JPS60263553A - Telephone exchange connection system - Google Patents

Abstract

PURPOSE:To simplify the constitution of a telephone network containing both electromagnetic exchanges and electronic exchanges, by attaining a request for service even with a call given from a subscriber at either side of the electromagnetic or electronic exchange. CONSTITUTION:Signal devices 3a and 4a are provided to electromagnetic exchanges 3 and 4 for subscriber, and a talking circuit is set so that the calls of subscribers 7 and 8 stored in the exchanges 3 and 4 are always transmitted through the repeating electronic exchanges. A repeating electroni exchange 9 receives the subscriber information and the circuit discrimination information from the devices 3a and 4a inquires the propriety for connection to an incoming subscriber to an incoming exchange through its own signal device 9a. When the connection is impossible, the exchange 9 drives its own service device 24 to perform the control for acceptance of services including the reservation of an unfinished call, the transmission of a message to the incoming subscriber, etc.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a telephone exchange connection system, and in particular, in a telephone network in which an electromagnetic exchange (such as a crossbar exchange) and an electronic exchange coexist, when a subscriber is busy, The present invention relates to an exchange connection method suitable for registering various services in an exchange without going on-hook when an absence or non-response is encountered.

[Background of the invention]

Regarding the types of telephone exchanges, the control logic is based on the operation of the circuit,
and electromagnetic exchanges such as step-by-step exchanges and crossbar exchanges that use wiring logic determined by the wiring that connects circuits, and electronic exchanges that specify control procedures and control methods using programs and data stored in storage devices. There is.

In general, electronic exchanges have a signaling function that allows various types of information to be sent and received between exchanges in addition to the call line, and a function that allows the call line once set to be freely changed to a different trunk at any time. Electromagnetic exchanges do not have these functions.

In telephone networks where electronic exchanges and electromagnetic exchanges coexist, conventionally, only when the originating exchange, terminating exchange, and relay exchange forming a telephone line are all composed of electronic exchanges, the originating subscriber is busy, absent, or absent. If you encounter no response,
Without putting the receiver on-hook, it is possible to request the exchange for services such as reserving a call that was not completed or transmitting a message after the callee ends the call or cancels the call. However, if there is an electromagnetic exchange among the originating exchange, terminating exchange, and relay exchange that form the telephone line, the originating subscriber must first put the receiver on the hook,
Only by dialing the special number again can you request services from the exchange, such as reserving an incomplete call or transmitting a message after the callee ends the call or cancels the call. In order to solve the second drawback, all electromagnetic exchanges must have a signaling function that allows them to send and receive various information between the exchanges in addition to the call line, and that once the call line has been set up, the connection can be freely changed to a different trunk at any time. There is a method to provide a function that can be used, but this method requires a very complicated configuration of the electromagnetic switch.

It becomes expensive.

[Purpose of the invention]

An object of the present invention is to solve the problems of the prior art as described above, in a telephone network where electromagnetic exchanges and electronic exchanges coexist. , any time a call is made by a subscriber housed in any electromagnetic exchange, without the need to go on-hook and redial, reservations for missed calls,
An object of the present invention is to provide a telephone exchange connection system in which services such as transmission of a message after a caller ends a call or cancels an absence can be requested from an exchange.

[Summary of the invention]

