JPS5944831B2 - Incoming call method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a call termination system for a common control automatic exchange.

Generally, in an automatic switching system, the call receiving system is such that the caller or caller 15 receives the called telephone number from the originating station and connects the call to the subscriber corresponding to the telephone number.

However, recently, various new services have been provided, and if a subscriber requests forwarding in advance by operating the telephone, incoming calls to that subscriber will be automatically forwarded to the requested forwarding destination. An example of such services is services that provide such services. A typical example of this is the absence information service, and an example of a conventional system is shown in FIG. In the figure, SUB is the subscriber telephone, ML is the main link of the exchange, ICT-A is the incoming trunk, 25^ is another station, in this example, the voice service station, O
GT is the outgoing trunk, 05 is the originating center, AISCONT
is the automatic notification service controller, M is the common control device (
(hereinafter referred to as marker), CON-A is the outgoing trunk OGT
CON30-B is the connector between the outgoing center OS and the outgoing center OS, and the automatic notification service controller AISCO.
NT connector, CON-C is the connector between automatic notification service controller AISCONT and marker M, NG
is a number group, NGC is a number group connector,
TNG is a trunk number group, TNGC is a trunk number group connector, and USM is a memory for absence guidance service. The absentee guidance service is a well-known method,
Devices related to registration, request, and cancellation are omitted. It is now assumed that subscriber SUB has previously requested the absence notification service. In this case, the information of the subscriber SUB is stored in the absence guidance service memory USM. When an incoming call connection request is received from the incoming trunk ICT-A to the subscriber SUB, the marker M learns the called number, that is, the telephone number of the subscriber SUB. Marker M also connects trunk number group TN through trunk number group connector TNGC.
G and receives the accommodation position information on the main link ML of the incoming trunk ICT-A. Next, the marker M activates the number group NG through the number group connector NGC, transfers the telephone number to the number group NG, translates it into accommodation location information on the main link ML of the subscriber SUB in the number group NG, and transmits the telephone number to the marker M. Please reply to M. At the same time, the marker M receives this information through the number group NG since the subscriber SUB is currently requesting an absentee guidance service and the information is stored in the absentee guidance service memory USM. Based on the information, marker M activates automatic notification service controller AIMCONT through connector CON-C, and transfers subscriber SUB's accommodation location information and absence notification requesting information. Based on the information, the automatic notification service controller AISCONT selectively acquires the originating center 0S through the connector CON-B, and subsequently selectively acquires the outgoing trunk 0GT through the connector CON-A. The outgoing trunk 0GT is connected to the voice service station, and at the same time activates the station, the accommodation position information on the main link ML of the outgoing trunk 0GT is sent to the connector CON-A - transmission center 0S - connector CON-B - automatic notification service controller. AISCONT-Connector CON-C-
Transfer to marker M via marker M. Marker M uses this information to connect incoming trunk ICT-A to trunk 0GT through main link ML and restore it. A number for selecting a voice service device is sent from the originating center OS, and recovery is performed. That is, the caller incoming to the incoming trunk ICT-A is connected to the voice service station through the outgoing trunk 0GT as described above, and receives a voice service indicating that the caller is absent. That is, if a subscriber SUB has previously requested the absence notification service, all incoming calls to that subscriber SUB are automatically transferred to the voice service station. However, in the above-described incoming call system, even if the subscriber terminal is equipped with a device that can automatically answer or automatically record the caller's content, such as a facsimile receiver, the call will be forwarded, and even if the subscriber is not present, the call will be forwarded. Although automatic recording is possible, there was a drawback that it was impossible.

In order to eliminate these drawbacks, the present invention is designed so that when a call is received from a specific incoming trunk to a subscriber requesting transfer, the call is not forwarded and the call is connected to that subscriber. explain.

FIG. 2 shows an embodiment of the present invention, in which a facsimile receiver (generally called a transmitter/receiver, but in the explanation of the present invention, the transmitter side is not involved, so it is called a receiver) is added to the subscriber terminal. Let me explain. In the figure, FAX is a facsimile receiver, ICT-B is a special input trunk, and other symbols are the same as in FIG. Recently, facsimile receivers are generally equipped with an automatic reception function, which means that they can receive calls automatically without the need for someone to be there. Furthermore, when a caller sends a facsimile transmission, it is a known technique that the exchange identifies the facsimile and connects the caller through a line different from the line to which a regular telephone is connected. Here, the incoming trunk connected in response to a facsimile request is assumed to be a specific incoming trunk ICT-B. Therefore, the general telephone is connected to the incoming trunk 1CT-A. This incoming trunk ICT-
If the subscriber SUB is requesting the absentee notification service, the incoming call from A receives the voice service using the same connection as in the conventional example shown in FIG. 1. However, in the case of a facsimile reception connection from the specific incoming trunk ICT-B to the subscriber SUB, the following connection is made. When a call is received from a specific trunk CT-B, it passes through an input register (not shown) and goes to marker M.
receives the telephone number of subscriber SUB. Marker M activates number group NG through number group connector NGC and transfers the telephone number. In the number group NG, the telephone number is translated into accommodation location information on the main link ML of the subscriber SUB and sent back to the marker M, and since the absence guidance service is being requested, the absence guidance service memory U is
Similar to the conventional method, information to that effect is also returned from the SM. On the other hand, marker M has trunk number group T
The trunk number group TNG is captured through the NGC, and the accommodation position information on the main link ML of the specific incoming trunk ICT-B is received, but at the same time, the specific incoming trunk CT-B
It also receives information that the call is specific, ie, that it is a facsimile call. This can be easily realized because the trunk number group TNG has a function that can create not only trunk location information but also trunk type information as needed. Therefore, marker M does not start the automatic notification service controller AISCONT based on that information.
As with general incoming calls, the specific incoming trunk ICT-B is connected to the subscriber SUB or the attached facsimile receiver FAX through the main link ML. Thereafter, information from the facsimile transmitting side is transmitted to the facsimile receiver FAX, and the facsimile receiver FAX is activated to enable automatic facsimile reception. As explained above, according to the present invention, even when a subscriber requests transfer of an absentee information service, etc.,
It is possible to connect to facsimile receivers, automatic answering devices, automatic recording devices, etc. attached to the subscriber, providing great convenience in terms of service.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing an example of a conventional absentee guidance service system, and FIG. 2 is a diagram showing an embodiment of the present invention. SUB...Subscriber, ML...Main link, ICT-A...Incoming trunk, ICT-B...
...Specified entry trunk, FAX...Fax receiver, A...Voice service station, 0GT.
...outgoing trunk, 0S...outgoing center,
AISCONT: Patrol notification service controller, M: Marker, TNG: Trunk number group, NG: Number group,
USM・・・・・・Memory for absentee guidance service.

Claims (1)

[Claims] 1. If a subscriber requests forwarding in advance, a common control automatic switching system that has the function of forwarding an incoming call to that subscriber to a different forwarding destination than that of the subscriber, transfers the incoming call from a specific incoming trunk to the forwarding destination. When an incoming connection is made to a subscriber requesting transfer, the common control unit identifies that the incoming connection is from the specified incoming trunk to the subscriber, and allows the incoming connection to be made to the subscriber without making a transfer connection. An incoming call method characterized by: