JPS594293A - Electronic exchange control system - Google Patents

Abstract

PURPOSE:To improve the function of the entire system and to attain the additional service, by providing a microprocessor system to at least a part of device of a subscriber device, a trunk device and a wire source device, for sharing the function of the central processing system. CONSTITUTION:Subscriber line devices 2, 2', trunk devices 4, 4' and a sound source device 5 are provided respectively with a microprocessor system, and the burden of the function of a CPU6 is shared with the microprocessor system. The microprocessor 23 and a memory 24 are provided to a telephone and network interface 21 connected to a telephone set 3 and a voice signal line 10 of the subscriber circuit and a signal port interface 22 connected to control signal paths 11, 12.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to an electronic switching control system for, for example, a private branch exchange (PBX).

(2) Prior Art and Problems For example, in a private branch exchange system, a non-blocking one-stage time division network is provided. This time-division network is connected to telephones in the premises via subscriber circuit equipment, and is also connected to other stations via trunk equipment.In addition, the time-division network includes a sound source device that generates various sound source signals. is connected. Control of such systems has traditionally been controlled by a single central processing unit (c
pu), the functional load on this CPU is heavy, resulting in problems such as the inability to add services.

(3) Purpose of the Invention The purpose of the present invention is to provide a microprocessor system in some or all devices such as subscriber circuit devices, trunk devices, and sound source devices, and to share the functions of the CPU with these microprocessor systems. Based on this concept, the purpose is to fully improve the functionality of the entire system, thus making it possible to add services, etc., and solving all of the problems with the conventional system mentioned above.

(4) Structure of the Invention In order to achieve the above-mentioned object, the present invention provides a time-division network, a plurality of subscriber circuit devices connecting the time-division network and telephone sets, and a connection between the time-division network and other stations. In an electronic switching control system comprising a plurality of connected trunk devices, a sound source device connected to the time division network, and a central processing system that controls the entire system, each of the subscriber circuit devices, each of the trunk devices and the An electronic exchange control system is provided, characterized in that at least some of the sound source devices are provided with a microprocessor system, and each microprocessor system is made to share the functions of the central processing system.

(5) Examples of the invention Embodiment F of the present invention will be described below with reference to the drawings.

FIG. 1 is a block circuit diagram showing an embodiment of an electronic switching control system according to the present invention. In FIG. 1, 1 is a non-blocking one-stage time division network with the same number of inputs and outputs, 2.2' is a subscriber line it connecting telephone 3.3' and network 1, 4, 4' is a trunk device that connects the other station (not shown) and network 1; 5 is a dial tone (DT), a ringing tone (
RT).

A sound source device that generates a ringing pack tone (RBT), a busy tone (BT), etc. 6 is a CPU that controls the entire system, 7 is a read-only memory that stores program data and data essential for the operation of the CPU 6.
ROM) and random access memory (RAM)'e
8 is a network interface device for interfacing between the network 1 and the CPU 7, and 9 is a processor bus.

Further, 10 is an audio signal path for transmitting an audio signal;
11 and 12 are control signal paths for transmitting all control signals. In this case, control signal path 11 is permanently connected to network interface device 8, whereas control signal path 12 is connected to interface 1. Each device 2.2', 4
．． 4' can be arbitrarily connected and disconnected.

In the present invention, each subscriber line device 2.2', trunk device 4.4', and sound source device 5 are each provided with a microprocessor system, and these microprocessor systems share the functional burden of the CPU 6. There is.

Each device will be explained below.

FIG. 2 is a block circuit diagram of the subscriber circuit device of FIG. 1. In Figure 2, 1. A telephone and network interface 21 connected to the telephone 3 and the audio signal path 10. According to the invention, a microprocessor 23 and a memory 24 are provided for the signal port interface 22 connected to the control signal path 11.12.

Note that the audio signal path 10 is connected to the communication port of network 1, and the control signal path 11.12 is connected to the signal port of network 1)1. Each is connected to H.

The functions of such subscriber line equipment 2 have increased as shown below. That is, this function is used to monitor and accumulate the filling machine status.

Counting and accumulating dial pulses.

Control of connecting and disconnecting call ports.

Output of the telephone status to signal port) 1/Execution of call processing corresponding to the signal from signal port) 1.

Communication of call-related information by connecting the signal port (signal port) I[ with the signal port (■) of any device.

Connection and disconnection of the call port with the sound source device according to commands from signal port 1 - Storage of subscriber information.

Count each glue timing.

Creating a ringing signal and sending it to the phone.

etc.

