operation of a communication path to the switching device is provided.
The plurality of communication terminal devices and the switching device perform a communication connection operation in conjunction with each other.

[0011]

The communication terminal device has various information necessary for the switching device to perform the switching operation, and the communication terminal device can perform the switching operation and other control operations autonomously. To reduce

As a result, it is possible to provide a telephone exchange system capable of improving reliability and call connection processing capability.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings.

§1. Overview of system configuration

FIG. 1 is a diagram showing a configuration example of a telephone exchange system according to the present invention.

In FIG. 1, the telephone exchange system has two sets of exchanges (EX-A and EX-B), an exchange A (EX-A) and an exchange B (EX-B). And, those exchange devices (EX-A and EX-
B) includes speech path switches (SW) 1A and 1B, respectively. Each of the speech path switches 1A and 1B accommodates an office line or a dedicated line, and controls connection of the office line or the dedicated line. (TRK) 4A and 4B are connected.

The terminal device 8 is a terminal device mainly used as a call stand for the above-described dealing call, and has a function of instantly selecting a specific customer from a large number of customers. . The terminal device 8 includes a dedicated extension circuit (DLI) connected to the communication path switches 1A and 1B.
N) 9A and the dedicated line extension circuit 9B. The dedicated extension circuits 9A and 9B transmit and receive a call control message described later with the terminal device 8.

Each of the central control units (CC) 5A and 5B includes an exchange A (EX-A) and an exchange B (EX-A).
B) is controlled in its entirety, between terminal devices 8 and between terminal devices 8.
And call control between the office line and the dedicated line. The storage devices (MM) 6A, 6B are central control devices 5A, 5B.
Stores programs for controlling the switching devices (EX-A and EX-B), station data, and various tables, and is connected to the central control devices 5A and 5B by respective control system buses 7A and 7B. ing. The control system buses 7A and 7B are connected to communication path switches 1A and 1B, respectively. Further, although not shown, the central control devices 1A and 1B, the dedicated extension circuits 9A and 9B, and the trunk 4A , 4B are logically connected to each other. As a result, the communication path switches 1A and 1B, the dedicated extension circuits 9A and 9
B and the trunks 4A and 4B are
A and 5B operate under control.

Further, the central control unit 5A and the central control unit 5B operate completely independently, that is, the exchange A (EX-A) and the exchange B (EX-B) are independent of each other. It is a system that operates.

Thus, in the telephone exchange system having the configuration shown in FIG. 1, a plurality of terminal devices 8 are connected to two sets of exchange devices (EX-A and EX-B) via the dedicated extension circuits 9A and 9B. Therefore, each terminal device 8
Is the sum of the number (m1) of office lines and leased lines accommodated by the exchange A (EX-A) and the number (m2) of office lines and leased lines accommodated by the exchange B (EX-B), that is, , M1 and m2 can be accessed to the total number of office lines and dedicated lines.

FIG. 2 shows ordinary telephone terminals 2A and 2 conventionally used in the telephone exchange system having the configuration shown in FIG.
B is a diagram showing an example of a configuration in a case where telephone terminals 2A and 2B and a terminal device 8 for dealing call are mixed together with B added.
In the dealing telephone system, in addition to the terminal device 8 handled by the dealer, conventional telephone terminals 2A and 2B used by staff members who back up the dealing business can be accommodated, and mutual communication can be established. I have. Note that the telephone terminals 2A and 2B are
Extension circuits (LIN) 3A, 3 connected to A, 1B
The connection is controlled by B, but since this is the same as the control that has been performed conventionally, detailed description is omitted.

FIG. 3 shows a configuration example of a telephone exchange system composed of three sets of exchanges A, EX-A, B (EX-B), and C (EX-C). FIG. This indicates that a large-capacity system can be configured by adding switching devices according to the required number of office lines and dedicated lines.

FIGS. 1 to 3 show an example of the configuration of the telephone exchange system according to the present invention. An important point in this configuration is that, from the viewpoint of the system, the person who handles the terminal device 8 needs Must not be conscious of the line corresponding to the above and the switching equipment accommodating the conventional telephone terminal. That is, from the viewpoint of an individual terminal device, a plurality of switching devices must function as if they were a set of switching devices. This is a problem that occurs because each switching device operates independently in order to maintain the processing capability of the switching devices.

According to the present invention, the terminal device, which can be said to be a control contact point of each switching device, includes means for selecting a switching device.
Furthermore, by providing a part of the call control function that should be processed by the switching device, a plurality of switching devices appear as if they were a set of switching devices.

The description of the embodiment shown in section 2 and thereafter is based on the premise that the configuration of the telephone exchange system is the configuration shown in FIG.

§2. Hardware configuration

2.1 Configuration of switching equipment

The switching device has the same configuration as described above, but has a dedicated extension circuit (DLIN) provided to execute transmission and reception of information (call control message) for controlling a call with a terminal device. (FIGS. 2, 9A and 9B) will be described in more detail.

A dedicated extension circuit (DLIN) is an embodiment for improving the effectiveness of the present invention, in which a digital interface (an ISDN basic interface having 2B + D channels) is connected between a terminal device and a switching device. Hardware.

The details will be described below with reference to FIG.

In FIG. 6, a dedicated extension circuit (DLIN)
Is equipped with a processing processor (MPU) 9-1 for controlling the entire dedicated extension circuit,
A and 5B transmit and receive control information, and also transmit and receive a call control message to and from the terminal device 8. The control procedure or processing method performed by the processing processor 9-1 is programmed in advance in a fixed storage device (ROM) 9-2, and data such as information on the progress is stored in a temporary storage device (RAM) 9-3. While executing the processing according to the program. Further, a call control message transmission / reception buffer 9-5 is provided for transmitting / receiving a call control message to / from the terminal device 8, and the call control message transmission / reception buffer 9-5 includes a transmission circuit 9-6 and a reception circuit. 9-7 are connected. The transmission circuit 9-6 includes:
IS which is an interface for connecting to the terminal device 8
This is a circuit for transmitting a call control message to the terminal device 8 by a signal channel (D channel) 9-8 of the DN basic interface, and a receiving circuit 9-7 is transmitted from the terminal device 8 by a D channel 9-8. This is a circuit for receiving the call control message. Further, an information transmission / reception buffer 9-10 for transmitting / receiving control information to / from the central control devices 1A and 1B of the switching device is provided. The information transmission / reception buffer 9-10 is connected to the control system buses 7A and 7B of the switching device. It is connected. Further, the processing processor 9-
1. Each of the fixed storage device 9-2, the temporary storage device 9-3, the call control message transmission / reception buffer 9-5, and the information transmission / reception buffer 9-10 is connected to the control bus 9-4.

With this configuration, the processing processor 9-1
The transmission and reception of control information between the central control units 1A and 1B are performed via a control bus 9-4 and an information transmission / reception buffer 9-10.
Is transmitted and received via the control bus 9-4 and the call control message transmission / reception buffer 9-5.

The B1 channel 9-9-1 and the B2 channel 9-9-2, which are the two communication channels, are not logically modified, and the communication path switches 1A, 1
B. The B1 channel 9-9-1, the B2 channel 9-9-2, and the D channel 9-8 are actually digitally communicated by time-division multiplexing. I have. Therefore, FIG.
Now, B1 channel 9-9-1, B2 channel 9-9-
2, and a circuit for time-division multiplexing the D-channels 9-8 and a circuit for separating time-division multiplexing are omitted.

2.2 Configuration of Terminal Device

Next, a description will be given of a hardware configuration of the terminal device 8 which is mainly used as a call stand for a dealing call.

FIG. 4 is a diagram showing a board of the terminal device 8. In the present embodiment, an example in which two telephone handsets 8-1-1 and 8-1-2 are provided will be described.

In FIG. 4, the left and right handsets 8-1
In addition to -1 and 8-1-2, a button 'extension 1' 8-2-1 which corresponds to a virtual extension circuit (extension memory) and is used to communicate with another terminal device and a conventional telephone terminal. And 'ext. 2' 8-2-2 and their buttons 'ext. 1' 8-2
8-3 corresponding to -1 and 'extension 2' 8-2-2
-1 and 8-3-2, buttons 'trunk 1' 8-4-1 to 'trunk P'8-4-p for calling and answering incoming / outgoing calls to the office line or leased line, and their buttons' trunk Lamps 8-5-1 to 8-5-P corresponding to 1'8-4-1 to 'trunk p'8-4-p, and a button' autodial 1'8 for automatically calling the other party -6
1 to 'autodial q'8-6-q and their corresponding buttons' autodial 1'8-6-1 to' autodial q'8-6-q
-7-q and a dial key group 8 for dialing
-10, a numeric display 8-9 for displaying numbers, etc., and a button for disconnecting a call on the left handset 8-1-1, 'Left disconnect' 8-8-1 and a right handset 8-1-2. Button to disconnect the call on the 'Disconnect right' 8-8-2
The button "double" for arbitrarily setting whether the right and left handsets can be used, that is, whether to use one handset (single hand) or two handsets (double hand) hand'
8-11, a lamp 8-12 corresponding to the button "double hand" 8-11, and an incoming ringer 8-13 for audibly displaying an incoming call.

FIG. 5 is a block diagram showing a hardware configuration of the terminal device 8 having the board configuration shown in FIG.

In FIG. 5, the terminal device 8 includes a call control processor (MPU) 8-14 for controlling the entire terminal device, and is connected to a control bus 8-17. The call control processor 8-14 performs control according to a program stored in a fixed storage device (ROM) 8-15 connected to the control bus 8-17. Temporary storage (RAM)
Reference numeral 8-16 is connected to a control bus 8-17, and various kinds of variable data, for example, different tables corresponding to each delivery station, or temporary data generated during the execution of the call control processor 8-14. Information is stored. In this way, the call control processor 8-14, like the other processor systems, stores the fixed storage device 8 via the control bus 8-17.
-15 and the temporary storage device 8-16 are accessed and controlled.

The control bus 8-17 includes a call control message transmission / reception buffer 8-18, a numeric display controller 8-25, a lamp driver 8-26, a button scan buffer 8-27, a ringer driver 8-28, A communication path switch (T-SW) 8-30 is connected. Then, a call control message transmission / reception buffer 8-18, a numeric display controller 8-25, a lamp driver 8-2
6. Button scan buffer 8-27, ringer driver 8-28, and communication path switch (T-SW) 8-30
All operate under the control of the call control processor 8-14.

Call control message transmission / reception buffer 8-18
Transmits and receives a call control message to and from the switching equipment (EX-A and EX-B).
A receiving circuit 8-19 for receiving a call control message from (EX-A) via the D channel 8-23 of the ISDN basic interface, and a call via the D channel 8-23 to the exchange A (EX-A). The transmission circuit 8-20 for transmitting the control message and the switching equipment B (EX-B)
A receiving circuit 8-21 for receiving a call control message via a channel 8-24 and a switch D (EX-B)
A transmission circuit 8-22 for transmitting a call control message via a channel 8-24 is connected.

The numeral display controller 8-25 is connected to the numeral display 8-9 and the call control processor 8-25.
An arbitrary numeral is displayed on the numeral display 8-9 based on the control from 14.

The lamp driver 8-26 includes a lamp 8-3.
-1 and 8-3-2, lamps 8-5-1 to 8-5
P, lamps 8-7-1 to 8-7-q, and lamp 8
-12 is connected, and the blinking of the lamps is controlled so that the states of the buttons corresponding to those various lamps are displayed.

