JPH02271769A - Conference trunk selection system - Google Patents

Abstract

PURPOSE:To reduce a busy rate of an inter-station relay line by allowing an exchange receiving a conference connection service request to select a conference trunk of an exchange station accommodating most of conference participants with priority. CONSTITUTION:When a conference connection service is requested, destination information of a called party is received by an exchange. A central processing unit of the exchange decides the exchange accommodating most of conference participants from the received information. When the exchange is its own station, the idle conference trunk of its own station is checked to apply conference call processing. In the case of the exchange of the other station, a conference invitation request signal is sent from its own station to the other station. The central processing unit of the other station selects a conference trunk and when an idle trunk exists, a request acceptance enable signal is returned and when no idle trunk exists, the request acceptance disable signal is returned. In the case of the request acceptance enable, the destination information is sent succeedingly via a conference trunk to await the opening of the conference. In the case of absence of the idle trunk, the presence of the succeeding selection station is discriminated, and in the case of presence, the succeeding selection station is decided and in the case of absence, the busy processing is applied.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a conference trunk selection scheme.

[Conventional technology]

Conventionally, when a subscriber requests a conference connection in a switching network consisting of a plurality of exchanges, the conference trunk of the exchange accommodating the conference convener is selected to provide the conference connection service.

[Problem to be solved by the invention]

In the conventional conference trunk selection method described above, the conference trunk of the exchange where the conference convenor is accommodated is selected. Since the number of trunk lines corresponding to the number of subscribers is used, there is a disadvantage that the busy rate of trunk lines becomes high, leading to a decline in service to other subscribers.

[Means to solve the problem]

The conference trunk selection method of the present invention preferentially selects the conference trunk of the exchange accommodating the largest number of conference participants when a subscriber requests a conference connection service in a switching network consisting of a plurality of exchanges. It is characterized by

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a processing procedure diagram in an exchange showing an embodiment of the conference trunk selection method of the present invention.

When a conference organizer requests a conference connection service by dialing a special number, etc., the exchange accommodating the conference organizer receives the called party's destination information using a generally known method (step 1).
,2). Next, the central processing unit of this exchange determines the exchange that accommodates the largest number of conference participants from the received called party destination information (step 3). Step 4), when this exchange calls your own office, selects the conference trunk of your own office (step 9), checks if it is free (step 10), and if there is a free trunk, processes the conference call using a known method. (Step 11).

When the other station's exchange is determined in step 4, the own exchange sends a conference convocation request signal to the other station's exchange (step 5). In the communication tfA machine of the other station, the central processing unit selects a conference trunk, and if there is an empty trunk, returns a request acceptance signal, and if there is no empty trunk, returns a request unacceptable signal (step 6). If the request can be accepted, the destination information is sent via the conference trunk (step 7), and the process waits for the conference to be held (step 8). If there is no free trunk in step 10, or if a transmission not accepted signal is received in step 6, the central processing unit of the own station determines whether there is a next selected station (step 12), and if there is, step 3). The next selected station is determined, and if there is no station, busy processing is performed (step 13).

In this way, in this embodiment, the central processing unit of each station performs the necessary processing using software.

〔Effect of the invention〕

As explained above, the present invention reduces the busy rate of inter-office trunk lines by allowing the exchange that receives a conference connection service request to prioritize and select the conference trunk of the exchange that accommodates the largest number of conference participants. It has the effect of reducing Furthermore, since conference trunks other than the local exchange are also selected, the busy rate of the conference trunk itself can be reduced.

[Brief explanation of drawings]

FIG. 1 is a processing procedure diagram in an exchange showing an embodiment of the conference trunk selection method of the present invention.

Claims (1)

[Claims] Conference trunk selection characterized in that in a switching network consisting of a plurality of exchanges, when a subscriber requests a conference connection service, the conference trunk of the exchange accommodating the largest number of participants in the conference is selected with priority. method.