JPH03136596A - System for selecting minimum charge offering line in private exchange network - Google Patents

Abstract

PURPOSE:To device the above system such that charge data is revised with less cost than that by a conventional system by inquiring an electric communication company number offering the minimum talking charge from a database in the case of making a call to a party at the outside of a private exchange network, obtaining the electric communication company number offering the minimum talking charge, adding the number information to a dial number and dialing the resulting dial number. CONSTITUTION:Numbers of electric communication company offering the minimum talking charge are stored in an electric communication company charge table 11. When a controller 24 of an exchange 20 detects a call of a subscriber terminal equipment 30 via a line circuit 25, dial information of the subscriber terminal equipment 30 is read and when the call is a call to the outside of the network, a retrieval request is sent to a database 10 through a trunk 21, the electric communication company number offering the minimum talking charge is received from the database through the trunk 21, the electric communication company number is added to dial information and the resulting information is sent to an external line via a sender 22 and the trunk 21.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a lowest call charge line selection system in a private switched network.

[Conventional technology]

Conventionally, when making an off-network call from within a private switched network, the lowest call charge line selection method selects the route of the telecommunications carrier with the lowest call charge depending on the connection route to the other party. Telecommunications carrier rate data was stored in the exchange.

[Problem to be solved by the invention]

With the conventional lowest call charge line selection method described above, when a new telecommunications carrier is added or the charges are revised, the charge data of each exchange must be changed, which is costly. There are drawbacks.

[Means to solve the problem]

The lowest call charge line selection method in a private exchange network of the present invention is provided with a database storing rate data for each route of telecommunications carriers connected to the private exchange network, and each exchange, when a call is made outside the private exchange network, The present invention is characterized by comprising means for inquiring the carrier number of the telecommunications carrier with the lowest call charge from the database, obtaining the cheapest telecommunications carrier number from the database, adding it to the dialed number, and making a call.

〔Example〕

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

FIG. 1 is a block diagram of a network configuration showing an embodiment of the present invention;
2 (a>, (b) are diagrams showing an example of the contents of the originating area table and the terminating area table in the database in FIG. 1, and FIG. 3 is a flowchart for explaining the operation of the exchange in FIG. 1. , FIG. 4 is a flowchart for explaining the operation of the database in FIG. 1.

In FIG. 1, a database 10 includes a communication control section 13. The control device 12 is equipped with a rate table 11 of a telecommunications carrier.

The exchange 20 accommodates subscriber terminals 30 via line circuits 25 and trunks 21 . Sender 22 that sends dial information. A main switch 23 and a control device 24 are provided. The trunk 21 also accommodates a line to the database and an outside line.

As shown in Figure 2 (a) and (b), the contents of the telecommunications carrier charge table 11 consist of two parts: a calling area table and a receiving area table, and the telecommunications carrier number in the receiving area table is This is a predetermined number for each communication carrier. This table stores the number of the telecommunications carrier with the lowest rate for the corresponding recipient.

Next, the operation of this embodiment will be explained with reference to FIGS. 1 to 4.

First, the control device 24 of the exchange 20 detects a call from the subscriber terminal 30 via the line circuit 20 (operation procedure 1 in FIG. 3).Next, the control device 24 detects the dial information of the subscriber terminal 30. Read (operation step 2), determine whether the dial information is an outside call (operation step 3), and if it is an outside call, send a search request to the database 10 through the trunk 21 (operation step 4).Data sent at this time (Transmission data) is the caller's telephone number and the dial information (recipient number) sent from the subscriber terminal.Next, the database 10
The lowest rate carrier number is received from the sender 22 through the trunk 21 (operation step 5), the carrier number is added to the dialing information (operation step 6), and the sender 22. It is sent to an outside line via the trunk 21.

The operation of the database will be explained using FIG.

First, when a search request for a carrier number with the lowest call charge is received from the exchange 10 through the communication control unit 13 along with the data (operation procedure 1 in FIG. 4), the control unit 12 uses the caller number of the transmitted data as a key. , searches the originating area table (operation procedure 2). As a result, the address of the destination area table is obtained, and the destination area table is searched using the destination number of the transmitted data as a key (operation procedure 3).

As a result of your search, you will get the carrier number with the lowest call rate. The communication carrier number is transmitted to the exchange 20 through the communication control section 13 (operation procedure 4).

〔Effect of the invention〕

As explained above, the present invention has the advantage that changing the fee data requires no additional costs compared to the conventional method, since changing the fee data only needs to be done in one database.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a network configuration showing an embodiment of the present invention;
2(a) and 2(b) are diagrams showing examples of the contents of the originating area table and the terminating area table in the database in FIG. 1, and FIG. 3 is a flowchart for explaining the operation of the exchange in FIG. 1. , FIG. 4 is a flowchart for explaining the operation of the database in FIG. 1. DESCRIPTION OF SYMBOLS 10...Database, 11...Telecommunication carrier database, 12...Control device, 13...Communication control unit,
20... Switchboard, 21... Trunk, 22... Sender, 23... Main switch, 24... Control device, 2
5... Line circuit, 30... Subscriber terminal.

Claims (1)

[Claims] Equipped with a database that stores rate data for each route of telecommunications carriers connected to the private exchange network, each exchange is equipped with a database that stores the rate data for each route of telecommunications carriers connected to the private exchange network, and when a call is made outside the private exchange network, the database stores the data of the telecommunications carrier with the lowest call rate. 1. A lowest call charge line selection method in a private exchange network, characterized in that the method includes means for inquiring the telephone number of a telecommunications carrier, obtaining the cheapest telecommunications carrier number from the database, adding it to the dialed number, and making a call.