JPH08251638A - Dial-in line exchange system - Google Patents

Abstract

PURPOSE: To efficiently execute the operation of a line wire response utilizing a dial line by displaying an incoming call on a button of a multifunction telephone set in each DID number transmitted from a public network in a dial-in line. CONSTITUTION: An incoming means is provided with means A to C and incoming management data 8 to 10 corresponding to the means A to C and executes incoming control while referring to management data 7 under control by a control means 6. The data 8 for the means A detects plural extension telephone set buttons based upon DID numbers and successively executes incoming processing based upon incoming extension data. The data 9 for the means B detects one telephone set button and records the number of valid incoming calls and the number of incoming calls. A trunk 4 connected to the public network 2 detects an incoming call and the control part 6 determines the button of a called party multifunction telephone set by each DID number obtained from the network 2 and displays incoming calls on plural buttons. When the telephone set 3 responds an incoming call, talking between the network 2 and the telephone set 3 can be attained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of operating a dial-in line in a private branch exchange. In recent years, there is a demand for efficient operation of lines by utilizing dial-in in consideration of the efficiency of line use. For this reason, it is necessary to cope with the diversification of the operation system of the dial-in line in the private branch exchange.

[0002]

2. Description of the Related Art In a conventional private branch exchange dial-in function, a DID (dial-in dial) from a public network is used.
If the extension telephone corresponding to the number is not in a call-enabled state, a busy tone (busy tone) is sent from the switch of the public network to the caller by, for example, sending a signal notifying the public network that the call cannot be answered. It was like this.

Although services such as direct line and floating line are known, in this case, the line accommodation position number ( Physical number)
It was a response.

[0004]

Therefore, according to the conventional dial-in function, the extension telephone corresponding to the DID number (logical number) from the public network receives an incoming call, and after answering the incoming call, the call is disconnected or transferred. Unless the extension telephone itself becomes idle after the operation, etc., it will not be able to respond to the incoming DID number, and if the same DID number is received simultaneously from multiple station lines, the incoming call cannot be received (defect). Occurred.

When it is possible to receive the same DID number at the same time, there is no extension telephone that responds to the call when the extension telephone is busy. There is also a problem (defect) that the ringtone is heard for a long time and kept waiting.

According to the present invention, in the dial-in line, the calling process is performed by the conventional technique in correspondence with the line accommodation position number (physical number), and the incoming process is performed for each DID number (logical number) transmitted from the public network. Providing an effective operation method for incoming calls by providing line operations such as receiving calls to multiple extension phones (1: N) and receiving the same DID number to multiple extension phones at the same time (M: 1) The purpose is to do.

[0007]

FIG. 1 is a block diagram showing the principle of the present invention. In the figure, 1 is a switchboard, 2 is a public network, 3 is a multifunction telephone, 4 is a trunk, 5 is a line circuit, 6 is a control unit, 7 is management data, 8 is incoming call management data in means A, and 9 is means B. Incoming call management data in, 10 is means C
The incoming call management data in is shown.

This system comprises a public network 2 and a multi-function telephone 3.
, A trunk 4 connected to the public network 2 by a plurality of lines, a line circuit 5 connected to the multi-function telephone 3, and a control unit 6 for controlling these. And management data 7 necessary for management control.

The means for making a call is the same as the conventional means,
The line accommodation position number (physical number) of the trunk 4 to be transmitted is managed by the transmission management data in the management data 7, and the control unit 6 of the exchange 1 also stores the transmission management data by the transmission operation of the multifunction telephone 3. The line accommodation position number is selected for and and transmission control is performed.

There are three means, means A, means B, and means C as means for receiving an incoming call. In the management data, the incoming call management data 8 in the means A and the incoming call management data 9 in the means B are respectively included.
And the incoming call management data 10 in the means C, and the control unit 6
The control when receiving a call is performed by referring to the management data 7 under the control of.

The incoming call management data 8 in the means A is DI
A plurality of extension telephone buttons are detected by the D number, and incoming call processing is sequentially performed by the incoming call extension data. The incoming call management data 9 in the means B is configured such that one extension telephone button is detected by the DID number, incoming call processing is performed by the incoming extension data, and the number of valid incoming calls and the number of incoming calls are recorded.