The button scan buffer 8-27 includes buttons "ext. 1" 8-2-1 and "ext. 2" 8-2-2, buttons "trunk 1" 8-4-1 through "trunk P" 8--
4-p, button 'auto dial 1' 8-6-1 to 'auto dial q' 8-6-q, button 'double hand' 8-11, button 'left cut' 8-8-1, button 'right' Disconnect '8-8-2 and dial key group 8-10
Are connected, and the various buttons are scanned to detect the opening and closing thereof.

The ringer driver 8-28 receives the ringer 8
-13 is connected to perform control for audibly displaying an incoming call.

The communication path switch 8-30 includes a left communication circuit 8-29-1 for connecting the left handset 8-1-1,
Right communication circuit 8-2 for connecting right handset 8-1-2
9-2 is connected to the switching device A (EX-
A) ISDN basic interface B connected to
One channel 8-31-1 and B2 channel 8-31-
2 and I connected to the exchange B (EX-B)
B1 channel 8-32-1 of SDN basic interface
And B2 channel 8-32-2. This 4
Each of the call channels is associated with a call control processor 8-14.
Controls the switching of the communication path switch 8-30, so that the left communication circuit 8-29-1 corresponding to the left handset 8-1-1 and the right communication circuit 8-29 corresponding to the right handset 8-1-2. 29-2.

As described above, the B1 channel 8-
31-1, B2 channel 8-31-2, and D channel 8-23, and B1 channel 8-32-1, B2 channel 8-32-2, and D channel 8-24 are actually time division. Although digital communication is performed by multiplexing, here, the space division type is described for convenience. Therefore, in FIG. 5, a circuit for performing time division multiplexing of the B1, B2, and D channels and a circuit for separating the time division multiplexing are omitted.

In the case of the system configuration as in the present embodiment, that is, when a terminal device having two handsets is connected to two sets of exchanges, the left handset is connected to B1 of each exchange. It is preferable to control the right handset to be connected by the B2 channel of each switching device. In the case of such control, only one B1 channel is required for a terminal device of one handset, and three communication channels of B1 channel, B2 channel, and B3 channel are required for a terminal device of three handsets. Become.

Further, when the number of switching devices is three or more, the number of pairs of the B1 channel and the B2 channel can be increased easily and flexibly.

§3. Configuration of tables and temporary memory

The operation of call control will be described in section 5 and thereafter. Prior to this, in this section,
A table and a temporary memory used for executing the call control will be described, and a call control message transmitted and received between the exchange and the terminal will be described in the next section.

3.1 Terminal Device Table and Temporary Memory

The table and the temporary memory of the terminal device 8 are as follows:
It is stored in the temporary storage device 8-16 shown in FIG.

The table is registered in advance in accordance with the operating conditions of the terminal device 8, is backed up by a battery or the like, and is configured not to be erased by a power failure or the like. It is a table to do. It is clear that this table can be changed at any time when the operating conditions of the telephone exchange system change. 7 to 13 show tables used in the present embodiment.

The temporary memory is a memory for storing information that changes every moment in the course of performing call control. In addition,
The temporary memory used in this embodiment is shown in FIGS.
Is shown in

First, the table will be described.

FIG. 7 is a diagram showing a trunk button table. In FIG. 7, the trunk button table corresponds to the button “trunk 1” 8 in the board view of the terminal device 8 shown in FIG.
This is a table provided corresponding to -4-1 to 'trunk p' 8-4-p, and includes information (switching device number) 701 indicating a switching device to be connected, and information (trunking position) indicating a trunk accommodation position. (Accommodation position number or trunk number)
702, information indicating the type of incoming call sound at the time of an incoming call (type of ringing tone) 703, and information indicating the priority to be captured (capture priority) 704 when calling a trunk by auto dialing are registered. In this table, any p trunks among the m1 trunks accommodated in the exchange A (EX-A) and the m2 trunks accommodated in the exchange B (EX-B) are registered. can do.

FIG. 8 is a diagram showing an auto dial button table. In FIG. 8, the auto dial button table includes buttons “auto dial 1” 8-6-1 to “auto dial q” in the board view of the terminal device 8 shown in FIG.
8-6-q is a table provided corresponding to
Information (auto-dial type) 801 indicating whether the call is for a trunk or a call for an extension, and information (dial number) 802 indicating the dial of the destination are registered.

FIG. 9 is a terminal number table. In this terminal number table, the terminal number 901 of the terminal device itself is registered, and when the terminal state change information transmitted from the switching device and indicating that the state of the terminal has changed is received, the terminal state change information is transmitted. Is used to determine whether the information is information generated in response to a status change of the own terminal device or information generated in response to a status change of another terminal device.

FIG. 10 is a handset mode table. In this handset mode table, information (handset mode) indicating whether the operator of the terminal device is right-handed or left-handed is registered. Generally, a right-handed operator grips the handset with the left hand and operates buttons and the like with the right hand, and a left-handed operator performs the opposite operation. Therefore, the priority of the left and right handsets is determined based on this table.

FIG. 11 is a call switching apparatus number table. The calling exchange apparatus number table includes the exchange apparatus (when an outgoing call is made with the button 'ext. 1' 8-2-1 or 'ext. 2' 8-2-2 in the board view of the terminal device 8 shown in FIG. EX
-A) Information (switching device number) 110 indicating which of the switching devices A and switching device (EX-B) B is to be called.
1 is registered. It should be noted that when making a call to the dealing communication terminal device 8, it is clear that it is sufficient to make a call to either of the switching devices. However, for example, when the conventional telephone terminals (2A, 2B) are separately accommodated in the switching devices A and B as shown in FIG. 2, the terminal numbers to be subsequently dialed It is necessary to select an exchange by identifying the (extension number), but a detailed description is omitted in the present embodiment.

FIG. 12 is a left hand continuous mode table. In the left hand continuous mode table, for example,
When talking on the line corresponding to the button 'trunk 1' 8-4-1 with the left handset, when the button 'trunk 2' 8-4-2 is pressed, the 'trunk 1' 8--
Disconnect the line corresponding to 4-1 and 'trunk 2' 8-4
Information (continuous mode) 1201 indicating whether or not the operation for connecting to the line corresponding to -2 is permitted is registered.

FIG. 13 is a right hand continuous mode table. The right hand continuous mode table includes the continuous mode 1 as in the left hand continuous mode table shown in FIG.
301 is registered. For this control,
This will be described in detail in Section 5 Handset Selection Control.

Next, the temporary memory will be described.

FIG. 14 shows the left (L) handset memory. In FIG. 14, the left (L) handset memory has information (state type) 1401 indicating the state of the left call circuit 8-29-1, information (switching device number during call) 1402 indicating the switching device during a call, Information indicating the button of the middle trunk (trunk button number) or information indicating the extension button during a call (extension button number) 1403, and information indicating the auto-dial button when an auto-dial call is made (auto-dial button) No.) 1404 is held, and mainly when a disconnection operation is performed, call control is executed based on the information.

FIG. 15 shows the right (R) handset memory. In FIG. 15, information (state type) 1 indicating the state of the right communication circuit 8-29-2 is stored in the right (R) handset memory similarly to the left (L) handset memory of FIG.
501, information indicating a switching device during a call (switching device number during a call) 1502, information indicating a trunk button during a call (trunk button number), or information indicating an extension button during a call (extension button number) 1503; When an auto-dial call is made, information (auto-dial button number) 1504 indicating the auto-dial button is held.

FIG. 16 shows an extension call control memory (extension memory 1) for performing call control of the extension corresponding to the button 'extension 1' 8-2-1. In FIG. 16, the extension memory 1 includes information (state type) 1601 indicating the connection state of the button “extension 1” 8-2-1, information (switching device number) 1602 indicating the switching device that has accepted the extension incoming call, And information (call extension number) 1603 indicating the extension number of the caller. The extension number is used to display the extension number of the other party on the numeric display 8-9 during extension call control.

FIG. 17 shows an extension call control memory (extension memory 2) for performing call control of the extension corresponding to the button 'extension 2' 8-2-2. In FIG. 17, the extension memory 2 is the same as the extension memory 1, and the button 'extension 2'8-
Information (state type) 1701 indicating the connection state of 2-2;
Information (switching device number) 1702 indicating the switching device that has accepted the extension incoming call, and information (calling extension number) 1703 indicating the extension number of the caller are held.

Here, the extension memory 1 and the extension memory 2
It is desirable that connection between the left and right handsets, the exchange device A, and the exchange device B is not restricted at all. This is because the left handset 8-1-1 has the button 'ext. 1'-
Exchange device A (EX-A), button 'ext. 1'-exchange device B (EX-B), button 'ext. 2'-exchange device A (EX
-A) and button 'ext. 2'-exchange B (EX-
B) The four types of connection are possible, and the right handset 8-1-2 is also capable of the four types of connection. This means that, in a telephone switching system configured by using a plurality of switching devices that operate independently of each other, when an extension call and an incoming call are made, the plurality of switching devices are as if they were one switching device from the viewpoint of the operator. It is important to make it function like.

FIG. 18 shows a trunk memory accommodating the exchange A. The exchange apparatus A-accommodated trunk memory holds information (state type) 1801 indicating the state of all trunks (for m1 trunks) accommodated in the exchange apparatus A (EX-A).

FIG. 19 shows the trunk memory for accommodating the switching device B. The switching device B-accommodated trunk memory holds information (status type) 1901 indicating the status of all trunks (for m2 trunks) accommodated by the switching device B (EX-B).

By providing the trunk memory accommodating the switching device A and the trunk memory accommodating the switching device B in the terminal device 8, the terminal device 8 allows the trunks accommodated by the switching device (for all m1 + m2 trunks). Can be recognized, and a part of the call control for the outgoing and incoming calls from the trunk is shared by the terminal device 8 side.

FIG. 20 shows a double hand button memory. The contents of this double hand button memory change in conjunction with the operation of the button "double hand" 8-11, and information (state type) indicating whether the state of the terminal device is a single hand state or a double hand state ) 2001 is held.

3.2 Switching Device Table and Temporary Memory

The tables and temporary memories of the exchange devices (EX-A and EX-B) are stored in the storage devices 6A and 6B in FIG.

The table and temporary memory on the switching device side have various office data, subscriber data, various memories for call control, other maintenance operations, and billing data. Here, the present invention relates to the present invention. Only tables and temporary memories are disclosed.

First, the table will be described.

FIG. 21 is a terminal number table. This terminal number table is assigned corresponding to each terminal device, and is used to notify which terminal device has received a change in the state when an extension call is received or when the state of the terminal device changes. Necessary information (terminal number) 2101 is stored. In the terminal number table, all of the plurality of switching devices (switching device A and switching device B) are provided with exactly the same configuration.

Next, the temporary memory will be described.

FIG. 2 shows a temporary memory used in this embodiment.
2 to 25.

FIG. 22 shows the extension memory 1. The extension memory 1 stores a button “extension 1” 8-2-
1, information indicating the state of the 'extension 1' (state type) 2201, information indicating the type of the connected handset (handset type) (from the exchange device, B1 channel or B2 Channel)
2202 and information (other party accommodation position number) 2203 indicating the accommodation position of the partner terminal device during an extension call.

FIG. 23 shows the extension memory 2. The extension memory 2 is provided corresponding to the button 'extension 2' 8-2-2 for each terminal device 8, similarly to the extension memory 1.
Information (state type) 230 indicating the state of the 'extension 2'
1. Information indicating the type of the connected handset (handset type) 2302, and information indicating the accommodation position of the partner terminal device at the time of extension call (partner accommodation position number) 2303
Holding.

