JPH0936961A - Exchange system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To unnecessitate the repetition of a call operation caused by the busy state of a callee by performing multiconnection between plural callers and the callee of one subscriber interface. SOLUTION: Before call in the case of connection to a incoming call subscriber terminal 8 of an information collection enterprise, a call originating subscriber terminal 1 originates a call after setting a incoming call destination telephone number for designating the incoming call subscriber terminal 8 and information desired to be transmitted to the callee in a call control message(UUI), for example. By means of the sent incoming call destination telephone number, an exchange network/exchange 6 selects a multiconnection point 9 for connecting a subscriber's line 7 for call incoming subscriber and sends the caller ID of the call originating subscriber terminal 1, UUI and caller ID information to the call incoming subscriber terminal 8 while using a signal information channel for call control. When another originating call subscriber terminal 2 originates a call while designating the incoming call subscriber terminal 8 during the connection, for example, the call is connected through the multiconnection point 9 by the exchange network/exchange 6.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a digital (IS
DN) Exchange system of exchange.

[0002]

2. Description of the Related Art FIG. 6 is a diagram when a calling terminal and a called terminal are connected via a switching network / digital switch,
In FIG. 6, 61 to 64 and 75 are calling subscriber terminals, and 65
Is a switching network / exchange, 66 to 69 are subscriber lines for called subscribers, 70 to 73 are called subscriber terminals, 74 is a receiving subscriber terminal accommodation device, and 76 is a busy tone sending trunk.

The conventional method will be described in detail with reference to FIG. For example, when a user makes a call to a terminal in the called subscriber terminal accommodation device 74 operated by an information center or the like, the calling subscriber terminal 61 calls the switching network / switch 65 to A destination telephone number designating the terminal 70 is transmitted. The switching network / switch 65 interprets the called telephone number, selects a point to connect the subscriber line 66 for the called subscriber, sends a call signal to the called subscriber terminal 70, and responds to the called subscriber terminal 70. Wait for After the response of the terminating subscriber terminal 70, the switching network / switch 65 connects the originating subscriber terminal 61 and the terminating subscriber terminal 70 to establish a communication state.

When other subscribers connect using the calling subscriber terminals 62 to 64, the same procedure is performed.
And the called subscriber terminal 71, the calling subscriber terminal 63 and the called subscriber terminal 72, the calling subscriber terminal 64 and the called subscriber terminal 73
Connect.

Also, for example, when the calling subscriber terminal 64 and the called subscriber terminal 73 are communicating with each other and the calling subscriber terminal 75 specifies the telephone number of the called subscriber terminal 73 to make a connection request, a switching network / switch is used. The terminal 65 detects that the called subscriber terminal 73 is in communication with another terminal, and performs the following processing depending on whether it is an analog terminal or a digital terminal.

When the calling subscriber terminal 75 is an analog terminal, the calling subscriber terminal 75 is connected to the busy tone sending trunk 76 to send a signal notifying that the calling party is busy. The calling subscriber terminal 75 knows from the busy signal that the called subscriber terminal 73 is in communication with another terminal and cannot communicate. If you are using a digital terminal,
The calling subscriber terminal 75 knows that the connection cannot be established based on the connection prohibition information sent via the D-CH, and performs a disconnection process. The calling subscriber cannot make a communication connection with the called party, so after a certain time, the call is made again and the same connection processing as above is performed.

[0007]

As shown in FIG. 6, the receiving subscriber terminal accommodating device 74 of the information center or the like needs to receive the receiving subscriber terminal 70 in order to communicate with many callers at the same time. As shown in .about.73, it is necessary to prepare a line for selecting a large number of subscriber lines, a telephone number, and a called subscriber terminal for connecting them, which is not economical.

Further, when many callers make connection requests to the same telephone number, other callers cannot connect while communicating with one subscriber, and callers who cannot connect perform call operation again. There is a drawback that it is necessary to make a connection request and to repeatedly make a call until a connection is made.

