JPS5925413B2 - Interrupt connection control method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an interrupt connection control system for a subscriber who is on a call.

Normal crossbar exchanges do not have subscriber files that store subscriber information necessary for connection control, and subscriber files installed in electronic exchanges
Generally, subscriber information stored in a subscriber file cannot be changed when an outgoing call occurs, when an incoming call occurs, and when a call ends.

Therefore, control over whether or not to perform an interrupt connection is determined by whether or not the originating subscriber requests an interrupt connection, so unnecessary interrupt connections are not allowed, such as in facsimile communication services. Even when a call is being made using a service that would disrupt the signal, if an interrupt connection request is made, the interrupt connection will be made and there is a risk that the signal during the call will be disrupted. Furthermore, even if an interrupt connection to the receiving subscriber is allowed, such as when receiving long-term view data, if the calling subscriber does not request an interrupt connection, it will be treated as busy. There were flaws. The present invention eliminates the above-mentioned drawbacks, and the present invention identifies and stores the call type of the subscriber who is in the middle of a call, and when an incoming call to the subscriber who is in the middle of a call is made, the call type is identified and stored. The purpose of this is to determine whether interrupt connection is possible by referring to type information and to perform optimal interrupt connection control.

Examples will be described in detail below. FIG. 1 is a block diagram of an embodiment of the present invention, in which the terminal station LS is a crossbar exchange, and the central station TS above it is an electronic exchange having a subscriber file.

In the figure, 1 is a subscriber, 2 is a crossbar exchange, 3,
10 and 12 are incoming trunks or outgoing trunks, 4 and 13 are incoming trunks, 11 is outgoing trunks, 5 is a marker, 6 is a number group, 7 is a special trunk, 8 and 16 are information transfer devices, 9 is an electronic exchange, 14 1 is a central control unit, 15 is a subscriber file, and 17 is a talkie device. The subscriber file 15 provided in the electronic exchange 9 is provided with an area for storing communication type information (hereinafter referred to as type information) indicating the type of communication during a call for the subscriber.
(1) Calls that allow interrupt connection only for calls for which the originating subscriber desires interrupt connection (calls using general services);
(2) Calls that do not allow interrupt connection for all calls (facsimile communication service, etc.), (3) Calls that allow interrupt connection for all calls (receive long view data, etc.) Information indicating this is stored in that area.

Further, such call type can be identified by a special number or the like in the dialing information from the calling subscriber. Further, the subscriber 1 and the special trunk 7 are set in a two-line representative relationship, and when the subscriber 1 is the parent number, the special trunk 7 is set as the child number.

Thus, when subscriber 1 is busy, an incoming call is connected to special trunk 7. While subscriber 1 is talking to another subscriber via crossbar exchange 2, incoming or outgoing trunks 3, 10, electronic exchange 9, incoming or outgoing trunk 12, incoming trunk 13, electronic exchange 9, outgoing trunk 11 , when an incoming call to subscriber 1 occurs via incoming trunk 4, marker 5 controls connecting special trunk 7 to incoming trunk 4 based on information from number group 6, since subscriber 1 is busy. The marker 5 identifies that the subscriber 1 is an interrupt connection service subscriber, and transmits the connection information from the calling subscriber and the subscriber from the special trunk 7 via the information transfer devices 8 and 16. 1 is a subscriber of the interrupt connection service to the central control unit 14.

When the central control unit 14 receives this information, it reads the call type information of the subscriber 1 stored in the subscriber file 15, refers to the connection information from the calling subscriber, and assigns the information as shown in the table. It is determined whether the connection is possible or not. The central control device 14 transfers this determination result to the marker 5 via the information transfer devices 16, 8 and the special trunk T, and the marker 5 performs connection control based on this determination result.

For example, for general service calls, type information (
a) Information indicating that interrupt connection is possible is stored in the subscriber file 15, and if an incoming call to a subscriber who is currently talking requests interrupt connection, a determination result indicating that interrupt connection is possible is obtained, and the above-mentioned process is performed. Since the determination result is transferred to the marker 5, the marker 5 controls the connection between the subscriber 1 and the special trunk 7, forms an interruption route, and displays a busy call to the subscriber 1.