FIG. 24 shows a terminal memory. This terminal memory is provided corresponding to each of two communication channels B1 channel (L) and B2 channel (R) for each terminal device, and information for determining whether the connection destination is a trunk or an extension ( Connection type) 2401, information indicating an accommodation position of a connected trunk or information indicating an extension memory (trunk accommodation position number / extension memory number) 2402, and information (reception dial number) 2403 indicating a number dialed by the terminal device keeping.

FIG. 25 shows a trunk memory. This trunk memory holds information (state type) 2501 indicating the state of the trunk accommodated in each switching device.

The information stored in the trunk memory is always transmitted as a call control message to all the terminal devices, and is copied to the trunk memory of the terminal device 8 shown in FIGS. 18 and 19. Things.

§4. Call control message

The communication protocol between the switching device and the terminal device in the present embodiment is based on ISDN recommended by CCITT.
It conforms to the basic interface. However, the layer 3, that is, the content of the call control message has the following configuration.

Each of the call control messages described below is transmitted on the D channel.

4.1 Call control message from terminal equipment to exchange equipment

FIGS. 26 to 31 show call control messages transmitted from the terminal device to the switching device.

At the beginning of each call control message,
An identifier for the receiver to identify the information is provided.

FIG. 26 shows a call control message (call information) transmitted when a terminal device makes a call, and the identifier is a call information identifier 2601. The call information includes information (call type) 2602 indicating a call type such as a trunk call, an extension call, an auto-dial trunk call, and an auto-dial extension call, and a left or right handset that made a call. Indicating handset type (handset type) 2
603, information indicating the accommodation position of the trunk at the call destination or information indicating the extension memory used for the call (trunk accommodation position number / extension memory number) 2604, and information indicating the dial number when calling by auto dialing (Dial number) 2605 is included.

FIG. 27 shows a call control message (response information) transmitted when the terminal device responds to the incoming call, and the identifier is a response information identifier 2701. The response information includes information (response type) 2702 indicating whether the response is a trunk response or an extension response, information (handset type) 2703 indicating the type of the handset that responded to the left or right, and information or response indicating the accommodation position of the responding trunk. 2704 contains information indicating the extension memory used (trunk accommodation position number / extension memory number).

FIG. 28 shows a call control message (dial button information) transmitted when the dial button is pressed. The identifier is a dial button information identifier 2801. The dial button information includes information indicating the type of the left or right handset (handset type) 2
802 and information (dial code) 2803 indicating the dial type of “1” to “0”, “*”, “#”.

FIG. 29 shows a call control message (disconnection information) transmitted when disconnecting a line during a call, and the identifier is a disconnection information identifier 2901. The disconnection information includes whether the button “left disconnection” 8-8-1 for disconnecting the left handset side is pressed or the button “right disconnection” 8-8-2 for disconnecting the right handset side is pressed. Information (handset type) 2902 indicating whether the communication has been performed.

FIG. 30 shows the extension incoming call information (FIG. 33) of the call control message received from the switching device (details will be described later).
Is a call control message (extension incoming call completion information) transmitted when an incoming call is possible, and the identifier is an extension incoming call completion information identifier 3001. The extension extension incoming call completion information includes information (extension memory number) 3002 indicating the extension memory that was able to receive a call, and extension incoming call information from the exchange (see FIG. 3).
The information (caller accommodation position number) 3003 indicating the accommodation position of the caller notified by 3) is included.

FIG. 31 shows a call control message (extension call incompletion information) transmitted when a call cannot be made to the extension call information (FIG. 33) of the call control message received from the switching device. , The identifier is the extension incoming call incomplete information identifier 3
It is 101. The extension incoming call uncompleted information is information (caller accommodating position number) 3 indicating the accommodating position of the caller notified by the extension incoming call information (FIG. 33) from the exchange.
102 are included.

4.2 Call control message from exchange to terminal

FIG. 32 and FIG. 33 show call control messages transmitted from the switching equipment to the terminal equipment.

FIG. 32 shows a call control message (state information) for notifying the terminal device every time a change in state occurs on the switching device side.
It is 201. This status information includes trunk empty,
Information (state type) 3202 indicating the contents of state changes such as trunk call, trunk call, extension empty, and extension call;
Information indicating the type of the left or right handset (handset type) 3203, information indicating the accommodation position of the trunk whose state has changed or information indicating the extension memory whose state has changed (trunk accommodation position number / extension memory number) 320
4 and information (terminal number) 3205 for notifying the terminal device that has received the outgoing / incoming response when there is an outgoing / incoming response from a plurality of terminal devices.

Of the state changes that occur in the switching equipment, an extension incoming call requires a different call control than other state changes, so that a unique call control message is formed.

FIG. 33 shows a call control message (extension incoming call information) transmitted at the time of an extension incoming call, and the identifier is an extension incoming call information identifier 3301. The extension incoming call information includes information indicating the accommodation position of the extension calling side (caller accommodation position number) 3302 and information indicating the extension number of the calling terminal device (caller extension number) 3303. It is.

The switching device transmits the extension incoming call information to the terminal device, and the terminal device responds to the extension incoming call completion information (FIG. 30) or the extension incoming call incomplete information (FIG. 31). After receiving either of the information, the call control is performed. This is because, in this case, the terminal device has the right to determine the call control (whether connection or regulation), and even if a plurality of switching devices receive the same extension incoming call to the same terminal device, Call control can be performed without contradiction.

§5. Handset selection control

Next, a description will be given of a procedure for selecting the left and right handsets when an outgoing call or incoming call is answered by the terminal device.

The terminal device for dealing telephone calls according to the present embodiment does not include a hook switch unlike a conventional telephone terminal. This is generally faster because it is faster to place the handset in the work area on the desk than to place it in a fixed position on the board of the terminal device. This is because it is suitable for those requiring operation.

Therefore, the outgoing call is made by the button “trunk 1” 8
-4-1 to 'trunk p'8-4-p, button' extension 1 '8-2-1 or' extension 2 '8-2-2, and button' autodial 1 '8-6-1 to' Occurs when one of the buttons on the auto dial q'8-6-q is pressed, and disconnection occurs when the button 'Left disconnection' 8-8-1 and 'Right disconnection' 8-8-2 are pressed. Occurs for the handset corresponding to each button.

Here, it is necessary to preliminarily define which of the left and right handsets is to be connected when a call or an incoming call is answered.

FIG. 34 and FIG. 35 are flowcharts for explaining a method of selecting a handset according to the present embodiment, which is performed in the fixed storage device 8-1 of the terminal device.
5 is programmed.

The method of this selection will be described below with reference to FIGS. 34 and 35.

First, the operator of the terminal device determines whether the button "trunk 1" 8-4-1 to "trunk p" 8-4-p, the button "extension 1" 8-2-1 or the "extension 2" 8-2. -2 and any one of the buttons 'autodial 1' 8-6-1 to 'autodial q' 8-6-q, the call control processor 8-14 of the terminal device detects this. (Step 3400), it is determined whether the operator is right-handed or left-handed with reference to the handset mode table shown in FIG. 10 (step 3401). Here, if the user is right-handed, steps 3402 to 3414 are sequentially executed. If the user is left-handed, steps 3415 to 3427 are sequentially executed. Since the flow is controlled symmetrically with respect to the left side, only the right-handed case will be described here.

Next, the call control processor 8-14
It is determined whether the single hand mode is the double hand mode by referring to the double hand button memory indicated by 0 (step 3402). In the single hand mode, only the left handset 8-1-1 can be used.
Referring to the left (L) handset memory shown in FIG.
It is determined whether the state is empty or busy (step 340).
3). Here, in the case of an empty state, the left handset is selected and determined (step 3404). In the case of a busy state, it is determined whether or not continuation is permitted by referring to the left hand continuation mode table shown in FIG. (Step 3405).
If the result of this determination is that the call is acceptable, the call currently being talked to by the left handset is automatically disconnected, and a new call or incoming call is answered (step 3406). Also,
If continuation is prohibited, the pressed button is invalidated (step 3407).

On the other hand, if the result of determination in step 3402 is that the mode is the double hand mode, similarly, first, it is determined whether the state is empty or busy by referring to the left (L) handset memory shown in FIG. (Step 3408). Here, in the case of the empty state, the left handset is selected and determined (step 3409). In the case of the state of the telephone call, the state of the empty or busy state is referred by referring to the right (R) handset memory shown in FIG. Is determined (step 3410). If the result of this determination is that the handset is empty, the right handset is selected and determined (step 3411).
Referring to the right hand continuous mode table shown in FIG.
It is determined whether continuation is permitted (step 3412).
If the result of this determination is that the call is acceptable, the call currently being talked to by the right handset is automatically disconnected, and a new right handset call or incoming call response is made (step 3413).
If continuation is prohibited, the pressed button is invalidated (step 3414).

The procedure for selecting the left and right handsets has been described above. In the following detailed description of the call control,
It is assumed that the left and right handsets are selected in this procedure.

§6. Call control

FIGS. 36 to 41 are diagrams showing a sequence for call control.

FIGS. 42 to 50 are flow charts for explaining the call control of the terminal device, and FIGS.
0 is a flowchart for explaining call control of the switching device.

Hereinafter, in this embodiment, a trunk call (FIG. 36), a trunk call (FIG. 37), and an extension call (FIG. 3)
8), extension incoming call (FIG. 39), automatic dial trunk call (FIG. 40), and automatic dial extension call (FIG. 41)
Will be described with reference to the flowcharts of FIGS. 42 to 50 and FIGS. 51 to 60, respectively.

6.1 Trunk Calling

In FIG. 36, the operator of the terminal device determines that the buttons “trunk 1” 8-4-1 to “trunk p” 8-4
Pressing any button of -p (FIGS. 36, 360)
1) In the call control processor 8-14 of the terminal device, FIG.
2 recognizes that an event has occurred (step 4201), and analyzes the contents (step 42).
02). As a result, when it is detected that any of the buttons 'trunk 1' 8-4-1 to 'trunk p' 8-4-p is pressed (FIGS. 36 and 3602), the trunk button detection shown in FIG. 43 is performed. Execute the process.

In FIG. 43, first, referring to the trunk button table shown in FIG. 7, the trunk accommodation position number 702 and the exchange device number 701 to be accommodated are extracted from the table corresponding to the pressed button (step 430).
1) Also, the state of the corresponding trunk is determined from the trunk memory shown in FIG. 18 or FIG. 19 (step 4).
302). As a result of this determination, when the route is empty, the empty route (43
2) A trunk calling process is executed.

First, in the procedure shown in FIGS. 34 and 35, the call information (FIG. 2) including the trunk accommodation position number and the selected handset information indicating that the call is a trunk call.
6) is edited (step 4303), and the call information (3603, FIG. 36) is transmitted to the switching device extracted from the trunk button table shown in FIG. 7 (step 4).
304). Next, the corresponding trunk area of the trunk memory shown in FIG. 18 or FIG. 19 is set to be reserved (step 4305), and the state of the left handset memory of FIG. 14 or the right handset memory of FIG. That is, the exchange device number during the call and the pressed trunk button number among the buttons 'trunk 1' 8-4-1 to 'trunk p' 8-4-p are set (step 43).
06). Further, based on the handset memory of FIG. 14 or FIG. 15, the communication path switch 8-30 is controlled to close the communication path (step 4307).

On the other hand, the switching apparatus detects that an event has occurred by the processing shown in FIG. 51 (step 5101), and analyzes the content (step 5101).
102), call information from the terminal device (3603 in FIG. 36)
36 and 3604, the calling information receiving process shown in FIGS. 54 and 55 is executed.