[0009]

In order to solve the above problems, the switching system of the present invention, in connection control of an exchange, allows multiple callers to simultaneously connect to a called party who has made a connection request. Moreover, the caller does not send a busy signal to the caller so that the caller can communicate with the caller. Even if there are many connection requests, the caller can be connected without the caller being busy. It is a thing.

The caller in the connectable state does not use the user information transfer channel (B-CH) but the call control signal information channel (D-CH) of the calling terminal.
After receiving information such as a call control message (UUI) by the function of the exchange using the switch, the caller identification number and the call control message for each connection communication of one calling terminal to the receiving terminal via D-CH. (UUI) By providing a means for transferring information, a large number of callers can be connected to the callees in a specific concentrated time zone to transfer the information.

The operation of the present invention is as follows. By performing the multi-connection control of the exchange and the information transfer using the D-CH according to the present invention, the caller side does not become unable to connect because the callee is communicating, and the caller side does not have to perform a redial operation. I will be done. Also, for the callee side, it is not necessary to prepare many lines and terminals in order to make the connection efficient in the same time zone as many callers, and it is possible to economically construct a system and to make a call. It becomes possible to efficiently receive the calling information of the person in a short time by using the D-CH without using the B-CH.

[0012]

1 is a diagram showing an embodiment of multi-connection in a switching network / digital switch according to the present invention,
FIG. 2 is a graph showing an example of the number of simultaneous connections of incoming subscribers according to the connection time zone in the exchange, FIG. 3 is a diagram showing a connection sequence example of the first embodiment according to the present invention, and FIG. 4 is according to the present invention. FIG. 5 is a diagram showing an example of a connection sequence according to the second embodiment, and FIG. 5 is a diagram showing an example of call setup message information.
A detailed description will be given below with reference to the drawings.

In FIG. 1, 1 to 5 are calling subscriber terminals,
6 is a switching network / switch, 7 is a subscriber line for a called subscriber, 8 is a called subscriber terminal, and 9 is a multi-connection point. The calling subscriber terminals 1 to 5 are housed in a switching network / switch 6. For example, when connecting to a called subscriber terminal 8 of an information gathering company, the calling subscriber terminal 1 specifies the called subscriber terminal 8 and the called telephone number before the calling to the exchange network / switch 6. The information to be sent to the person is set in the call control message unit (UUI) and a call is made to the switching network / switch 6.

The switching network / switch 6 interprets the destination telephone number sent from the calling subscriber terminal 1, selects the point connecting the subscriber line 7 for the called subscriber, and the called subscriber terminal 8 For call control signaling information channel (D-CH)
Is used to send out the caller ID of the calling subscriber terminal 1, the sent UUI, and the callee ID information. The receiving subscriber terminal 8 receives the information via the D-CH and then sends a connection acceptance signal to the switching network / switch 6 side. After sending out the call setup message information, the switching network / switch 6 disconnects the calling subscriber terminal 1.

Further, for example, when the calling subscriber terminals 2 to 5 designate the called subscriber terminal 8 to make a call while the calling subscriber terminal 1 and the called subscriber terminal 8 are connected, the switching network / switch 6
Performs the same processing as the calling processing of the calling subscriber terminal 1 described above, and performs the connection processing for connecting the calling subscriber terminals 2 to 5 to the called subscriber terminal 8 as shown at the multi-connection point 9. Then, without connecting B-CH, through D-CH,
Caller ID, callee ID, UUI, etc. are called subscriber terminal 8
To send to.

Next, changes in the number of simultaneous connections on the called subscriber side according to the connection time zone according to the present invention will be described with reference to FIG. In the graph of FIG. 2, the number of simultaneous connections 21 to the incoming subscriber terminal 8 is shown on the vertical axis, and the transition of a certain connection time zone is shown on the horizontal axis of 22.

