JPH04233364A - Isdn exchange - Google Patents

Abstract

PURPOSE:To request the additional service by utilizing the same procedure by constituting the exchange so that an operator requests the service being equal to a public network additional service without being aware of an extension and a line wire. CONSTITUTION:A protocol processing part 4 executes a processing of an ISDN protocol and informs it as a primitive to a call control processing part 3 and processes it. The processing part 3 converts the primitive related to an additional service to a service primitive, and informs it to an additional service processing part 2. The processing part 2 executes a decision of the service primitive, and executes a request to the processing part 3 corresponding thereto. In this case, the processing part 2 gives an extension service to extension terminals 5, 6 connected to an extension by a procedure of a public network additional service, and executes a request of the additional service. In such a state, whether the service is for the extension or for the line wire is decided, and an operator can request the additional service by using the procedure of the public network additional service without being aware of the line wire and the extension.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to ISDN exchanges, and more particularly to supplementary services in ISDN exchanges.

0002

[Background Art] The ISDN public network has public network supplementary services such as call forwarding, three-party calling, call waiting, and call forwarding services. is used to provide the information to ISDN exchanges. On the other hand, the ISDN exchange provides an extension service similar to the public network supplementary service to the connected ISDN extension terminal using a unique procedure different from the public network supplementary service procedure.

0003

[Problem to be Solved by the Invention] However, if the procedures for public network supplementary services and extension services are different, operators of extension terminals may have to be conscious of whether the service is an extension or an outside line, even if the service is similar. The problem was that it had to be used.

[0004] The present invention provides an ISDN exchange that allows an operator to use public network supplementary services and extension services without being aware of whether the call is an extension or an outside line.

[0005]

[Means for Solving the Problems] The present invention provides an extension service providing function that provides an extension service to an extension terminal in the same procedure as the public network additional service provided by the ISDN public network, and an additional service of the ISDN public network. It has a public network supplementary service request function that requests additional service, and a judgment function that determines whether the service from the extension terminal is for the internal line or an external line.If the service is for the internal line, the ISDN public network provides it. IS is characterized in that an extension service is provided using the same procedure as for an additional service, and for an external line, an additional service is requested using the procedure provided by the ISDN public network.
The above problem is solved by a DN exchange.

[0006]

[Operation] The ISDN exchange provides extension services to extension terminals connected to extension lines using the public network supplementary service procedure, and requests supplementary services using the public network supplementary service procedure. In addition, it determines whether the service requested by the extension terminal is for an internal line or an external line, and if the service is for an internal line, the extension service is provided, and if the service is for an external line, the procedures for public network additional services are performed. to request additional services.

[0007]

Embodiments Hereinafter, embodiments of the present invention will be explained based on the drawings.

FIG. 1 is a block diagram showing the configuration of an ISDN exchange according to the present invention, FIG. 2 is a sequence diagram when transferring to an extension line during communication, and FIG. 3 is a sequence diagram when transferring to an outside line.

In FIG. 1, reference numeral 1 denotes an ISDN exchange, and the ISDN exchange 1 has an additional service processing section 2, a call control processing section 3, and a protocol processing section 4. Further, the ISDN exchange 1 is connected to an ISDN public network 7 and has a plurality of ISDN extension terminals 5 and 6 as extension terminals.

In the ISDN exchange 1, the protocol processing section 4 processes the ISDN protocol, notifies the call control processing section 3 as a primitive, and processes the primitive from the call control processing section 3. The call control processing section 3 converts primitives related to supplementary services into service primitives, and notifies the supplementary service processing section 2 of the service primitives. The supplementary service processing unit 2 determines the service primitive and requests the call control processing unit 3 to perform the corresponding processing. The call control processing unit 3 receives a request from the additional service processing unit 2.
execute it.

[0011] The additional service processing section 2 also provides extension services to the extension terminals 5 and 6 connected to the extension in the same procedure as the public network additional service, and provides the extension service to the extension terminals 5 and 6 connected to the extension. Request additional services using the following procedure. Also, the number in the message in the procedure for the additional service requested from the extension terminals 5, 6 determines whether the service requested by the extension terminals 5, 6 is for the extension terminals 5, 6 or for an outside line. mosquito,
Alternatively, it is determined whether the message that enables the activation of additional services by the ISDN extension terminal is from the ISDN public network or from within the ISDN exchange 1,
If it is for an internal line, the extension service is provided, and if it is for an external line, the additional service is requested using the public network supplementary service procedure.

Next, an example of transfer during communication will be explained with reference to sequence diagrams shown in FIGS. 2 and 3. In FIG. 2, it is assumed that the extension terminal 5 is currently communicating with an outside line. In response to a request for transfer during communication from the extension terminal 5, the ISDN exchange 1 places the extension terminal 5 on hold. After that, SET from extension terminal 5
It is determined whether the called number of the UP is an extension or an outside line, and if it is an extension, the call forwarding service is performed using the same procedure as the public network supplementary service. If it is an outside line, the sequence follows A in FIG. 3 and a request for transfer during communication is made to the ISDN public network as shown in FIG. This allows I.S.D.
The call between the N exchange 1 and the ISDN public network 7 is put on hold. After that, I changed the SETUP from extension terminal 5 that I had saved.
It is sent to the SDN public network 7. C from ISDN public network 7
ALLPR OC means that the state of the extension terminal 5 and the ISDN public network has been matched. Thereafter, according to the procedures of the ISDN public network 7, the communication transfer service is provided.

Although an example of transfer during communication has been described here, the present ISDN exchange 1 can also provide services such as three-party communication, call waiting, and call transfer services.

[0014]

According to the present invention, an operator of an extension terminal can receive services through the same procedure without being aware of the extension or outside line.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an ISDN exchange according to the present invention.

FIG. 2 is a sequence diagram when transferring an extension during communication.

FIG. 3 is a sequence diagram when transferring to an outside line.

[Explanation of symbols]

1 ISDN exchange 2 Additional service processing unit 3 Call control processing unit 4 Protocol processing section 5 ISDN extension terminal 6 ISDN extension terminal 7 ISDN public network

Claims (1)

[Claims] Claim 1: An extension service providing function that provides an extension service to an extension terminal using the same procedure as the public network supplementary service provided by the ISDN public network, and a public network supplementary service request that requests the supplementary service of the ISDN public network. function and a judgment function that determines whether the service from the extension terminal is for an internal line or an external line. service, and if it is an outside line, ISD
An ISDN exchange characterized in that requests for additional services are made using procedures provided by the N public network.