FIG. 3 is a block circuit diagram of the trunk device of FIG. 1. In FIG. 3, a destination station and network interface 41 connected between the destination station and the audio signal path 10. According to the invention, a microprocessor 43 and a memory 44 are provided for the signal port interface 42 connected to the control signal path 11.12.

In this case as well, the audio signal path 10 is connected to the communication port of the network 10, and the control signal paths 11 and 12 are connected to the signal date 1. of the network 1. ■They are connected to each. The functionality of such trunk devices has also increased as shown below. In other words, this function is for monitoring and accumulating the status of the central office line.

Counting and accumulating dial pulses.

Dial/4' Luz transmission.

Accumulation of sending numbers.

Connect and disconnect call ports.

Sending the state of the station line to signal port) 1.

Execution of corresponding call processing by signals from signal port I.

Connect the signal port ■ with the signal port I [ of any device to exchange call-related information.

Connecting and disconnecting the communication port with the sound source device and storing the station line information based on commands from the signal port 1.

The counts of various timings are 0, etc.

FIG. 4 is a block circuit diagram of the sound source device of FIG. 1. In FIG. 4, the sound source circuit 0 call port interface 51 is connected to the double-acting audio signal path lO. and a signal port interface 5 connected to the control signal path 11
In addition to 2, a microprocessor 53 and a memory 54 are provided according to the invention. In this case, the plurality of voice signal paths 10 are connected to the plurality of call ports of the network 1, and the control signal path 11 is connected to the signal line 1 of the network 1. The functions of such sound source devices are also increasing as shown below. In other words, it creates a sound source signal and constantly outputs it to the call port.

Sound source circuit status output to signal port l.

The sound source circuit is started, stopped, etc. by commands from the signal port I.

In addition, 8! of the above-mentioned sound source signal! type, dial) -n(
DT), Ringing Puck Tone (RBT).

These include busy tone (BT), hold tone, and service tone.

As mentioned above, as the functions of subscriber circuit equipment, trunk equipment, and sound source equipment increase, conversely, the CPU
The division of functions in 6 will decrease. In other words, the function of the CPU 6 is to determine the destination of the call.

Determine the number of digits of received numbers.

Decide who to call, call out, call service, etc. from the received numbers.

Management of various conversion tables, for example, dial number←accommodation location, subscriber and trunk device blockage management.

The input information from each device 2.2', 4.4', 5 is read out via the interface device 8 and analyzed.

Instruction information to each device 2.2', 4.4', 5 is sent out via the interface device 8, etc.

FIG. 5 is a flowchart showing an example of the operation of the apparatus shown in FIG.
(telephone 3'). At the beginning,
When the telephone 3 sends a calling signal to the subscriber line device 2, the subscriber line device 2 sends a call notification signal to the CPU. Result: The CPU is using subscriber line equipment 2. At the same time, the subscriber line device 2 is connected to the DT of the sound source device 5.
Connect the output port and your own call port 10. As a result, a dial tone (DT) is sent from the sound source device 5 to the telephone set 3 via the subscriber line device 2.

Next, when a dial signal is sent from the telephone 3 to the subscriber line device 2, the subscriber line device 2 disconnects from the DT output port of the above-mentioned sound source device 5. Therefore, the transmission of the dial tone is stopped.

In this state, if the dial signal continues, the subscriber line equipment 2
In addition to counting and accumulating the number of dials, the received number '1c'
Send to PU. In response to this, the CPU determines the total number of received digits and sends the number of digits to the subscriber line equipment 2. Based on this, the subscriber line device 2 receives the required number of digits, and upon completion of reception, sends the received digits to the CPU. The CPU determines the accommodation position of the subscriber line equipment 2' from the received number.

At that time, if device 2' is vacant, it will be in use and the housing position of subscriber line device t2 will be changed to subscriber line device [2'
device 2' sends a ringing tone (
RT) is sent. At the same time, the CPU also sends the accommodation position of the subscriber line device 2' to the subscriber line device 2. In response to this, the subscriber line device 2 connects the RBT output port of the sound source device 5 to its own call port and transmits a ringing tone (RBT'i) to the telephone 3.

Here, each subscriber line device 2, 2' connects its own control signal path (signal port) 11)' to the other device.

Next, the subscriber line equipment 2' sends a response signal (ACK) i
It sends the signal to the subscriber line equipment 2 via the signal port II and connects its own call port to the subscriber line equipment 2. Upon receiving the response signal (ACK), the subscriber line device 2 disconnects the RBT output port of the sound source device 5, completely stops sending out the ringing backtone, and connects its call port to the subscriber line device 2'. Connecting. As a result, the communication ports between the subscriber line devices 2 and 2' are connected, and the two telephones 3 and 3' are therefore in a communicative state.