In order to achieve the above object, the telephone exchange connection system according to the present invention provides an electromagnetic exchange for subscribers, an electromagnetic exchange for relay, which is composed of an electromagnetic exchange such as a crossbar exchange, and the identification information and services of the self-accommodating subscriber. Separate information, etc. from telephone lines;
Subscriptions having signaling equipment for transmitting and receiving signals between exchanges, and service equipment that allows services such as the reservation of incomplete calls and the transmission of messages to the called subscriber to continue to be performed without having to go on-hook and re-dial the handset. In a switching network in which electronic exchanges for subscribers and electronic exchanges for relays coexist, I! A signaling device is provided, and when a subscriber accommodated in the subscriber electromagnetic exchange makes a call, the call line is set so that it always goes through the relay electronic exchange, and the signaling device Upon receiving the subscriber information including the subscriber's identification information and line identification information, the relay electronic exchange uses its own signaling device to inquire of the terminating exchange whether or not it is possible to connect with the terminating subscriber, and if connection is possible, it normally The call line is set up to the incoming exchange according to the procedure described above, and the call line is monitored. If the inquiry results in a connection being impossible, or if the call line monitoring determines that the call cannot be made, the call line is activated to activate its own service equipment. ,
When a subscriber accommodated in the subscriber electronic exchange makes a call, the subscriber electronic exchange is characterized in that it operates in the same manner as the relay electronic exchange.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 is a configuration diagram of a telephone network for explaining an electronic exchange connection system according to an embodiment of the present invention.

In FIG. 1, 1 and 2 are subscriber electronic exchanges having a signaling device and a service device capable of transmitting and receiving various information such as identification information and service information of the subscriber accommodated between the exchanges; 3;
and 4 are subscriber electromagnetic exchanges equipped with signaling devices capable of transmitting and receiving the above-mentioned information between exchanges, 5 and 6 are subscribers accommodated in subscriber electronic exchanges 1 and 2, respectively, and 7 and 8 are subscribers, respectively. Subscribers accommodated in subscriber electromagnetic exchanges 3 and 4; 9 a relay electronic exchange having a signaling device and a service device capable of transmitting and receiving the various information mentioned above between the exchanges; 10 a relay electromagnetic exchange; 11 A telephone line 12 is set up between the subscriber electronic exchange 1 and the relay electronic exchange 9, 12 is a telephone line established between the subscriber electronic exchange 1 and the relay electromagnetic exchange 10, and 13 is a subscriber line. A telephone line set between the electromagnetic exchange 3 and the relay electronic exchange 9, 14 a telephone line established between the relay electronic exchange 9 and the subscriber electronic exchange 2, 15 a relay electronic exchange 9, etc. A telephone line 16 is set between the electromagnetic exchange 4 for subscribers and the relay electromagnetic exchange 10 and the subscriber type.

This is a telephone line set up between the slave exchanges 2. Also, 1
7 is a signal line from the signaling device 1a provided in the subscriber electronic exchange 1, 18 is a signal line from the signaling device 3a provided in the subscriber electromagnetic exchange 3, and 19 is provided in the relay electronic exchange 9. signal line from the signal device 9a, 20
21 is a signal line from the signal device 2a provided in the subscriber electronic exchange 2, 21 is a signal line from the signal device 4a provided in the subscriber electromagnetic exchange 4, and 22 is a signal line 17--
23゜24.25 is a signal network that accommodates 21 and relays the above various information to the target exchange when transmitting and receiving between exchanges,
Each subscriber electronic exchange 1° relay electronic exchange 9.
This is a service device that is provided in the subscriber electronic exchange 2 and has means for notifying one originating subscriber and means for receiving and storing service content requested by the originating subscriber.

Next, a telephone exchange connection system in the telephone network shown in FIG. 1 will be explained.

When the subscriber electronic exchange 1 becomes the originating exchange.

That is, the subscriber 5 accommodated in the subscriber electronic exchange 1
When the subscriber's electronic exchange l receives the subscriber information from the subscriber 5 and sends it to the exchange accommodating the called subscriber via the signal line 17, the signal line 20 or 21, and the signal network 22, (In this case, the subscriber's electronic exchange 2 and the subscriber's electromagnetic exchange 4 are also called terminating exchanges.) Make inquiries.

The terminating exchange 2 or 4 that received the inquiry will provide the information that the terminating subscriber can be connected and the service conditions of the terminating subscriber if the terminating subscriber is in a connectable condition, and the information that the terminating subscriber cannot be connected and the terminating subscriber's service conditions if the terminating subscriber is not in a connectable condition. The service conditions are sent back to the originating exchange (subscriber electronic exchange 1) via the signal line.