First, the switching device transmits call information (FIG. 36, 3
603) is determined (step 5).
401), it recognizes that the call is a trunk call, and executes a trunk call process by a trunk call route (54-1).

First, the state of the corresponding trunk is determined by the trunk memory shown in FIG. 25 (step 5402). If the trunk is not empty, a call cannot be made. A busy tone (BT tone) is transmitted to the accommodation position. If the trunk is vacant, the status information (FIG. 36, 3607) including the handset type, the trunk accommodation position number, and the calling terminal number and indicating that the call is a trunk call is edited (step 5403). The state information (FIG. 3
6, 3607) (step 5404). (In FIG. 36, the symbol indicated by the code ALL means that it is transmitted to all terminal devices.) Next, FIG.
Is set to the corresponding area of the trunk memory as shown in FIG. 24 (step 5405), and the area of the corresponding handset of the terminal memory shown in FIG. Step 5406). Subsequently, the communication path switch 1A or 1B is controlled to close the communication path between the terminal accommodation position corresponding to the handset and the trunk accommodation position (step 540).
7) Send a call order to the trunk to activate the line (step 5408).

By the above call control, the operator of the terminal device can hear the dial tone (DT tone) from the line with the handset.

All the terminal devices that have recognized that the status information (FIG. 36, 3607) has been received by the process of FIG. 42 execute the status information receiving process shown in FIG. 49 and FIG.

First, the received status information (360 in FIG. 36)
The state type included in 7) is determined (step 490).
1) Execute the trunk call processing of the trunk call route (49-1). It is determined whether the trunk is registered in the trunk button table shown in FIG. 7 (step 49).
02), if not registered, this state information is ignored. If registered, the terminal number included in the status information is compared with the own terminal number shown in FIG. 9 (step 4903). If they match, it is determined that the status information is the result of the call originated by the terminal device itself, and the handset type included in the status information is determined (step 49).
04), if it is a left handset, the buttons 'trunk 1' 8-4-1 to 'trunk p' 8-4- shown in FIG.
The corresponding lamp among the lamps 8-5-1 to 8-5-p corresponding to p is lit in green (step 4905),
If it is a right handset, it is lit orange (step 49)
06). As a result, the operator can recognize at a glance which of the left and right handsets is using which button to make a call.

On the other hand, when the terminal number included in the status information is another terminal number, the button “trunk 1” 8-4
-1 to 'trunk p' 8-4-p corresponding to ramp 8
The corresponding lamp out of -5-1 to 8-5-p is illuminated in red (step 4907) to display that another terminal is in use.

Next, the present route passes through the incoming call response described later, so that the incoming ringer is stopped (step 4908). If there is another incoming call button and the incoming call is ringing, the ringing is continued. Finally, the busy area is set in the corresponding area of the trunk memory shown in FIG. 18 or 19 (step 4909), and the process ends.

Next, the operator dials the necessary digits with the dial button group 8-10 shown in FIG. 4 while listening to the DT sound (FIGS. 36 and 3610). Then, the call control processor 8-14 of the terminal device identifies this by the processing of FIG. 42 (FIGS. 36 and 3611) and executes the dial button detection processing shown in FIG. In this dial button detection processing, dial button information including a handset type and a dial number is edited (step 4601), and FIG.
The dial button information (FIGS. 36 and 3612) is transmitted to the exchange device held in the handset memory (FIG. 14 or FIG. 15) determined according to the handset selection procedure shown in FIG. 4 and FIG. 35 (step 460).
2). The call control processor 8-14 transmits the dialed number to the numeric display controller 8-25,
The numbers are sequentially displayed on the numeric display 8-9 (step 460).
3).

On the other hand, when the exchange recognizes that the dial button information (FIGS. 36 and 3612) has been received according to FIG. 51 (FIGS. 36 and 3613), it executes the dial button information receiving process shown in FIG.

First, the connection type is determined with reference to the handset-compatible terminal memory shown in FIG. 24 (step 59).
01). Here, since the connection is a trunk connection, processing during the trunk connection is executed in the trunk connection route (59-1), and a dial order is sent to the trunk held in the terminal memory shown in FIG. 590
2). Thereafter, the trunk terminates the transmission of the necessary digits (FIG. 36, 3614), and if the other party answers, the telephone is in a call state (FIG. 36, 3615).

When the call is over, the operator must release the corresponding disconnect button of the handset for which the call is to be disconnected, that is, the button "left disconnect" 8-8-1 or "right disconnect" 8-8- in FIG.
2 is pressed (FIGS. 36 and 3616). Then, the call control processor 8-14 detects this according to FIG. 42 (FIGS. 36 and 3617), and executes a disconnection button detection process shown in FIG.

First, the cutting information (FIG. 36, 3618) including the handset type is edited (step 4701).
It is sent to the exchange device held in the handset memory shown in FIG. 14 or FIG. 15 (step 4702). Subsequently, the communication path switch 8-30 is controlled to open the communication path with the exchange that sent the disconnection information (step 4).
704), the corresponding area of the handset memory is set to be empty (step 4705), and the process ends.

On the other hand, when the switching device recognizes that the disconnection information (FIGS. 36, 3618) has been received according to FIG. 51 (FIGS. 36, 3619), it executes the disconnection information receiving process shown in FIG.

First, referring to the terminal memory shown in FIG. 24, the connection type of the corresponding handset is determined (step 6001). Here, since the trunk is connected, the route (60-1) during trunk connection is selected, and the processing during trunk connection is executed.

First, the trunk accommodation number stored in the terminal memory shown in FIG. 24 is extracted (step 600).
2) Edit the status information (FIG. 36, 3621) including the trunk accommodation position number and indicating that the trunk is empty (step 6003), and edit the edited status information (FIG. 3).
6, 3621) to all terminal devices (step 60).
04). Subsequently, the corresponding area of the trunk memory shown in FIG. 25 is set to empty (step 6005), and the communication path switches 1A and 1B are controlled to control the communication path between the terminal accommodation position corresponding to the handset and the trunk accommodation position. Is released (step 6006). Next, a disconnection order is sent to the trunk (step 6007), the line is released (FIGS. 36 and 3620), and the corresponding area of the terminal memory shown in FIG. 24 is set to empty (step 600).
8), end the process.

In addition, as shown in FIG. 42, all the terminal devices that have detected the reception of the status information (FIGS. 36 and 3621) from the switching device execute the status information receiving process shown in FIGS. 49 and 50.

First, the status type included in the received status information is determined (step 4901). Here, the trunk empty route (49-2) is selected, and the trunk empty process is executed.

In this trunk empty processing, first, it is determined whether or not the corresponding trunk is registered in the trunk button table shown in FIG. 7 (step 4910), and if not registered, this information is ignored. When registered,
The lamps of the corresponding trunk among the lamps 8-5-1 to 8-5-p shown in FIG. 4 are extinguished (step 491).
1), the corresponding area in the trunk memory shown in FIG. 18 or 19 is set to be empty (step 4912), and the process is terminated.

As described above, a series of call control is performed for a trunk call.

6.2 Trunk Incoming Call

In FIG. 37, when an incoming call is generated from the line to the switching device, and the switching device detects the incoming call according to FIG. 51 (FIG. 37, 3701), a trunk incoming call detection process shown in FIG. 52 is executed.

First, the switching device edits state information (FIG. 37, 3702) including the accommodation position of the incoming trunk and indicating that the incoming call is a trunk (step 520).
1), the status information (FIGS. 37, 3702) is sent to all the terminal devices (step 5202), and the corresponding area of the trunk memory shown in FIG. 25 is set to the incoming call (step 5203).

On the other hand, when the terminal device recognizes that the status information (FIGS. 37, 3702) has been received from the switching device according to FIG. 42 (FIGS. 37, 3703), it executes the status information receiving process shown in FIG. 49 and FIG. I do.

[0147] The terminal device first determines the state type included in the received state information (step 4901).
Here, the trunk incoming route (49-3) is selected, and the trunk incoming process is executed.

In this trunk incoming call processing, first, it is determined whether or not the corresponding trunk is registered in the trunk button table shown in FIG. 7 (step 4913). If not, this state information is ignored. When registered, the lamp 8-5 corresponding to the buttons "trunk 1" 8-4-1 to "trunk p" 8-4-p shown in FIG.
The corresponding lamp among 1 to 8-5-p is blinked in red (step 4914), and the ringer is sounded in accordance with the ring tone registered in the trunk button table of FIG. 7 (step 4915). Next, FIG. 18 or FIG.
The information indicating that the call is being received is set in the corresponding area of the trunk memory shown in FIG. 9 (step 4916), and the response from the operator is waited.

[0149] The operator of one of the terminal devices determines whether the lamp 8-
A button (button 'trunk 1' 8-4-) corresponding to any of the lamps blinking in red from 5-1 to 8-5-p
1 to any one of 'trunk p' 8-4-p) (FIG. 37, 3706), the call control processor 8-14
According to FIG. 42, it is detected that the call is answered (see FIG. 3).
7, 3707), and performs a trunk button detection process shown in FIG.

In this trunk button detection process, first,
Referring to the trunk button table shown in FIG. 7, the trunk accommodation position and the trunk storage position are determined from the table corresponding to the pressed button (any one of the buttons 'trunk 1' 8-4-1 to 'trunk p' 8-4-p). , And the number of the switching device accommodating the trunk is extracted (step 4301), and the state of the corresponding trunk is determined from the trunk memory shown in FIG. 18 or 19 based on the extracted number (step 4302).
Here, since the call is being received, the route during the call is received (43-3).
Is selected, and a trunk response process is executed.

In this trunk response process, first, response information (FIG. 37, 3708) including information on the selected handset type and indicating that a trunk response is to be performed is edited (step 4308), and from the trunk button table shown in FIG. The response information (3708 in FIG. 37) is sent to the switching device corresponding to the extracted switching device number (step 4309). Subsequently, in the handset memory shown in FIG. 14 or FIG. 15, the fact that the state has changed to "call", the number of the exchange device during the call and the pressed button number (buttons "trunk 1" 8-4-1 through "trunk p") '8-4-p) (step 4306), and based on the handset memory shown in FIG. 14 or 15, the speech path switch 8-30 is controlled to close the speech path (step 4306). Step 4307).

On the other hand, upon detecting that response information (FIG. 37, 3708) has been received from the terminal device (FIG. 37, 3709), the switching apparatus executes response information receiving processing shown in FIG. 58. In this response information receiving process,
First, a response type included in the received response information is determined (step 5801). Here, since it is a trunk response, the trunk response route (58-1) is selected, and the trunk response process is executed.

In this trunk response process, first, FIG.
The state of the corresponding trunk is determined from the trunk memory indicated by (step 5802).
Since the incoming call cannot be answered, a busy tone (BT tone) is transmitted to the terminal accommodation position corresponding to the handset (step 580).
9). If the trunk is receiving a call, it includes the handset type, the trunk accommodation position number, and the answering terminal number,
The status information (3712, 3712) indicating the trunk call is edited (Step 5803), and the status information (3712, 3712) is transmitted to all the terminal devices (Step 58).
04). Subsequently, the corresponding area of the trunk memory shown in FIG. 25 is set to a busy state (step 5805), and FIG.
In the area corresponding to the handset in the terminal memory shown in (5), a trunk connection and a trunk accommodation number are set (step 5806). Next, the communication path switches 1A and 1B are controlled to close the communication path between the terminal accommodating position corresponding to the handset and the trunk accommodating position (step 5807), and a response order is sent to the trunk (step 5808). ) Answer the line.