Next, when the subscriber line equipment 2 recognizes that the telephone 3 has been disconnected, the equipment 2 sends the disconnection notification via the signal port ■'t C
The signal is sent to both the PU and the subscriber line equipment 2', the call is disconnected, the own equipment is emptied, and the signal port H1 is disconnected. On the other hand, in the CPU, the subscriber line equipment 2 is emptied.

Also ~ subscriber line equipment! In step 2', the communication port is disconnected, the BT output port of the sound source device 5 and the own communication port are reconnected, and the signal port (It) is disconnected. When a person who hears the busy tone (BT) completely disconnects the telephone 3', the subscriber line equipment 2' recognizes this, disconnects all call ports, sends this disconnection notification to the CPU, and empties the own equipment.

In this way, in call processing, the subscriber line equipment itself having a microprocessor performs control in place of the CPU, so the load on the CPU is reduced.

(6) As described in detail, according to the present invention, the total load on the CPU can be reduced, so that it is possible to add services and improve the functionality of the entire system.

In the above-mentioned embodiment, the microprocessor system is provided in all devices, including the subscriber line device, the trunk device, and the sound source device, but even if only some devices are provided with the microprocessor system, the load on the CPU will be reduced. This will help reduce the risk. This is the case, for example, when only the subscriber circuit equipment is provided with a microprocessor system.

[Brief explanation of drawings]

FIG. 1 is a block circuit diagram showing an embodiment of the switch control system according to the present invention, FIG. 2 is a block circuit diagram of the subscriber line equipment shown in FIG. 1, and FIG. 3 is a block circuit diagram of the trunk equipment shown in FIG. 1. FIG. 4 is a block circuit diagram of the sound source device of FIG. 1, and FIG. 5 is a flowchart showing an example of the operation of the device of FIG. 1. 1: Time division network, 2.2': Subscriber line equipment,
4.4':) Rank device, 5: Sound source device, 6: CPU
, 23, 43.53: Micronorocessor. Page 1 White '1 Divination (Auto i (-no change) Figure 1 Procedural Amendment (Spontaneous) July 30, 1980 Commissioner of the Patent Office Kazuo Wakasugi 1, Indication of the case 1988 Patent Application No. 111507 No. 2, Name of the invention Electronic exchange control system 3, Relationship with the case of the person making the amendment Patent applicant name (522) Fujitsu Co., Ltd. 4, Agent (3 others) (1) Invention "Detailed explanation" column (2) "Brief explanation of drawings" column (3) Drawings (Fig. 1~
(Fig. 5) 6. Contents of the amendment (13f! El details, page 4, lines 2-3, 5th page 2)
line, page 5, line 18, page 9, line 17, page 9, lines 17-18, page 9, line 19, page 9, line 20, page 10, line 2 Line, 1st page, 3rd line, 1st page, 5th page
line, 10th line, 7th line, page 10, line 8, page 10, lines 11-12, page 10, line 14, 10th line, 1st line
Line 5, page 10, lines 17-18, member 10, lines 19-
Line 20, page 10, line 20, page 11, line 2, page 11, line 3, page 11, line 4, page 11, line 8, page 11, line 10 11th member, line 11, page 11, line 12, page 11, line 13, page 11, lines 16-1
Line 7, Page 11, Lines 17-18, Page 11, Line 20, Page 12, Line 2, Page 12, Line 5, Page 12, Line 6, Page 12 [Subscriber circuit device] on line 10, line 14 on page 12, and lines 2 and 3 on page 13 is corrected by r subscriber circuit device jVC. (2) Specification page 13, lines 11-12, page 13, line 1
Correct "Calorie's circuit device" in lines 6 to 17 to "Subscriber's circuit device." (3) Create the official drawing. (However, it has been cleaned and no changes have been made to the contents) 7. List of attached documents

Claims (1)

[Claims] 1. A time division network, and a plurality of subscriber circuit devices connecting the time division network and telephone sets. In the electronic switching control system comprising a plurality of trunk devices that are all connected to the time division network and other stations, a sound source device connected to the time division network, and a central processing system that controls the entire system, each subscriber An electronic exchange characterized in that a microprocessor system is provided in at least some of the circuit devices, each of the trunk devices, and the sound source device, and each of the microprocessor systems is made to share the functions of the central processing system. control method.