When the originating exchange (subscriber electronic exchange 1) receives the information that connection is possible, the terminating exchange uses the link-by-link procedure, which is a normal connection procedure, to transfer the terminating exchange to subscriber electronic exchange 2.
In this case, call lines 11 and 14, or communication lines 12 and 1
6, when the terminating exchange is the subscriber's electromagnetic exchange 4, the call is terminated to the respective terminating exchange via the telephone lines 11 and 15.

After the incoming call connection is completed, the originating exchange 1 (electronic exchange 1 for subscribers) monitors the status of the incoming subscriber through the set telephone line, and if there is a response, it stops monitoring for switching to the service equipment, and thereafter should be treated like a regular telephone.

If the result of the inquiry is that connection is not possible, or as a result of monitoring the above-mentioned call line, it is determined that there is no response from the called subscriber and the call cannot be made, the originating exchange 1 (electronic exchange 1 for subscribers) will be set once. The service control is performed by reconnecting the telephone line to another trunk and controlling the service. That is, the originating exchange 1 (subscriber electronic exchange 1) is the service equipment 11.
23 and control the reception of services such as reservation of calls that have not been completed and services such as sending a message to the called subscriber. Transition. Specifically, the service device 23 continues to reserve incomplete calls from the originating subscriber 5 or to the terminating subscriber even if the subscriber 5 does not once put the handset on the hook and dial a special number again. It accepts requests for services such as messages, and stores the service content. Subscriber exchange 1 is 1
By recognizing that the called subscriber has ended the call or that the absent state has been released, the service content is automatically read out from the service device 23 and transmitted to the called subscriber.

When the subscriber electromagnetic exchange 3 becomes the originating exchange, that is, when the subscriber 7 accommodated in the subscriber electromagnetic exchange 3 makes a call, the relay exchange always acts as the relay electronic exchange 9.
Connect the telephone line 13 using the normal connection procedure so that In addition to connecting the telephone line 13, the signal line 18, ■
9. , the subscriber information including the identification information of the originating subscriber 7 is sent to the relay exchange 9 via the signal line 20 or 21 and the signal network 22, and thereafter the above-mentioned control performed by the subscriber electronic exchange 1 is performed. The relay exchange 9 is made to perform this. That is, the relay exchange 9, which has received the subscriber information from the subscriber 7 via the signal line 18, transmits the subscriber information to the signal line 19.
, signal line 20 or 21, and signal network 22. Inquiries are made to the terminating subscriber's exchange via the terminating subscriber exchange as to whether connection is possible with the terminating subscriber and the services available to the terminating subscriber.

The terminating exchange 2 or 4 that received the inquiry provides information that the terminating subscriber can be connected and the service conditions of the terminating subscriber if the terminating subscriber is in a connectable state, and information that the terminating subscriber cannot be connected and the service of the terminating subscriber if the terminating subscriber is not in a connectable state. Exchange 9 for relaying conditions
is sent back via the above signal line.

When the relay exchange 9 receives the information that connection is possible, the terminating exchange transfers the connection to the subscriber electronic exchange 2 according to the normal connection procedure.
If so, the call is received at the subscriber's electronic exchange 2 via the telephone line 14, and if the terminating exchange is the subscriber's electromagnetic exchange 4, the call is received at the subscriber's electromagnetic exchange 4 via the telephone line 15. After the incoming call connection is completed, the relay exchange fi9 monitors the telephone line, and if there is a response, it stops monitoring and thereafter handles the telephone line in the same way as a normal telephone.