Further, based on FIG. 42, the terminal device which has detected that the status information (FIGS. 37, 3712) has been received from the switching device (FIGS. 37, 3713) performs the status information receiving process shown in FIGS. 49 and 50. Execute.

The terminal first determines the type of state included in the received state information (step 4901).
Here, the trunk call route (49-1) is selected, and the trunk call processing is executed.

In this trunk call processing, first, it is determined whether or not a trunk is registered in the trunk button table shown in FIG. 7 (step 4902). If not, this state information is ignored. If registered, the terminal number included in the status information is compared with the own terminal number shown in FIG. 9 (step 4903). If they match, it is known that the status information is the result of the response from the own terminal device, and the type of handset included in the status information is determined (step 4904). Lamps 8-5 corresponding to buttons 'trunk 1' 8-4-1 to 'trunk p' 8-4-p
The corresponding lamp among 1 to 8-5-p is turned on in green (step 4905), and is turned on in the case of the right handset in orange (step 4906). As a result, the operator can recognize at a glance which of the left and right handsets is using which button to make a call.

On the other hand, when the terminal number included in the status information is another terminal number, the button “trunk 1” 8-4
-1 to 'trunk p' 8-4-p corresponding to ramp 8
The corresponding lamp out of -5-1 to 8-5-p is illuminated in red (step 4907) to display that another terminal is in use. Next, a process of stopping the incoming ringer is performed (step 4908). If there is another incoming call button and the incoming call is ringing, the ringing is continued. Finally, the busy area is set in the corresponding area of the trunk memory shown in FIG. 18 or 19 (step 4909), and the process ends.

By the above-described call control, the operator of the terminal device that has performed the answering operation enters a talking state with the calling subscriber through the selected handset (FIGS. 37 and 3715).

When the call is completed, the operator selects the corresponding disconnect button of the handset to which the call is to be disconnected, that is, the button "left disconnect" 8-8-1 or "right disconnect" 8-8- in FIG.
The disconnection operation is performed by pressing any one of the two, but the subsequent processing is the same call control as the disconnection processing in the case of the trunk call shown in FIG.

6.3 Extension Calling

In FIG. 38, when the operator of the terminal device presses the button “ext. 1” 8-2-1 or “ext. 2” 8-2-2 (FIG. 38, 3801), the call control processor of the terminal device is pressed. Detects it according to FIG. 42 (FIGS. 38 and 3
802), an extension button detection process shown in FIG. 44 is executed.

First, the pressed button (button “ext. 1”
The extension state is determined by the extension memory (either the extension memory 1 shown in FIG. 16 or the extension memory 2 shown in FIG. 17) corresponding to the 8-2-1 or the 'extension 2' 8-2-2). (Step 4401). Here, when the state is empty, the empty route (44-2) is selected and the extension calling process is executed.

In this extension call processing, first, call information (FIG. 38, 3803) including the selected handset information and extension memory number and indicating that the call is an extension call is edited (step 4402). Referring to the calling exchange apparatus number table shown in FIG. 11, the exchange information registered in the calling exchange apparatus number table and the call information (FIGS.
803) (step 4403). Next, FIG.
6 or the extension memory corresponding to the pressed button (either the button 'extension 1' 8-2-1 or the 'extension 2' 8-2-2) shown in FIG. 17 is set during reservation (step 4404). Then, in the handset memory shown in FIG. 14 or FIG. 15, the fact that the state is "talking", the exchange device number during talking, and the extension button number during talking are set (step 4405). Next, the communication path switch 8-30 is controlled to close the communication path based on the handset memory shown in FIG. 14 or FIG. 15 (step 4406).

On the other hand, when the exchange detects that the call information (FIGS. 38, 3803) has been received from the terminal device (FIGS. 38, 3804), as shown in FIG.
The call information receiving process shown in FIG.

First, the call type included in the received call information is determined (step 5401). Here, since the call is an extension call, the extension call route (54-2) is selected.
Executes extension call processing.

In this extension call processing, first, status information (FIG. 38, 3806) including the handset type and the extension memory number and information indicating that the call is an extension call is edited (step 5410). Information (Fig. 38, 3
806) is sent to the terminal device that made the extension call (step 5411). Next, in the corresponding area of the extension memory shown in FIG. 22 or FIG.
2) Also, an extension connection and an extension memory number are set in the corresponding area of the terminal memory shown in FIG. 24 (step 5413). Subsequently, a dial tone (DT tone) is transmitted to the terminal accommodation position corresponding to the calling handset (step 5414), and the process ends.

When the terminal device detects that the status information (FIG. 38, 3806) has been received from the switching device (FIG. 38, 3807) according to FIG. 42, the terminal device shown in FIG.
The status information receiving process shown in FIG.

First, the status type included in the received status information is determined (step 4901). Here, since the call is an extension call, the extension call route (49-4) is selected, and the extension call process is executed.

In this extension call processing, first, the type of handset included in the received state information is determined (step 4917), and if the handset is a left handset, the button “extension 1” 8-2-1 or “extension” shown in FIG. The corresponding lamp of the lamp 8-3-1 or the lamp 8-3-2 corresponding to 2′8-2-2 is turned on in green (step 491).
8) If it is a right handset, it is lit orange (step 4919). As a result, the operator can recognize at a glance which extension button is used to make a call using either the left or right handset. Next, since this route also passes when an extension incoming call is answered, a process for stopping the incoming ringer is executed (step 4920).
But it has no meaning here. If there is another incoming call button and the incoming call is ringing, the ringing is continued. Finally, the corresponding area of the extension memory shown in FIG. 16 or FIG. 17 is set to a busy state (step 492).
1).

Next, the operator changes the dial button group 8-1 shown in FIG.
The necessary digits are dialed with 0 (3809 in FIG. 38). Then, the call control processor 8-14 of the terminal device identifies this by the processing in FIG. 42 (FIGS. 38 and 3810), and FIG.
6 is executed. In this dial button detection processing, dial button information including a handset type and a dial code (FIG. 38, 381)
1) is edited (step 4601), and FIG. 34 and FIG.
The dial button information (FIG. 38, FIG. 38) is stored in the exchange device stored in the handset memory (FIG. 14 or FIG. 15) determined according to the handset selection procedure shown in FIG.
3811) (step 4602). Further, the call control processor 8-14 transmits the dialed number to the numeric display controller 8-25, and the numeric display 8-
9 are sequentially displayed (step 4603).

On the other hand, if the exchange recognizes that the dial button information (FIGS. 38 and 3811) has been received according to FIG. 51 (FIGS. 38 and 3812), it executes the dial button information receiving process shown in FIG.

First, the connection type is determined with reference to the terminal memory corresponding to the handset shown in FIG. 24 (step 5).
901). In this case, since the connection is an extension connection, the process during the extension connection is executed by the extension connection route (59-2), and FIG.
The dial is stored in the terminal memory shown in FIG.
903). Thereafter, it is determined whether the reception of the dial button information has been completed (step 5904). If not completed, the dial button information is received again, and if completed, the terminal memory in the calling state shown in FIG. The state is set (step 5905). Then, the extension incoming call detection processing (FIG. 38, 3813) shown in FIG. 53 is executed. The extension incoming call detection processing will be described in detail in the next section.

Here, when the called terminal device answers, the communication state is established (FIG. 38, 3814).

When the call is finished, the operator sets the corresponding disconnection button of the handset to disconnect the call, that is, the button "left disconnection" 8-8 in FIG.
Press either -1 or 'Right cut' 8-8-2 (FIGS. 38, 3815). Then, the call control processor 8-14
Detects this according to FIG. 42 (FIGS. 38 and 381).
6), the disconnection button detection process shown in FIG. 47 is executed.

First, the cutting information (FIG. 38, 3817) including the handset type is edited (step 4701).
It is sent to the exchange device held in the handset memory shown in FIG. 14 or FIG. 15 (step 4702). Subsequently, the communication path switch 8-30 is controlled to open the communication path with the exchange that sent the disconnection information (step 4).
704), the corresponding area of the handset memory is set to be empty (step 4705), and the process ends.

On the other hand, when the exchange recognizes that the disconnection information (FIGS. 38, 3817) has been received according to FIG. 51 (FIGS. 38, 3818), it executes the disconnection information receiving process shown in FIG.

First, referring to the terminal memory shown in FIG. 24, the connection type of the corresponding handset is determined (step 6001). Here, since the connection is an extension, the route (60-2) during extension connection is selected, and the processing during extension connection is executed.

First, the extension memory number stored in the terminal memory shown in FIG. 24 is extracted (step 6009).
The status information indicating that the extension has become empty is edited (step 6010), and the edited status information (FIGS. 38 and 38)
20) is sent to the disconnected terminal device (step 601).
1). Subsequently, the communication path switches 1A and 1B are controlled,
The communication path between the terminal accommodation position corresponding to the handset and the partner accommodation position held in the extension memory shown in FIG. 22 or 23 is opened (step 6012), and a BT sound is transmitted to the partner accommodation position. (Step 6013). Subsequently, the corresponding area of the extension memory shown in FIG. 22 or FIG. 23 is set to be empty (step 6014).
Is set to empty (step 6015), and the process ends.

When the terminal device detects that the status information (FIGS. 38, 3820) has been received from the switching device (FIG. 38, 3821) according to FIG. 42, the terminal device shown in FIGS.
The status information receiving process shown in FIG.

First, the state type included in the received state information is determined (step 4901). Here, the extension empty route (49-5) is selected, and the extension empty process is executed.

In this extension empty processing, first, the button “extension 1” 8-2-2 shown in FIG.
Lamp 8-3 corresponding to 1 or 'extension 2' 8-2-2
-1 or the corresponding lamp among the lamps 8-3-2 is extinguished (step 4922), and the incoming ringer is stopped (step 4923). Then, the corresponding area in the extension memory shown in FIG. 16 or FIG. 17 is set to be empty (step 4924), and the processing is ended.

As described above, a series of call control is performed for an extension call.

6.4 Extension incoming call

In FIG. 39, when the exchange detects an extension incoming call according to FIG. 51 (FIG. 39, 3901), the exchange executes the extension incoming call detection processing shown in FIG.

In this extension incoming call detection processing, first, the extension incoming call information (FIG. 39, 3902) indicating the extension incoming call including the caller accommodation position number and the caller extension number is edited (step 3902). 5301), and transmits the extension incoming call information (FIG. 39, 3902) to the terminal apparatus that has received the extension.

On the other hand, when the terminal device detects that the extension incoming call information has been received from the switching device according to FIG. 42 (FIGS. 39 and 3903), the terminal device executes the extension incoming call detecting process shown in FIG.

In this extension incoming call detection processing, first, FIG.
Button "extension 1" 8-2 with reference to the extension memory 1 shown in FIG.
It is detected whether the extension corresponding to -1 is empty (step 48).
01), if it is empty, execute the processing after step 4803. If it is not empty, it refers to the extension memory 2 shown in FIG. 17 and detects whether the extension corresponding to the button 'extension 2' 8-2-2 is empty (step 4802). That is, the steps 4801 and 4802 are processes for detecting whether or not an extension is empty and capturing an empty extension memory. As a result, if there is no empty extension memory, the extension incoming call incomplete information (FIG. 39, 3909) including the caller accommodating position number and indicating that extension incoming cannot be performed is edited (step 4809), and the extension is used. Incoming call incomplete information (FIGS. 39, 390)
9) is sent to the exchange that sent the extension incoming call information (step 4810). When the extension memory can be captured, the extension call completion information (FIG. 39, 3906) including the number of the captured extension memory and the caller's accommodation position number and indicating that extension call is possible is provided. Edit (step 4803) and the extension incoming call completion information (FIG.
906) is sent to the exchange which sent the extension incoming call information (step 4804). Next, in the extension memory shown in FIG. 16 or FIG. 17, the fact that a call is being received is stored in the extension memory that has been captured, and the switching device number and the caller extension number that have detected the incoming call are stored (step 4805). Next, the button 'ext. 1' 8-2-1 or 'ext. 2' 8-
Lamp 8-3-1 or Lamp 8-3 corresponding to 2-2
The corresponding lamp of -2 is blinked in red (step 4806) to display the incoming call, and the incoming ringer 8-13 shown in FIG. 4 is sounded (step 4807) to display the incoming call audibly. Also, the caller's extension number is displayed on the numeric display 8-9 shown in FIG. 4 (step 4808), and the process ends.