The incoming call management data 10 in the means C is DI
A plurality of extension telephone buttons are detected by the D number, incoming call processing is sequentially performed by the incoming extension data, and the number of valid incoming calls and the number of incoming calls of the plurality of extension telephones are recorded.

[0013]

[Action]

[Means A] By this means, it is possible to make an incoming call to a button of a plurality of multifunction telephones corresponding to DID numbers (logical numbers). In the incoming call management data 8 in the means A, buttons of a plurality of multifunction telephones are designated in advance for each DID number (logical number).

In the control unit 6, the trunk 4 connected to the public network 2 detects an incoming call from the public network 2, and the control unit 6 of the exchange 1 receives the multi-destination telephone from the public network 2 for each DID number. Button is determined, and the incoming call display (lamp lighting, ringer ringing, etc.) is controlled for a plurality of buttons in sequence. By responding to the incoming call on the multifunction telephone 3, the public network 2
A call path is formed between the multi-function telephone 3 and the multi-function telephone 3 to enable a call. [Means B] By this means, even if the same DID number is received during a call by the button of the multi-function telephone corresponding to the DID number (logical number), it is possible to make an incoming call. In the incoming call management data 9 in the means B, one button of the multifunction telephone is designated in advance for each DID number (logical number).

In the control unit 6, the trunk 4 connected to the public network 2 detects an incoming call from the public network 2, and the control unit 6 of the exchange 1 receives an incoming call to the multi-function telephone from the public network 2 for each DID number. Determines the front button and controls the incoming call display (lamp lighting, ringer ringing, etc.) regardless of the state of the multi-function phone.
It becomes possible to respond similarly to the means A.

The effective number of incoming calls is designated in advance for each DID number, and the following control is performed to control the number of incoming calls with the same DID number. When there is an incoming call,
It is determined whether the total number of incoming calls for each DID number and the number of calls in progress after the incoming call (the number of incoming calls) exceeds the effective number of incoming calls. If the total number of incoming calls is exceeded, busy on the normal dial-in line. The same control as the processing is performed, or the incoming call is controlled for the extension registered in advance. If it does not exceed the limit, the above incoming processing is performed. The number of incoming calls is counted up when the incoming call processing is performed, and is counted down when the call is abandoned midway or disconnected after the call. [Means C] With this means, it is possible to make an incoming call to a button of a plurality of multifunction telephones corresponding to a DID number (logical number), and to make an incoming call even if the same DID number is received during a call by the button of the multifunction telephone. And In the incoming call management data 10 of the means C, a plurality of buttons of the multifunction telephone and the effective number of incoming calls are designated in advance for each DID number (logical number), and the same control as the means A and the means B is performed. Further, the control of the effective number of incoming calls is similar to that of the means B.

[0017]

FIG. 2 shows an embodiment of a system configuration diagram of the present invention. In the figure, 11 is an exchange, 12 is a public network, 13 is a multifunction telephone, 14 is a trunk, 15 is a line circuit, 16 is a control unit,
17 is control data, 18 is telephone, 19 is dial-in line,
20 indicates a button. Multi-function telephone 13 is ac, telephone 18 is 1
~ 3, the dial-in line 19 consists of AC.

The exchange 11 is connected to the public network 12 and a plurality of dial-in lines A to C, and is also connected to a plurality of multifunction telephones a to c. Also, telephones 1 to 3 as subscribers are connected to the public network 12. Each of the multi-function phones 13 has a button 20. The control data 17 is stored in the memory in the control unit 16.
To provide. The control data indicates an embodiment of means C in dial-in of an analog line.

An example of control data stored in the storage device is shown in FIG. In the figure, there are (a) DID management data, (b) DID extension incoming data, and (c) DID button incoming data, and the processing corresponding to the DID number is determined and controlled by this data. DI
DI by the incoming control number set in the D management data
It is controlled by being classified into D extension incoming data and DID button incoming data.