If the result of the inquiry is that connection is not possible, or if it is determined that the call cannot be made as a result of monitoring the call line, the relay exchange 9 reconnects the set call line to another trunk and resumes the service. Take control. Immediately, the relay exchange 9 switches the connection to the service device 24 and shifts to control for accepting services such as reservation of incomplete calls and message transmission to the called subscriber. Specifically, the service device 24 continues to schedule uncompleted calls from the subscriber 7 and to respond to the called subscriber even if the subscriber 5 does not once put the handset on hook and dial a special number again. Accepts requests for services such as message messages, and stores the service contents. When the relay exchange 9 recognizes that the call has been terminated by the called subscriber or that the absent state has been released, the relay exchange 9 automatically reads out the service content from the service device 24 and transmits it to the called subscriber.

In this way, in this embodiment, a signaling device that can send and receive various information between exchanges in addition to the telephone line is added only to the subscriber electromagnetic exchange, and nothing is added to the relay electromagnetic exchange. In addition, the setting of the call line and the sending of the selection signal use the link-by-link procedure without changing the signaling method of the conventional telephone network, and the control for switching the call line once set to another trunk and the accompanying The control of these services was left to the electronic switching equipment.

Therefore, with a simple configuration, even if a subscriber accommodated in the subscriber electromagnetic exchange is busy or absent,
It becomes possible to provide services such as reserving incomplete calls and sending messages to the called subscriber at any time without redialing.

Furthermore, according to this embodiment, since it is known whether or not a connection is possible with the terminating subscriber before the calling station sets up the telephone line, it is possible to eliminate the invalid operation of the terminating subscriber's exchange and the invalid holding of the line. It is well-argued that the telephone network can be constructed more economically, and it is clear that if the terminating exchange is narrower, the telephone network will be more resistant to overload.

In this embodiment, the number of subscriber types is not particularly limited to five, but it goes without saying that the connection control can be performed by the exchange only when a subscriber registered in advance in the exchange makes a call.

〔Effect of the invention〕

As explained above, according to the present invention, in a telephone network where electromagnetic exchanges and electronic exchanges coexist, a simple configuration,
and without changing the signaling system, the reservation of uncompleted calls continues without going on-hook and redialing, regardless of whether the call is made by a subscriber housed in an electronic exchange or an electromagnetic exchange. You can request services such as sending a message after the called subscriber ends the call or cancels the call.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of a telephone network for explaining a telephone exchange connection system according to an embodiment of the present invention. ■, 2: Subscriber electronic exchange, la, 2a, 3a r
4 a + 9 a' signal device, 3, 4: electromagnetic exchange for subscribers, 5, 6, 7.8: subscriber, 9: electronic exchange for relay, 10: electromagnetic exchange for relay, 23° 24. 25:
Service equipment, 22: Signal network. Patent applicant Nippon Telegraph and Telephone Public Corporation, 21, ゛go1. ,,H,,1

Claims (1)

[Claims] (1) Electromagnetic exchanges for subscribers and relay electromagnetic exchanges, which are composed of electromagnetic exchanges such as crossbar exchanges, transmit and receive identification information and service information of self-accommodating subscribers between the exchanges separately from the call line. signaling device. and subscriber electronic exchanges and relay electronic exchanges having service equipment capable of continuing to perform services such as reserving incomplete calls and transmitting messages to the called subscriber without having to take the receiver on-hook and re-dial. In a switching network in which there are a mixture of After setting up a call line and receiving subscriber information including the subscriber's identification information and line identification information from the signaling device, the relay electronic exchange connects the terminating subscriber to the terminating exchange using its own signaling device. If a connection is possible, the call line is set up to the incoming exchange using the normal procedure, and the call line is monitored. If the inquiry results in a connection being impossible, or if the call line is monitored, the call cannot be made. If it is determined that this is the case, the subscriber's own service device is activated, and if a subscriber accommodated in the subscriber's electronic exchange makes a call, the subscriber's electronic exchange operates in the same manner as the relay electronic exchange. A telephone exchange connection system characterized by being configured as follows.