On the other hand, when the switching device detects that the extension incoming call incomplete information is received from the terminal device according to FIG. 51 (FIGS. 39 and 3910), it executes the extension incoming call incomplete information receiving process shown in FIG. , A busy tone (BT
Sound) (step 5701).

When the switching device detects that the extension incoming call completion information has been received from the terminal device according to FIG. 51 (FIG. 39, 3907), the exchange executes the extension incoming call completion information receiving process shown in FIG.

In the extension incoming call completion information receiving process, first, it is determined that a call is being received in the corresponding extension memory area of the extension memory shown in FIG. 22 or 23, and the caller's accommodation position number Are set (step 5601), and FIG.
Extract the extension memory number of the caller held in the area corresponding to the accommodation position of the caller in the terminal memory shown in
A receiving side accommodation position number is set in a corresponding area of the extension memory shown in FIG. 22 or 23 (step 5602),
A ringing tone (RBT tone) is sent to the caller's accommodation position (step 5603). As a result, the extension memory used by each of the calling party and the called party sets the accommodating position of the other party and sets information necessary for performing subsequent call control. Become.

Next, the operator of the terminal device receiving an extension calls the lamp 8-3-1 or the lamp 8-- blinking red.
Press the button 'ext. 1' 8-2-1 or 'ext. 2' 8-2-2 corresponding to 3-2 (FIG. 39, 3912), and the call control processor 8-14 of the terminal device issues the signal according to FIG. Is detected (FIGS. 39 and 3913), an extension button detection process shown in FIG. 44 is executed.

In this extension button detection processing, first, FIG.
The state of the extension is determined by referring to the extension memory corresponding to the pressed button shown in FIG. 6 or FIG. 17 (step 4).
401). In this case, since the state is the incoming call, the incoming call route (44-3) is selected, and processing for responding to the incoming call is executed.

First, response information (FIGS. 39 and 3914) including the handset type selected by the procedures of FIG. 34 and FIG. 35 and indicating that it will respond to an extension incoming call is edited (step 4407), and FIG. 16 or FIG. The response information (FIG. 39, 3914) is sent to the exchange device held in the extension memory shown in FIG. Subsequently, in the handset memory shown in FIG. 14 or FIG. 15, the fact that the state is “talking”, the exchange device number during talking, and the extension button number during talking are set (step 4).
405) Then, the communication path switch 8-30 is controlled to close the communication path based on the handset memory shown in FIG. 14 or FIG. 15 (step 4406).

Next, upon detecting that response information has been received from the terminal device, as shown in FIG.
9, 3915), and executes the response information receiving process shown in FIG.

In the response information receiving process, first, the type of response included in the received response information is determined (step 5).
801). Here, since it is an extension response, the extension response route (58-2) is selected, and the extension response process is executed.

First, state information including an extension call, a handset type, and an extension memory number (FIG. 39,
3917) is edited (step 5810), and the status information (391, FIG.
7) is sent (step 5811). Next, the corresponding area of the extension memory shown in FIG. 22 or FIG. 23 is set to the busy state (step 5812), and it is determined that the extension is being connected to the corresponding handset area of the terminal memory shown in FIG. Set the memory number (step 581)
3). Next, the communication path switches 1A and 1B are controlled to close the communication path between the terminal accommodating position transmitting the response information and the caller accommodating position held in the corresponding extension memory (step 5814). . Then, the RBT sound to the caller accommodation position is stopped (step 5815), and the process ends.

When the terminal device detects that the status information (FIGS. 39, 3917) has been received (FIG. 39, 3917) according to FIG. 42, it executes the status information receiving process shown in FIG. 49 and FIG.

In the state information receiving process, first, the state type included in the state information is determined (step 490).
1). Here, since the call is an extension call, the extension call route (49-4) is selected, and the extension call processing is executed.

In this extension call processing, first, the type of handset included in the received state information is determined (step 4917). If the handset is a left handset, the button “extension 1” 8-2-1 or “extension” shown in FIG. The corresponding lamp of the lamp 8-3-1 or the lamp 8-3-2 corresponding to 2′8-2-2 is turned on in green (step 491).
8) If it is a right handset, it is lit orange (step 4919). As a result, the operator can recognize at a glance which extension button is used to make a call using either the left or right handset. The incoming ringer is stopped (step 4920). If there is another incoming call button and the incoming call is ringing, the ringing is continued. Next, the corresponding area of the extension memory shown in FIG. 16 or FIG. 17 is set to a busy state (step 492).
1), end the process.

The handset of the terminal device that has performed a response operation by the above call control can communicate with the calling terminal device (FIG. 39, 3920).

When the call is finished, the operator can use the corresponding disconnect button of the handset to disconnect the call, that is, the button “left disconnect” 8-8-1 or “right disconnect” 8-8- in FIG.
The disconnection operation is performed by pressing any one of the two, but the subsequent processing is the same call control as the disconnection processing in the case of the extension call shown in FIG.

6.5 Auto Dial Trunk Calling

In FIG. 40, when the operator of the terminal device presses any one of the buttons “auto dial 1” 8-6-1 to “auto dial q” 8-6-q (FIG. 40, 4001), the call control processor 8 of the terminal device
-14 detects this according to FIG. 42 (FIGS. 40 and 4).
002), an auto dial button detection process shown in FIG. 45 is executed.

In this automatic dial button detection processing,
First, the buttons "auto dial 1" 8-6-1 to "auto dial q" of the auto dial table shown in FIG.
The type of the auto dial is determined with reference to the area corresponding to the pressed button in 8-6-q (step 45).
01). Here, assuming that trunk auto-dial is set, an auto-dial trunk calling process for the trunk route (45-1) is executed.

In this automatic dial trunk calling process, first, the trap priority registered in the trunk button table shown in FIG. 7 is searched, and the trunk with the highest priority is captured (step 4502). Next, referring to an area of the trunk memory shown in FIG. 18 or 19 corresponding to the captured trunk, the state of the trunk is determined (step 4503).
Next, the trunk with the highest priority is selected, and the state of the trunk is similarly determined (steps 4504, 4502, and 45).
03). Here, if there is no empty trunk, the pressed button (any one of the buttons 'auto dial 1' 8-6-1 to 'auto dial q' 8-6-q)
Shall be invalid. If the trunk with the highest priority in the empty state is determined to be captured, the dial number and the handset type extracted from the information stored in the area corresponding to the pressed button in the auto-dial table shown in FIG. , And the trunk accommodation position number, and the call information (FIG. 40, 4
005) is edited (step 4505), and its call information (4005, FIG. 40) is sent to the exchange registered in the trunk button table shown in FIG. 7 (step 4506). Next, the corresponding area of the trunk memory shown in FIG. 18 or FIG. 19 is set during reservation (step 4).
507), setting that the state is busy, the exchange device number during the call, the trunk button number during the call, and the auto-dial number during the call (pressed) in the corresponding area of the handset memory shown in FIG. 14 or FIG. (Step 4
508). Next, the button 'auto dial 1' 8-6-
The corresponding lamp among the lamps 8-7-1 to 8-7-q corresponding to 1 to 'auto dial q' 8-6-q is turned on in a color (green or orange) corresponding to the handset type (step). 4509). FIG. 14 or FIG.
The communication path switch 8-30 is controlled based on the handset memory shown in FIG. 5 to close the communication path (step 45).
10).

Next, the switching device detects that it has received the calling information from the terminal device according to FIG. 51 (FIG. 4).
0, 4006), and executes the call information reception processing shown in FIGS. 54 and 55.

In this call information receiving process, first, the call type included in the received call information is determined (step 5401). Here, since the call is an auto-dial trunk call, the auto-dial trunk call route (54-3)
Is selected, and an automatic dialing process is executed.

First, the status of the corresponding trunk is determined by the trunk memory shown in FIG. 25 (step 5416). If the trunk is not empty, no call can be made. A busy tone (BT tone) is transmitted to the accommodation position (step 5424).
If the trunk is empty, edit the state information indicating the trunk call, including the handset type, the trunk accommodation position number, and the calling terminal number (step 5).
417), the state information for all terminal devices (FIG. 40,
4010) is sent (step 5418). Next, the corresponding area of the trunk memory shown in FIG. 25 is set to the busy state (step 5419), and the trunk is being connected to the corresponding handset area of the terminal memory shown in FIG. A number is set (step 5420). Subsequently, the communication path switch 1A or 1B
To close a communication path between the terminal accommodation position corresponding to the handset and the trunk accommodation position (step 542).
1) A call order is sent to the trunk to activate the line (step 5422), and then a dial order is sent to the trunk (step 5423).

When the terminal device recognizes that the status information (FIGS. 40 and 4010) has been received by the process of FIG. 42 (FIGS. 40 and 4011), it executes the status information receiving process shown in FIGS. 49 and 50. I do.

First, the received state information (FIG. 40, 401)
(0) is determined (step 490).
1) Execute the trunk call processing of the trunk call route (49-1). It is determined whether the trunk is registered in the trunk button table shown in FIG. 7 (step 49).
02), if not registered, this state information is ignored. If registered, the terminal number included in the status information is compared with the own terminal number shown in FIG. 9 (step 4903). If they match, it is determined that the status information is the result of the call originated by the terminal device itself, and the handset type included in the status information is determined (step 49).
04), if it is a left handset, the buttons 'trunk 1' 8-4-1 to 'trunk p' 8-4- shown in FIG.
The corresponding lamp among the lamps 8-5-1 to 8-5-p corresponding to p is lit in green (step 4905),
If it is a right handset, it is lit orange (step 49)
06). As a result, the operator can recognize at a glance which of the left and right handsets is using which button to make a call.

On the other hand, when the terminal number included in the status information is another terminal number, the button “trunk 1” 8-4
-1 to 'trunk p' 8-4-p corresponding to ramp 8
The corresponding lamp out of -5-1 to 8-5-p is illuminated in red (step 4907) to display that another terminal is in use. Next, a process of stopping the incoming ringer is performed (step 4908) (this has no meaning here). Finally, the busy area is set in the corresponding area of the trunk memory shown in FIG. 18 or 19 (step 490).
9), end the processing.

Thereafter, when the called party answers, a call is made (4013 in FIG. 40).

Note that the cutting process in FIG.
The difference between the process of disconnecting the trunk call shown in FIG. 36 and the process is that when the terminal device detects the disconnection, the buttons "auto dial 1" 8-6-1 to "auto dial q" 8- "
Processing to extinguish a lamp among the lamps 8-7-1 to 8-7-q corresponding to 6-q (401 in FIG. 40)
6), the description is omitted.

As described above, a series of call control for an auto dial trunk call is performed.

6.6 Auto Dial Extension Calling

In FIG. 41, when the operator of the terminal device presses any one of the buttons “auto dial 1” 8-6-1 to “auto dial q” 8-6-q (FIG. 41, 4101), the call control processor 8 of the terminal device
-14 detects this according to FIG. 42 (FIGS. 40 and 4).
102), an auto dial button detection process shown in FIG. 45 is executed.

