JPH0326194A - Isdn exchange - Google Patents

Abstract

PURPOSE:To execute a load distributed incoming for each transmitting person area by providing an originating person number table and an extension condition information table, identifying an ACD group with the originating person number of an ISDN protocol and distributing an incoming with the extension condition in the ACD group. CONSTITUTION:Originating number tables 11a and 11b store the ACD group numbers of the originating person, respectively. Extension number tables 12a and 12b indicate the condition of a specific extension number group provided corresponding to the ACD group numbers stored in the origination person number tables 11a and 11b. When the incoming from the ISDN is received, the information element of the originating person number contained in the incoming signal is extracted, and the originating number tables are retrieved. When the number of the originating person starts with, for example, '045', the extension condition table 12a to the originating number table 11a is selected, the condition of each extension is retrieved, and incoming is executed to the unoccupied extension. In such a way, by analyzing the originating person number of the ISDN protocol at the time of the incoming by means of a call connection control part 3 and retrieving the ACD group, the load distributed incoming according to the originating person number can be executed.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to ISDN switching equipment, such as electronic switching equipment, key telephone equipment, and Centrex switching equipment.

BACKGROUND OF THE INVENTION FIG. 3 shows an example of an extension status table 5a that a conventional electronic switching device manages in a memory as call control information.

When a call arrives from the central office line, the usage status of the extension is checked, and if the extension is free (acceptable), the call is received on the extension.

If the call is busy (cannot be accepted), an unoccupied extension within the representative group or automatic call distribution (hereinafter abbreviated as ACD) group is supplemented to receive the call, and by monitoring the extension status, it is possible to receive the call in a load-balanced manner.

Problems to be Solved by the Invention However, in the above-mentioned conventional ISDN switching device, the AC
Since D groups are managed on a per-office line trunk basis, there is a problem in that it is not possible to manage groups for each region of callers and distribute incoming calls.

The present invention solves these conventional problems,
The object of the present invention is to provide an excellent ISDN switching device that can receive calls by distributing the load among groups of callers in each region.

Means for Solving the Problems In order to achieve the above objects, the present invention provides I S l) N
means for extracting and identifying the calling number within the protocol;
The caller number table that monitors the ACD group and the AC
It is equipped with an extension status information table managed for each D group.

Effects The present invention has the above-mentioned configuration, which enables the ACD group to be identified by the caller number of the ISDN protocol and the incoming calls to be distributed based on the extension status within this ACD group, so that it is possible to load-balance incoming calls for each caller area. has.

Embodiment FIGS. 1 and 2 show an SDN switching device according to an embodiment of the present invention.

In Fig. 1, la and lb are respectively office line l/rank for accommodating ISDN etc., 2a and 2b are extension line circuits for accommodating 9 telephones and terminals, respectively, and 3 is shown in Fig. 3. ISDN
This is a call connection control unit that connects communication paths by making and receiving calls to and from telephones and terminals.

In FIG. 2, 11a. 1lb each has a caller number table in which the ACD group number of the caller is stored;
12a. , 12b are respectively the caller number table 11
a. This is a table that shows the status of a specific extension number group provided corresponding to the ACD group number stored in 1lb. Each extension is in an idle state "O" or a busy state "O".
This is an extension status table that stores data indicating whether the status is "1" or not.

Next, the operation of the above embodiment will be explained. In the above embodiment, when there is an incoming call from rsDN, this incoming signal 1
The information element of the included caller number is extracted and the caller number table is searched. For example, if the caller's number is "O4"
5", select the extension status table 1.2a for the caller number table lla to search the status of each extension, for example, if the extension is 1 1. 1 2 is empty, this extension to receive a call.

In this way, according to the above embodiment, the call connection control unit 3 analyzes the caller number of the ISDN protocol when receiving a call, and
Searching for the D group has the advantage that it is possible to load-balance incoming calls according to the caller number.

Effects of the Invention As described above, the present invention realizes call dispersion by grouping ISDN caller numbers, and has the effect that call dispersion can be performed for each calling area.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an ISDN switching device according to an embodiment of the present invention, FIG. 2 is an explanatory diagram showing an ISDN switching device table in FIG. 1, and FIG. 3 is an explanatory diagram showing an extension management table in a conventional rsDN switching device. FIG. la, lb... central office line trunk, 2a. 2b... Extension side line circuit, 3... Call connection control unit, 11a,
1lb...Caller number table, 12a, 12b...
- Extension status table. Figure 1 N2 Figure

Claims (1)

[Scope of Claims] An interface for notifying an ISDN caller number; means for extracting and identifying a caller number from an incoming message from the ISDN; An ISDN switching device equipped with means for managing the usage status of terminals and selectively receiving calls.