Telephone 1 which is a subscriber of the public network is XXX-xxx
The public network sends an incoming signal to the exchange by dialing x, and the exchange sends a temporary response signal to the public network by detecting the incoming from the public network, and then the public network sends it. Receive the DID number (xxxx).

The incoming control number is determined from the received DID number based on the DID management data stored in the storage device in the exchange. When the incoming call control number is 0 to 511, the extension incoming call is made by the DID extension incoming call data, and when it is 512 to 1023, the button incoming call is made by the DID button incoming call data.

When the DID number is yyyy, the incoming call control number is a (0≤a≤511), and since the call is an extension call, the receiving destination telephone accommodation position is derived from the DID extension call incoming data.
Perform processing. (Same as the conventional DID processing) When the DID number = xxxx, the incoming call control number is b (513 ≤ b ≤
1024), the number of valid incoming calls in the DID button incoming call is compared with the incoming / response counter. If the number of valid incoming calls is large, the extension designation signal is sent to the public network and the incoming / response counter is displayed. The count-up is performed, and the incoming call display requests are sequentially sent to the buttons of the multi-function telephone that should receive an incoming call according to the telephone accommodation position and the button number.

After that, when the telephone set 2 dials the same XXX-xxxx again, the above control is performed in the same manner, and the incoming call display requests are sequentially sent again to the buttons of the multifunction telephone to display the incoming call. Further, although the above embodiment describes the dial-in of the analog line, it is possible to control the interface such as ISDN by using the similar exchange control method.

An embodiment of the processing flow of this control unit will be described with reference to FIG. (1) When the control unit detects an incoming call from the public network, it performs a primary response process and sends a primary response signal to the public network. (2) Receive the DID number and perform the receiving process using the DID management data. (3) The DID number is analyzed and converted into the incoming call control number to classify the processing. (4) If the incoming call control number is an unacceptable DID number, normal busy processing (sending busy tone by the public network) is performed. (5) If the incoming control number = extension incoming (0 to 511),
The extension checks whether or not an incoming call is possible, and if not, a normal busy process (sending a busy tone by the public network) is performed. (6) If the extension can receive a call, the extension designated reception completion processing (extension reception completion signal transmission) is performed. (7) If the incoming control number = button incoming (512 to 1024), it is checked whether the counter for each DID number is within the valid incoming number. If the counter is larger than the valid incoming number, normal busy processing (public The busy tone is transmitted via the network). (8) If the counter is within the valid number of incoming calls, the extension designated reception completion processing (extension designated reception completion signal is sent). (9) Count up the number of incoming calls for each DID number. (10) Performs incoming call processing (incoming call display request, etc.) on the button of the multifunction telephone.

In the above processing flow, the processing in the case of the incoming call control number (7) to (10) = button incoming (512 to 1024) is a portion added from the conventional processing in this embodiment. The sequence between the public network and the exchange in this embodiment will be described with reference to FIG. In the figure, (a) shows a case of a normal incoming call sequence, and (b) shows a case of an incoming call impossible sequence. The figure shows a state between a calling telephone, a public network, a switchboard, and a plurality of multifunction telephones.

In the case of the normal incoming call sequence of FIG.
A calling operation is performed to the public network by the calling of the calling telephone, and a dial tone (DT) is returned from the public network to the calling telephone. Dialing information by dialing the originating phone
(XXX-xxxx) is sent to the public network.

When the exchange receives the dial information from the public network (premise), the exchange performs a primary response process,
The primary response signal is transmitted to the public network, the dial tone disappears, the exchange receives the DID number (xxxx) from the public network, and the DI
D number reception processing is performed, the DID number is analyzed, an extension designation reception completion signal is transmitted to the public network, and a ring tone (RBT) is transmitted from the public network to the calling telephone.

In the exchange, the incoming call processing of the telephone is performed according to the designated extension number, and incoming call display requests are sequentially sent to the buttons of the multifunction telephone to turn on the lamp display of the multifunction telephone.
Controls ringer ringing. Means A, B, C of the present invention
Corresponding to, a communication path is formed between the public network and the multi-function telephone to enable communication.

