JP2693476B2 - Trunk service method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Industrial field of use) The present invention relates to a trunk incoming call service system capable of effectively providing a service function provided in an exchange even for a trunk incoming call. .

(Prior Art) Recently, the service functions of exchanges have been enhanced. However, the provision of the service is generally limited to the extension terminal connected to the exchange. That is, the central office line connected to the exchange is not generally divided into an information channel and a control channel as seen in the extension line. Therefore, the trunk line (network) for the trunk incoming call to the exchange.
Cannot automatically add caller identification information, and it is impossible for the exchange to develop a service using this caller identification information.

However, with the advancement of communication networks, recently, it has been attempted to separate an office line (communication network) into an information channel and a control channel and send various kinds of information using the control channel. For example, caller identification information may be automatically added to call information by the network and sent to the exchange through the control channel, or intentional information from the user may be sent through the control channel. Being tried.

However, in developing various services in the exchange, there is a problem in how to utilize the control channel to develop services.

(Problems to be Solved by the Invention) As described above, in the conventional exchange system, the range in which the service functions provided in the exchange can be provided is limited to the extension terminal, and it is difficult to answer trunk incoming calls. There was a problem as to whether or not to provide the service.

The present invention has been made in view of such circumstances,
It is an object of the present invention to provide a trunk termination service system capable of effectively providing a service to a trunk termination call in an exchange connected to a communication network having an information channel and a control channel.

[Structure of the Invention] (Means for Solving Problems) A trunk termination service system according to the present invention includes an information channel and a control channel, and is a station configured to send caller identification information through the control channel. In the exchange connected to the line, it is detected whether or not the caller identification information is present in the message sent through the control channel for the trunk incoming call originated in the switch, and the caller is included in the message. When the identification information is present, a service equivalent to the extension can be provided to the trunk incoming call.

In addition, after determining whether the detected caller identification information is registered in advance, the service corresponding to the extension is permitted, and further, the service use record to which the caller identification information is added is left as a history. It is characterized in that the above service is provided.

(Operation) According to the present invention, when a trunk incoming call occurs in the exchange, it is detected whether or not the caller identification information is present in the message sent through the control channel at that time. When the caller identification information is present in the message, control (permission / restriction) on whether or not to provide a service equivalent to the extension to the trunk incoming call is performed. As a result, not only the extension terminal accommodated in the exchange but also the service line provided in the exchange can be provided not only from the extension line, but also the service function in the exchange can be enhanced.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic configuration diagram of an exchange system to which a trunk termination service system according to an embodiment of the present invention is applied, in which 1 is an exchange main body and 2 is a central control unit. The exchange main body 1 is connected to extension terminals 4a and 4n via extension interfaces 3a to 3n, respectively, and is also connected to station lines via station trunks 5a to 5m. A telephone service device 6 such as a voice mail device is connected to the exchange main body 1.

Here, the above-mentioned station line is provided with an information channel and a control channel, and the communication network constituted by this station line automatically generates the caller identification information in response to the occurrence of a call, and controls this by the control It has the ability to send over channels.

Then, the central control unit 2 follows the control program stored in the storage unit 7 and the extension interface 3
Various control information is transmitted / received to / from a, 3b, office line trunks 5a, 5m, and telephone service device 6 to control connection of a telephone line via the exchange main body 1. And extension terminals 4a, 4n
Request a telephone service, the extension terminal 4a,
The extension interfaces 3a and 3m accommodating .about.4b are connected to the telephone service device 6 to provide the service.

Here, the central control unit 2 includes the trunk line trunk 5
When an incoming call to a, ~ 5m occurs, the caller identification information sent via the control channel is detected, and the call is provided to control whether or not the service equivalent to the extension is provided for this trunk incoming. A person information detection unit 8 is provided.

The caller information detection unit 8 is configured to include a caller identifier detection unit 11, a caller identifier registration table 12, a trunk service control unit 13, and a history registration unit 14 as shown in the configuration example of FIG. . The caller identifier detection unit 11 is a trunk line trunk.
When an incoming call to 5a, 5m occurs, the caller identifier (calling number information element and calling subaddress information element) as the caller identification information is included in the incoming message sent through the control channel of the station line. It is to detect whether or not it is included.