For example, when the application information is sent to the called subscriber terminal 8 which is an information gathering company in a specific time zone due to an event or the like, the switching network / switch 6 calls the calling subscriber terminal. Is accepted and multi-connection is made to the called subscriber terminal 8. Since many callers make calls to the called subscriber terminal 8, the number of connections increases due to many connections as shown by the number 23 of simultaneous connections at the multi-connection point in FIG.

Since disconnection processing is performed after the information transmission / reception is completed,
The number of simultaneous connections may temporarily decrease as shown by the change in the decrease event 24, but since the switching network / switch 6 continues the connection processing in response to a request originating later,
Increasing Concurrent Connections The number of simultaneous connections may increase further, as indicated by the change in event 25. End point 2 of simultaneous connection
As shown in FIG. 6, when the caller's connection is completed, the switching network / switch 6 performs communication termination processing with the terminating subscriber terminal 8.

FIG. 3 shows an example of a connection sequence according to the first embodiment of claim 1 of the present invention. While the receiving terminal 32 and the A terminal on the sending terminal 30 side are connected, the B terminal makes a call. The sequence when sending call setting message information (callee ID, caller ID, UUI, etc.) to the callee terminal 32 after connecting with the callee terminal 32 is shown. The exchange 31 is B
Even when the terminal and the receiving terminal 32 are connected, the disconnection process of the A terminal is performed, and the same process is performed for a call from another terminal.

FIG. 4 shows an example of a connection sequence according to the second embodiment of claim 2 of the present invention. When the incoming terminal 42 and the A terminal, B terminal, and C terminal on the outgoing terminal 40 side are respectively connected, a call setting message by calling is transferred, and after the connection acceptance process, the B-CH connection is not made, and Terminal disconnection processing, B terminal disconnection processing, and C terminal disconnection processing are performed.

The exchange according to the second embodiment is shown in FIG.
As shown in the example of the D-CH call setup message information shown in
The callee ID number, the caller ID number, and the call control message (UUI) from the caller are set and transferred to the individual units.

[0022]

As described above, according to the present invention, the service provider on the receiving side can collect the data of a large number of callers in a short time with a small number of lines and devices, so that the system can be economically constructed. Alternatively, the service can be provided. On the other hand, on the switching network / switch side, when many callers have concentrated on specific callees and there is a request for connection, only the communication connection subscribers are busy, and communication becomes impossible and the call is processed as an invalid call. There were many things that were not linked to, but with the present invention, all can be communicated and the income will increase. Furthermore, the caller side does not enter the busy state when the call is made, and the intended communication ends, so
It is very convenient because there is no need to call again.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of multi-connection in a switching network / switch according to the present invention.

FIG. 2 is a diagram showing the number of simultaneous connections of incoming subscribers in connection time zones.

FIG. 3 is a diagram showing an example of a connection sequence.

FIG. 4 is a diagram showing an example of a connection sequence.

FIG. 5 is a diagram showing an example of D-CH call setup message information.

FIG. 6 is a diagram showing an example of connection in a conventional switching network / switch.

[Explanation of symbols]

 1 to 5 calling subscriber terminal 6 switching network / switch 7 subscriber line for terminating subscriber 8 terminating subscriber device 9 multi-connection point

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Tomohiro Yamada 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation

Claims (2)

[Claims] 1. In an ISDN digital exchange,
Multiple callers and callees connected to one subscriber interface are connected in multiple, and when there are multiple callers in the call to the same callee, the caller receives the caller without causing a busy call. An exchange method characterized by having a means for connecting to a caller and a means for releasing the connection to each caller even after other callers and callees remain connected after communication with each caller is completed. 2. The switching system in the exchange according to claim 1, wherein when a plurality of callers are simultaneously called and connected to a called subscriber connected to one subscriber interface, the calling party and the called party are called. Of the call setting message information without connecting the user information transfer channel (B-CH) of at least the call control message (UUI) area, the caller ID information, and the callee ID information And a means for transferring to the called party by using a call control signal information channel (D-CH).