In the case of the unacceptable sequence shown in FIG. 5 (b), a calling operation is performed to the public network by the calling of the calling telephone, and a dial tone (D
T) is returned. Dial information (XXX-xxxx) is sent to the public network by dialing the calling telephone.

When the exchange receives the dial information from the public network (premise), the exchange performs a primary response process,
The primary response signal is transmitted to the public network, the dial tone disappears, the exchange receives the DID number (xxxx) from the public network, and the DI
Although the D number reception processing is performed, the extension designation reception completion signal is not transmitted to the public network because the call cannot be received.

In the public network, since the extension designation reception completion signal is not returned, timing out occurs and a non-contact tone (BT) is sent to the calling telephone. The calling telephone learns that it cannot connect to the dial-in partner and hangs up the handset. By making a call again after a while, the sequence becomes a normal incoming call or a non- incoming call.

[0032]

According to the present invention, it is possible to display an incoming call on the button of the multi-function telephone for each DID number transmitted from the public network on the dial-in line, and to receive an incoming call for a plurality of buttons of the same multi-function telephone. To be able to
It is possible to operate more efficiently with the office line response using the dial-in line.

Further, by limiting the effective number of incoming calls for each DID number, it is not necessary to continue to hear the ringing tone of the public network from the party who originated from the public network, and the serviceability is further improved. It greatly contributes to the diversification of operational forms.

[Brief description of drawings]

FIG. 1 is a block diagram of the principle of the present invention.

FIG. 2 is an embodiment of a system configuration diagram of the present invention.

FIG. 3 is an example of control data stored in a storage device.

FIG. 4 Example of processing flow of control unit

[Fig. 5] Sequence example between public network and exchange

[Explanation of symbols]

 1,11 Switchboard 2,12 Public network 3,13 Multi-function telephone 4,14 Trunk 5,15 Line circuit 6,16 Control section 7 Management data 8 Incoming call management data at means A 9 Incoming call management data at means B 10 At means C Incoming call management data 17 Control data 18 Telephone 19 Dial-in line 20 Button

Claims (7)

[Claims] 1. In a dial-in line, a call is made in response to a line accommodation position number (physical number), and a call is received in a plurality of multiple numbers corresponding to DID numbers (logical numbers) received from a public network. A dial-in circuit switching system characterized in that it can be assigned to a button of a functional telephone and an incoming call is made to the button of the multifunction telephone. 2. In the dial-in line, the outgoing call is made in response to the line accommodation position number (physical number), and the incoming call is made in one multi-channel corresponding to the DID number (logical number) received from the public network. It can be assigned to the button of the functional telephone, and the same DI can be
A dial-in circuit switching method characterized by making an incoming call even when receiving a D number. 3. In a dial-in line, outgoing calls are made in correspondence with line accommodation position numbers (physical numbers), and incoming calls are made by a plurality of multiple numbers corresponding to DID numbers (logical numbers) received from the public network. It can be assigned to the button of the functional telephone, and the same DI can be
A dial-in circuit switching method characterized by making an incoming call even when receiving a D number. 4. A dial-in line is provided with a limit on the number of incoming calls corresponding to the DID number, and when the incoming call is processed, the limit is judged and a busy tone is sent from the public network to the caller. The dial-in circuit switching system according to claim 2, wherein 5. In the dial-in line, a limit is set for the number of incoming calls corresponding to the DID number, and when the incoming call is processed, the limit is determined and if the limit is exceeded, the incoming call is displayed on another extension that can receive the incoming call. The dial-in circuit switching system according to claim 2. 6. In the dial-in line, a limit is set for the number of incoming calls corresponding to the DID number, and when the incoming call is processed, the limit is judged and a busy tone is sent from the public network to the caller. 4. The dial-in circuit switching system according to claim 3, wherein. 7. A dial-in line, wherein a limit is set on the number of incoming calls corresponding to DID numbers, and when the incoming call is processed, the limit is judged, and if the limit is exceeded, the incoming call is displayed on another extension capable of receiving an incoming call. The dial-in circuit switching system according to claim 3.