The caller identification information may be detected from the information contained in the user / user information element in the incoming message sent via the control channel. At this time, the cryptographic information for confirming the authenticity of the sender may be detected from the user / user information.

In this way, when the caller identifier detection unit 11 detects the caller identifier, the caller identifier registration table 12 is searched to check whether or not the caller identifier is registered in advance, and the trunk incoming call is received. It is controlled whether or not the service equivalent to the extension for the call is permitted.

Needless to say, if the caller identifier is not included in the incoming message, the service corresponding to the extension for the incoming call of the trunk is prohibited. Even when the caller identifier is detected, if the caller identifier is not registered in the caller identifier registration table 12, it is prohibited to provide a service equivalent to the extension for the incoming call of the trunk, or the service is provided. Content restrictions may occur.

Then, when it is confirmed that the detected caller identifier is registered in the caller registration table 12, the trunk service control unit 13 is activated. When the trunk service control unit 13 is activated, a service equivalent to the extension, that is, a service equivalent to the service for the extension is provided to the incoming trunk. History record registration section
14 is activated, and the usage history for the service is stored in the incoming call history storage unit 9 of the storage device 7 together with the caller identification information.

For example, as shown in FIG. 3, the incoming call history storage unit 9 is implemented by writing a sender identifier, service content, service time, etc. for each provided service.
The history information stored in the incoming call history storage unit 9 is used, for example, for billing the service user from the communication network.

As described above, in the present switching system, when a trunk incoming call from the communication network consisting of the information channel and the control channel occurs, the incoming call message sent through the control channel includes the caller identification information. Whether or not it is detected. When the caller identification information is included, provision of a service equivalent to the extension is permitted for the trunk incoming call according to the information. Therefore, not only the extension terminal accommodated in the exchange but also the external terminal connected to the exchange through the office line can receive the service function provided in the exchange.

Moreover, the exchange side can know the caller who receives the service from the caller identification information, so that the service can be charged effectively. Further, it becomes possible to specify the user who can provide the service, so that the unauthorized use of the service function can be prevented and the effective service can be provided. In other words, it becomes possible to effectively enhance the service function.

Note that the present invention is not limited to the above-described embodiment. For example, as the service function corresponding to the extension, various conventionally proposed service functions can be used as appropriate. Further, the method of detecting the caller information from the control channel when the trunk is received is not particularly limited. In addition, the present invention can be variously modified and implemented without departing from the gist thereof.

[Effects of the Invention] As described above, according to the present invention, it is possible to effectively provide a service equivalent to an extension for a trunk incoming from a central line, and effectively enhance the service function thereof. It is possible to obtain a great effect in practical use.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a schematic configuration diagram of an exchange system configured by applying the embodiment system,
FIG. 2 is a block diagram of a caller information detection unit showing a flow of service control for incoming trunks, and FIG. 3 is a diagram showing an example of storing history information for service provision. 1 ... Exchanger main body, 2 ... Central control unit, 3a, 3n ...
Extension interface, 5a, ~ 5m …… Station trunk, 6
...... Telephone service device, 8 ...... Caller information detector, 11 ...
... Caller identifier detection unit, 12 ... Caller identifier registration table, 13 ... Trunk service control unit, 14 ... History registration unit.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP 58-182362 (JP, A) JP 1-235454 (JP, A) JP 1-137760 (JP, A)

Claims (1)

(57) [Claims] 1. A station which accommodates a plurality of extension terminals and a telephone service device having a function of providing a telephone service for a predetermined extension to these extension terminals, and which comprises an information channel and a control channel. In a private branch exchange system connected to an external communication network via a line, when an incoming call arrives from the external communication network via a station line, caller identification information is included in a message arriving via the control channel. Detecting means for detecting whether or not the message exists, and whether or not the detected caller identifying information is registered in advance when the detecting means detects the existence of the caller identifying information in the message. If the caller identification information is registered by the determining means, the station line from which the incoming call arrives is determined by the telephone service. Connecting to the service device and performing control for providing a telephone service for extension to the outside caller using the telephone service device, and a type of extension telephone service provided by this control means. And the start time and end time of the service, the caller identification information is added to the use record information to create history information, and the history information is stored in the storage unit as information for billing the external sender. And a history information registering means for storing the trunk incoming service.