Also, if the judgment result is that interrupt connection is not possible, marker 5 is
Control is performed to connect the talkie device 17 and the special trunk 7 without performing interrupt connection control, and the talkie device 17 sends a message to the originating subscriber that the interrupt connection is not possible or sends out a busy tone. Notify that interrupt connection is not possible using a known method. In addition, if subscriber 1 is making a call through an internal connection without going through the central office's electronic exchange 9, the type of call of subscriber 1 is stored in the subscriber file 15 via the information transfer devices 8 and 16. is memorized, and when an incoming call to subscriber 1 occurs while subscriber 1 is talking through an internal connection, it refers to the subscriber file 15 and determines whether or not an interrupt connection is possible, as in the case described above. Based on the result of this judgment, the marker 5 performs connection control.

FIG. 2 is a block diagram of another embodiment of the present invention, in which the terminal station LS is an electronic exchange having a subscriber file.

In the figure, 21 is a subscriber, 22 is an electronic exchange, and 23 is a subscriber.
is the incoming trunk or outgoing trunk, 24 is the incoming trunk, 2
5 is a central control unit, and 26 is a subscriber file. When subscriber 21 is making a call to another subscriber via electronic exchange 22 or incoming or outgoing trunk 23, information about the type of call being made is stored in subscriber file 26.

In this case, when an incoming call to the subscriber 21 occurs via the incoming trunk 24, the incoming call and the subscriber file 26
The central controller 25 refers to the call type information of the subscriber 21 stored in , and determines whether interrupt connection is possible as shown in the table above, and if the result of this determination is that interrupt connection is possible. connects the subscriber 21 and the incoming trunk 24,
If the call is displayed as a busy call, and the judgment result is that the interrupt connection is not possible, the call can be interrupted by a known method such as connecting the talkie device 27 and the incoming trunk 24 and sending the talkie to the subscriber who made the interrupt call. Notify that connection is not possible. As explained above,
The present invention provides a subscriber file provided in a switching network with an area for storing the type of call being made by the subscriber, stores the call type of the subscriber who is currently making a call in the subscriber file, and For an incoming call to a subscriber, the call type information stored in the subscriber file is referenced to determine whether interrupt connection is possible, and the interrupt connection is controlled based on the result of this determination. If you are performing facsimile communication etc. from
It is possible to prevent unnecessary interrupt connections that cause signal disturbances, and when receiving view data for a long time, interrupt connections are made for all incoming calls.
Optimal interrupt connection control can be performed.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of one embodiment of the present invention, and FIG. 2 is a block diagram of another embodiment of the present invention. 1 and 21 are subscribers, 2 is a crossbar exchange, 3, 10, 1
2, 23 are incoming trunks or outgoing trunks, 4, 13, 24
is an incoming trunk, 5 is a marker, 6 is a number group, 7 is a special trunk, 8 and 16 are information transfer devices, 9 and 22 are electronic exchanges, 11 is an outgoing trunk, 14 and 25 are central control units, and 15 and 26 are Subscriber files 17 and 27 are talkie devices.

Claims (1)

[Claims] 1. An area is provided in the subscriber file provided in the switching network to store communication type information indicating the type of communication during a subscriber's call, and interrupt connection is performed only for calls for which the caller requests interrupt connection. The type of communication during the call is specified in the area by identifying any of the following: a call that is allowed, a call that does not allow interrupt connection for all calls, and a call that allows interrupt connection for all calls. and the communication type information indicating the type of communication during the call stored in the area of the subscriber file and the calling subscriber's and means for determining whether or not an interrupt connection is possible by referring to the connection information, and controlling whether or not to perform an interrupt connection for an incoming call to a subscriber who is currently talking based on the determination result of the means. Features an interrupt connection control method.