In the automatic dial button detection processing,
First, the buttons "auto dial 1" 8-6-1 to "auto dial q" of the auto dial table shown in FIG.
The type of the auto dial is determined with reference to the area corresponding to the pressed button in 8-6-q (step 45).
01). Here, assuming that the extension automatic dial has been set, the automatic dial extension calling process for the extension route (45-2) is executed.

In this automatic dial extension calling process, first, it is determined whether or not the extension is empty by referring to the extension memory 1 shown in FIG. 16 (step 4511). Execute. If it is not empty, it is determined whether the extension is empty by referring to the extension memory 2 shown in FIG. 17 (step 4512).
The processing after step 4513 is executed. That is, as a result of judging the state of the extension memory in steps 4511 and 4512, if both are not empty, the buttons "auto dial 1" 8-6-1 to "auto dial q" 8-6-q Invalidates the pressed button. If there is an empty extension memory, the extension memory is captured, and the dial number and handset type extracted from the information stored in the area corresponding to the pressed button in the auto dial table shown in FIG. , And the extension memory type, and edits the call information (FIGS. 41 and 4105) indicating that the call is an auto-dial extension call (step 4513) and is registered in the call switching device number table shown in FIG. The calling information (FIGS. 41 and 4105) is sent to the exchange (step 4514). Next, the corresponding area of the extension memory shown in FIG. 16 or FIG. 17 is set to be reserved (step 4515), and the state that the corresponding area of the handset memory shown in FIG. 14 or FIG. The middle exchange device number, the extension button number during the call, and the auto dial number during the call (pressed) are set (step 4516). Next, the buttons "auto dial 1" 8-6-1 to "auto dial q"
Lamps 8-7-1 to 8-7-q corresponding to 8-6-q
Is turned on in a color (green or orange) corresponding to the handset type (step 4509).
Then, the communication path switch 8-30 is controlled based on the handset memory shown in FIG. 14 or 15 to close the communication path (step 4510).

On the other hand, if the exchange detects that the call information (FIGS. 41 and 4105) has been received from the terminal device (FIGS. 41 and 4106) according to FIG. 51, the exchange shown in FIGS.
The call information receiving process shown in FIG.

First, the call type included in the received call information is determined (step 5401). Here, since it is an automatic dial extension call, the automatic dial extension calling route (54-4) is selected, and the automatic dial extension calling process is executed.

In this automatic dial extension calling process, first, state information (FIGS. 41 and 41) including a handset type, an extension memory number, and information indicating that the call is an extension call.
08) is edited (step 5425), and its status information (FIGS. 41 and 4108) is transmitted to the terminal device that has originated the automatic dial extension call (step 5426).
Next, in the corresponding area of the extension memory shown in FIG. 22 or FIG. 23, the fact that the state is “talking” and the handset type are set (step 5427), and the corresponding area of the terminal memory shown in FIG. An extension connection and an extension memory number are set (step 5428). continue,
The terminal accommodation position corresponding to the called handset is set in a standby state (step 5429), and the already described extension incoming call detection processing shown in FIG. 53 is executed (step 5430).

When the terminal device detects that the status information (FIGS. 41 and 4108) has been received from the switching device in FIG. 42, it executes the status information receiving process shown in FIGS. 49 and 50.

First, the state type included in the received state information is determined (step 4901). Here, since the call is an extension call, the extension call route (49-4) is selected, and the extension call process is executed.

In this extension call processing, first, the type of the handset included in the received state information is determined (step 4917). If the handset is a left handset, the button “extension 1” 8-2-1 or “extension” shown in FIG. The corresponding lamp of the lamp 8-3-1 or the lamp 8-3-2 corresponding to 2′8-2-2 is turned on in green (step 491).
8) If it is a right handset, it is lit orange (step 4919). As a result, the operator can recognize at a glance which extension button is used to make a call using either the left or right handset. Next, a process of stopping the incoming ringer is executed (step 4920) (this has no meaning here). Finally, FIG. 16 or FIG.
The corresponding area of the extension memory shown in FIG. 7 is set to a busy state (step 4921).

In this state, when the called party answers the incoming call,
A call state (FIGS. 41, 4111) is established.

The cutting process in FIG.
The difference between the extension call disconnection process shown in FIG.
When the terminal device detects the disconnection, the buttons' autodial 1 '8-6-1 to' autodial q'8-6-
Process of extinguishing a lamp among lamps 8-7-1 to 8-7-q corresponding to q (FIGS. 41, 4114)
Therefore, the description is omitted.

As described above, a series of call controls for an automatic dial extension call are performed.

§7. Conclusion

The embodiment of the telephone exchange system according to the present invention has been described above.
It is not limited to the present embodiment. For example, the terminal device may have three or more handsets, or may have three or more extension call control memories. Also, there may be three or more sets of switching devices to be connected. Regardless of the system configuration, according to the present invention, it is clear from the description so far that a plurality of switching devices function as if they were one large-scale switching device from the viewpoint of the terminal device.

Further, in the present embodiment, as the call control, a trunk call, a trunk call, an extension call, an extension call, an autodial trunk call, and an autodial extension call have been described. , Transfer, interrupt,
And for other typical call control such as conferences, by developing the tables and temporary memory configuration disclosed in the present embodiment, the configuration of the call control message, the call control sequence, and the concept of individual call control, It is clear that it can be easily realized.

[0231]

According to the present invention, a part of the call control is shared on the terminal device side, so that the load on the switching device is reduced and the line processing capacity is improved in proportion to the number of connected switching devices. There is an effect that can be.

Further, for example, when a telephone switching system is configured using N switching devices, even if one switching device goes down, it can be reduced by 1 / N from the viewpoint of the whole system. There is also an effect that the performance is improved.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration example of a telephone exchange system according to the present invention.

FIG. 2 is a diagram showing a configuration example of a telephone exchange system according to the present invention.

FIG. 3 is a diagram showing a configuration example of a telephone exchange system according to the present invention.

FIG. 4 is a diagram illustrating a board configuration of a terminal device according to the present invention.

FIG. 5 is a block diagram showing a hardware configuration of a terminal device according to the present invention.

FIG. 6 is a block diagram showing a dedicated extension circuit of the exchange according to the present invention.

FIG. 7 is a diagram showing a table (trunk button table) of the terminal device.

FIG. 8 is a diagram showing a table (auto dial button table) of the terminal device.

FIG. 9 is a diagram showing a table (terminal number table) of the terminal device.

FIG. 10 is a diagram showing a table (handset mode table) of the terminal device.

FIG. 11 is a diagram showing a table (calling exchange device number table) of the terminal device.

FIG. 12 is a diagram showing a table (left hand continuous mode table) of the terminal device.

FIG. 13 is a diagram illustrating a table (right hand continuous mode table) included in the terminal device.

FIG. 14 is a diagram showing a temporary memory (left (L) handset memory) of the terminal device.

FIG. 15 is a diagram showing a temporary memory (right (R) handset memory) of the terminal device.

FIG. 16 is a diagram showing a temporary memory (extension memory 1) of the terminal device.

FIG. 17 is a diagram showing a temporary memory (extension memory 2) of the terminal device.

FIG. 18 is a diagram showing a temporary memory (exchange device A-accommodating trunk memory) of the terminal device.

FIG. 19 is a diagram showing a temporary memory (exchange device B accommodating trunk memory) of the terminal device.

FIG. 20 is a diagram showing a temporary memory (double hand button memory) of the terminal device.

FIG. 21 is a diagram showing a table (terminal number table) of the switching device.

FIG. 22 is a diagram showing a temporary memory (extension memory 1) of the switching device.

FIG. 23 is a diagram showing a temporary memory (extension memory 2) of the exchange device.

FIG. 24 is a temporary memory (terminal memory) of the switching device.
FIG.

FIG. 25 is a diagram showing a temporary memory (trunk memory) of the terminal device.

FIG. 26 is a diagram showing a call control message (calling information) from the terminal device to the switching device.

FIG. 27 is a diagram showing a call control message (response information) from the terminal device to the exchange device.

FIG. 28 is a diagram showing a call control message (dial button information) from the terminal device to the exchange device.

FIG. 29 is a diagram showing a call control message (disconnection information) from the terminal device to the exchange device.

FIG. 30 is a diagram showing a call control message (extension incoming call completion information) from the terminal device to the exchange device.

FIG. 31 is a diagram showing a call control message (extension call incompletion information) from the terminal device to the exchange device.

FIG. 32 is a diagram showing a call control message (state information) from the switching device to the terminal device.

FIG. 33 is a diagram showing a call control message (extension incoming call information) from the switching device to the terminal device.

FIG. 34 is a flowchart (1/2) showing a procedure for selecting a handset.

FIG. 35 is a flowchart (2/2) showing a procedure for selecting a handset.

FIG. 36 is a diagram showing a call control sequence when a trunk call is made.

FIG. 37 is a diagram showing a call control sequence when a trunk call is received.

FIG. 38 is a diagram showing a call control sequence at the time of calling an extension.

FIG. 39 is a diagram showing a call control sequence at the time of an extension incoming call.

FIG. 40 is a diagram showing a call control sequence at the time of calling an automatic dial trunk.

FIG. 41 is a diagram showing a call control sequence when an automatic dial extension is called.

FIG. 42 is a flowchart showing call control (event detection processing) of the terminal device.

FIG. 43 is a flowchart showing call control (trunk button detection processing) of the terminal device.

FIG. 44 is a flowchart showing call control (extension button detection processing) of the terminal device.

FIG. 45 is a flowchart showing call control (auto dial button detection processing) of the terminal device.

FIG. 46 is a flowchart showing call control (dial button detection processing) of the terminal device.

FIG. 47 is a flowchart showing call control (disconnection button detection processing) of the terminal device.

FIG. 48: Call control of a terminal device (extension incoming call information reception processing)
It is a flowchart which shows.

FIG. 49 is a diagram illustrating call control (status information reception processing (1/1) of the terminal device.
It is a flowchart which shows 2)).

FIG. 50 is a diagram illustrating call control (status information reception processing (2 /
It is a flowchart which shows 2)).

FIG. 51 is a flowchart showing call control (event detection processing) of the switching apparatus.

FIG. 52: Call control of switching equipment (trunk incoming call detection processing)
It is a flowchart which shows.

FIG. 53 is a flowchart showing call control (extension incoming call detection processing) of the switching apparatus.

FIG. 54 is a diagram showing call control of a switching device (call information reception processing (1 /
It is a flowchart which shows 2)).

FIG. 55: Call control of the switching equipment (call information reception processing (2 /
It is a flowchart which shows 2)).

FIG. 56 is a flowchart showing call control (extension incoming call completion information reception processing) of the switching apparatus.

FIG. 57 is a flowchart showing call control (extension incoming call incompletion information reception processing) of the switching apparatus.

FIG. 58 is a flowchart showing call control (response information receiving processing) of the switching apparatus.

FIG. 59 is a flowchart showing call control (dial button information reception processing) of the switching apparatus.

FIG. 60 is a flowchart showing call control (disconnection information reception processing) of the switching device.

FIG. 61 is a diagram showing a configuration example of a conventional telephone exchange system.

[Explanation of symbols]

1A, 1B: communication path switch, 2A, 2B: conventional telephone terminal, 3A, 3B: extension circuit, 4A, 4B: trunk, 5A, 5B: central control device, 6A, 6B: storage device, 7A, 7B ... Control system bus, 8 terminal device, 9A, 9
B: dedicated extension circuit.

Claims (34)

[Claims] 1. A telephone exchange system comprising: a plurality of communication terminal devices; and a switching device which is connected directly to the communication terminal device and performs a switching operation. A communication path switch for performing an exchange connection according to the above, detection means for detecting a change in the call state, and when the detection means detects a change in the call state, generates state information including a state type indicating the contents of the call state. State information generating means, and transmitting means for transmitting the state information generated by the state information generating means to at least one of the plurality of communication terminal devices via the line, At least one handset comprising a transmitter and a receiver, a communication means for connecting the handset to the line and setting a communication path, and using the handset At least one call request
Two call request means, storage means for storing call state information relating to the call state of the switching device, receiving means for receiving the state information from the switching device via the line, and Storage control means for rewriting the call state information corresponding to the call request means in the storage means in accordance with the state type in the state information; and when the call request means is operated, the storage control means is stored in the storage means. With reference to the call state information, it is determined whether the operation of the call request unit is a call operation or a call answering operation. If the result of the determination is a call operation, call information indicating a call operation is transmitted. Calling control means for making and requesting the switching device to perform a connection operation of a communication path; and when the result of the determination is an incoming call response operation, creating response information indicating a response operation, And a response control unit which performs a request for speech path connection operation to location, whereby, telephone switching system for a communication connection operates in conjunction the plurality of communication terminals and said switching device. 2. The telephone exchange system according to claim 1, wherein said line comprises a channel for communication and a channel for control, and said transmitting means transmits said status information via said control channel. 3. The telephone exchange system according to claim 1, wherein said transmitting means transmits said status information to said plurality of communication terminal devices all at once. 4. The telephone switching system according to claim 2, wherein said communication channel of said line is a plurality of channels. 5. A digital line comprising two communication channels and one control channel.
Phone exchange system as described. 6. Each of the communication terminal devices includes a plurality of handsets, and each of the plurality of handsets is connected to each of the plurality of communication terminals by selecting one of the plurality of communication channels. The telephone exchange system according to claim 4, further comprising a switch for performing the operation. 7. The state information further includes change position information indicating a place where the call state has changed.
Phone exchange system as described. 8. The status type of the status information includes an empty status,
2. The telephone exchange system according to claim 1, wherein the telephone exchange system indicates one of a busy state and an incoming call state. 9. Each of the communication terminal devices further includes: a ringing tone sending unit that sends a ringing tone; and a unit that, when the receiving unit receives the status information, analyzes the content of the status type of the status information. 9. The telephone exchange system according to claim 8, further comprising: means for driving said ringing tone transmitting means when said status type is an incoming call state, and for transmitting a ringing tone. 10. When the call operation is performed by the call request unit, the control device refers to the call state information stored in the storage unit, and based on the call state information, issues a call request. 2. The telephone exchange system according to claim 1, wherein whether or not the call is exchanged is determined. 11. A telephone exchange system comprising: a plurality of communication terminal devices; and a switching device which connects them directly via a line and performs a switching operation. A communication path switch for performing an exchange connection according to the above, detection means for detecting a change in the call state, and when the detection means detects a change in the call state, generates state information including a state type indicating the contents of the call state. State information generating means, and transmitting means for transmitting the state information generated by the state information generating means to at least one of the plurality of communication terminal devices via the line, Each comprising at least one handset comprising a transmitter and a receiver, connecting means for connecting the handset to the line and setting a communication path, and using the handset At least one request for an existing call
Three call request means, state display means for visually displaying a call state corresponding to the call request means of the exchange device, storage means for storing call state information relating to the call state of the exchange device, and Receiving means for receiving the status information via the line, when the receiving means receives the status information, determines whether or not the status information corresponds to the call requesting means; Analyzing the state type in the state information, visually displaying the state display means in a form corresponding to the state type, and according to the state type, the call state corresponding to the call request means in the storage means. A telephone exchange system comprising: control means for rewriting information, whereby the plurality of communication terminal devices and the exchange device perform a communication connection operation in conjunction with each other. 12. The telephone exchange system according to claim 11, wherein said line comprises a channel for communication and a channel for control, and said transmitting means transmits said status information via said control channel. 13. The transmission unit according to claim 11, wherein the transmission unit transmits the status information to the plurality of communication terminal devices simultaneously.
Or the telephone exchange system according to 12. 14. The state information further includes change position information indicating a location where the call state has changed, and the control unit transmits the state information to the call request unit based on the change position information. 12. The telephone exchange system according to claim 11, wherein it is determined whether or not the telephone exchange is supported. 15. The telephone exchange system according to claim 11, wherein the status type of the status information indicates one of an idle status, a busy status, and a receiving status. 16. Each of the communication terminal devices further stores a ringing tone transmitting means for transmitting a ringing tone, and call control information for determining whether or not to transmit a ringing tone when receiving a call corresponding to the call requesting means. A call control information storage unit that performs, when the receiving unit receives the state information, a unit that analyzes the content of the status type of the status information; and when the status type is the incoming call status, stores the call control information. 16. The device according to claim 15, further comprising: a unit for determining whether or not the ringing tone is to be transmitted, and a unit for driving the ringing tone transmitting unit and transmitting a ringing tone when the ringing tone is required. Telephone exchange system. 17. A telephone exchange system comprising: a plurality of communication terminal devices; and a switching device which connects them directly via a line and performs a switching operation. A communication path switch for performing an exchange connection according to the above, detection means for detecting a change in the call state, and when the detection means detects a change in the call state, generates state information including a state type indicating the contents of the call state. State information generating means, and transmitting means for transmitting the state information generated by the state information generating means to at least one of the plurality of communication terminal devices via the line, At least one handset comprising a transmitter and a receiver, a communication means for connecting the handset to the line and setting a communication path, and a state of the own communication terminal device Storage means for storing own terminal state information relating to the receiving apparatus; receiving means for receiving the state information from the switching device via the line; and storing means according to the state type in the state information received by the receiving means. Storage control means for rewriting the own terminal status information in the at least one of the at least one requesting a call using the handset
Two call request means, and when the call request means is operated, by referring to the own terminal state information stored in the storage means, whether the operation of the call request means is a call operation or a call response operation Call control means for making call information indicating that the call operation is a call operation when the result of the determination is a call operation, and requesting the switching device to perform a connection operation of a communication path; And response control means for generating response information indicating that the response operation is a response operation, and requesting the switching device to perform a connection operation of a communication path, whereby the plurality of communication terminal devices are provided. A telephone exchange system in which a communication connection operation is performed in cooperation with the exchange device. 18. The telephone exchange system according to claim 17, wherein said line comprises a channel for communication and a channel for control, and said transmitting means transmits said status information via said control channel. 19. The telephone exchange system according to claim 17, wherein said transmitting means transmits said status information to a specific communication terminal device. 20. The telephone exchange system according to claim 18, wherein said communication channel of said line is a plurality of channels. 21. The telephone switching system according to claim 20, wherein said line is a digital line comprising two communication channels and one control channel. 22. Each of the communication terminal devices includes a plurality of handsets, and each of the plurality of handsets is connected to each of the communication terminal devices by selecting one of the plurality of communication channels. 22. The telephone exchange system according to claim 20, further comprising a switch that performs switching. 23. The telephone exchange system according to claim 17, wherein the state information includes change position information indicating a place where a call state has changed. 24. The telephone exchange system according to claim 17, wherein the status type of the status information indicates one of an idle status and a busy status. 25. The telephone exchange system according to claim 17, wherein said own terminal state information includes handset information relating to a use state of said handset. 26. The telephone exchange system according to claim 25, wherein each of said communication terminal devices includes a plurality of handsets, and wherein said handset information is provided for each of said plurality of handsets. 27. Each of the communication terminal devices, further comprising: a ringing tone transmitting unit for transmitting a ringing tone; and a unit for analyzing, when the receiving unit receives the state information, a state type content of the state information. 25. The telephone exchange system according to claim 24, further comprising: means for driving said ringing tone transmitting means when said status type is an incoming call state, and for transmitting a ringing tone. 28. When the calling operation is performed by the call requesting means, the control device refers to the own terminal state information stored in the storage means and makes a call based on the own terminal state information. 18. The telephone exchange system according to claim 17, wherein it is determined whether the call is permitted. 29. A switching device accommodating a plurality of trunks and a plurality of terminal devices directly connected to the switching device by a line and performing communication operations in conjunction with call connection control of the connected switching device. A telephone exchange system, comprising: transmitting, via the line, status information indicating a status change of the trunk to all of the terminal devices when a change occurs in the status of the trunk in the switching device. A trunk state storage means for storing the state of the trunk in each of the terminal devices; upon receiving the state information, a trunk state stored in the trunk state information storage means based on the state information. Rewriting means for rewriting, at the time of a call connection via one of the trunks, a call or call based on a trunk state stored in the trunk information storage means. Is a telephone exchange system comprising control means for performing outgoing / incoming call control including determination of whether or not an incoming call response is possible. 30. Each of the terminal devices further stores a trunk button for inputting a command relating to the operation of the trunk, and information of each trunk accommodated in the switching device in association with the trunk button. And a trunk button information storage unit. When the control unit detects a call command by the trunk button, the control unit reads information corresponding to the trunk related to the call command from the trunk state storage unit, and 30. The telephone switching system according to claim 29, wherein a trunk to be called is detected based on the information, and whether or not a call related to the trunk to be called can be made is determined. 31. The trunk button information storage means stores accommodation position information of each trunk, and the control means sets the call target of the call target based on the information stored in the trunk button information storage means. If it is determined that the trunk is capable of making a call, call information including accommodation position information on the call target trunk stored in the trunk state storage means is generated, and the generated call information is transmitted to the switching device. 31. The telephone exchange system according to claim 30, wherein the telephone exchange system sends the call to a telephone exchange. 32. Each of the terminal devices further includes: a trunk button for inputting a command relating to the operation of the trunk; trunk state display means for displaying the trunk button in association with the trunk button; Trunk button information storage means for storing information on each trunk in association with the trunk button, wherein the control means, when detecting status information indicating an incoming trunk call from the exchange, stores the trunk button information. 30. The telephone exchange system according to claim 29, wherein a trunk button corresponding to the trunk to be called is recognized based on the information stored in the means, and an incoming call is displayed on the trunk state display means corresponding to the recognized trunk button. 33. The trunk button information storage means stores, for each trunk button, information indicating the necessity of transmitting a ring tone and information of a ring tone type to be transmitted when a trunk call is received. When detecting state information indicating a trunk call from the switching device, recognizes a ring tone type corresponding to the incoming call target trunk stored in the trunk button information storage means, and based on the ring tone type, 33. The telephone exchange system according to claim 32, wherein a ring tone is transmitted. 34. An exchange device accommodating a plurality of trunks, and a plurality of terminal devices directly connected to the exchange device by a line and performing communication operations in conjunction with call connection control of the connected exchange device. A telephone exchange system having: an incoming call information detecting means for detecting an incoming call to the trunk; and an information for identifying the trunk when the incoming call information is detected by the incoming call information detecting means. Sending means for sending incoming call information indicating an incoming call to the trunk to all of the terminal devices via the line, wherein each of the terminal devices has information relating to a preset unique incoming call process. Storage means for receiving the incoming call information; and, when the receiving means detects the incoming call information, a ratio between the information specifying the trunk and the information stored in the storage means is compared. A determination means for autonomously determining whether or not the incoming call is to be processed; and a display control means for executing a predetermined incoming call display process when the determining means determines that the incoming call is to be processed. Telephone exchange system.