JPH01190064A - Private branch exchange - Google Patents

Abstract

PURPOSE:To fairly select a telecommunication enterprise by providing a telecommunication enterprise-wise utilization condition storage circuit in a storage device and selecting the telecommunication enterprise in a least utilization condition by a telecommunication enterprise selection means when the charges of plural telecommunication enterprises for the telephone number of an opponent are same and reasonable. CONSTITUTION:A call detection means 51 detects the call of an extension terminal 11. Next, a dial information reading means 52 reads the dial information of the extension terminal 11 and discriminates whether or not the dial information is a long distance call. The telecommunication enterprise is selected by a long distance number-wise telecommunication enterprise storage circuit 61 in case of the long distance call. The telecommunication enterprise of a least accumulated charge out of the telecommunication enterprises selected by a telecommunication enterprise-wise accumulated charge storage circuit 62 when the telecommunication enterprise to be selected is two or more. The call charge of the telecommunication enterprise selected by the telecommunication enterprise-wise accumulated charge storage circuit 62 is added after the completion of the call. Consequently, the telecommunication enterprise can be fairly selected.

Description

[Detailed description of the invention] [Industrial application field] INDUSTRIAL APPLICATION This invention is utilized for the private branch exchange of telephone communication.

In particular, it relates to least cost routing means.

〔overview〕

The present invention uses a private branch exchange to fairly select the telecommunications carrier with the least usage status when multiple telecommunications carriers have the same charges and lower rates for the other party's telephone number. This allows you to select.

[Conventional technology]

Conventionally, private branch exchanges have been designed to select only a specific predetermined telecommunications carrier, even if multiple telecommunications carriers have the same low charges for the other party's telephone number.

[Problem that the invention seeks to solve]

However, with such conventional private branch exchanges, even if multiple telecommunications carriers have the same charges and lower rates for the other party's telephone number, only a specific predetermined telecommunications carrier is selected. There was a drawback that it was not possible to select a telecommunications carrier fairly.

The present invention solves the above-mentioned drawbacks, and aims to provide a private branch exchange that allows fair selection of telecommunications carriers.

[Means for solving problems]

In the present invention, the storage device includes a telecommunications carrier storage circuit for each area number that stores a table for selecting a telecommunications carrier based on low charges, and an additional dial information storage circuit for each telecommunications carrier. The control device selects a telecommunications carrier with a low rate based on the dialing information input from the line circuit and the contents of the storage device, and supplies this dialing information and additional dialing information to the vacant central office line trunk. In a private branch exchange including selection means,
The storage device includes a usage state storage circuit for each telecommunications carrier, and the telecommunications carrier selection means selects the usage state storage circuit for each telecommunications carrier when a plurality of telecommunications carriers have the same charge and are cheap. The present invention is characterized in that it includes means for selecting a telecommunications carrier whose usage status is low based on the content of the information.

In the present invention, the usage state storage circuit for each telecommunications carrier may be a cumulative charge storage circuit for each telecommunications carrier. Further, in the present invention, the usage state storage circuit for each telecommunications carrier can be a call number distribution storage circuit.

[Effect]

The usage status for each telecommunications carrier is stored in the usage status storage circuit for each telecommunications carrier of the storage device.

When a plurality of telecommunications carriers have the same charges and low prices, the telecommunications carrier with the least usage status is selected based on the contents of the usage status memory circuit for each telecommunications carrier. Through the above operations, a telecommunications carrier can be selected fairly.

〔Example〕

Embodiments of the present invention will be described with reference to the drawings. 1st
The figure is a block diagram of a private branch exchange according to a first embodiment of the present invention. In FIG. 1, a private branch exchange 100 includes a main switch 4o connected to a plurality of extension terminals 11 to 13 via an extension 10 and a line circuit 20, and connected to an outside line 70 via a central office trunk 30; It includes a control device 50 and a storage device 60.

The storage device 50 includes a telecommunications carrier record 16α circuit 61 for each area number that stores a table for selecting a telecommunications carrier based on low charges, and an additional dial information storage circuit 63 for each telecommunications carrier. include.

The control device 50 includes a call detection means 51 and a dial information reading means 52 that detect dial information input from the line circuit 20, and a dial information reader that selects a vacant office line trunk 30 and sends dial information via the sender device 31. The transmission means 54, the connection control means 53 for controlling the connection of the main switch 40, and the dial information reading means 52 select a telecommunications carrier with a low charge based on the dial information of the dial information reading means 52 and the contents of the storage device 60, and read the dial information. It includes a telecommunications carrier selection means 55 for supplying additional dial information together with the dial information of the means 52 to the dial information sending means 54 and activating the connection control means 53.

Here, the feature of the present invention is that the storage device 60 includes
It includes a cumulative charge storage circuit 62 for each telecommunications carrier, and the telecommunications carrier selection means 55 selects the contents of the cumulative charge storage circuit 62 for each telecommunications carrier when a plurality of telecommunications carriers have the same charge and are cheap. The purpose of the present invention is to include means for selecting a telecommunications carrier with a lower cumulative charge based on the above information.

The operation of the private branch exchange having such a configuration will be explained.

FIG. 2 is a diagram showing the contents of the telecommunications carrier storage circuit for each area number of the private branch exchange of the present invention.

In FIG. 2, "0" indicates that the fee is low and selection is possible, and "1" indicates that the fee is high and selection is not possible. Moreover, X1 to X indicate telecommunications carriers.

FIG. 3 is a diagram showing the contents of the accumulated charge storage circuit for each telecommunications business in the private branch exchange according to the first embodiment of the present invention. FIG. 4 is a flowchart showing the operation of the private branch exchange according to the first embodiment of the present invention.

The operating procedure of the control device will be explained using FIGS. 1 to 4 together. First, the call detection means 51 detects a call from the extension terminal 11 (operation procedure A).

Next, the dial information reading means 52 reads the dial information of the extension terminal 11 (operation procedure B), and determines whether the dial information indicates a long-distance call (operation procedure C).

For long-distance calls, telecommunications carrier storage circuit 6 for each long-distance number
Select a telecommunications carrier from step 1 (operation procedure D). The table of the telecommunications carrier storage circuit 61 for each area number is shown in the second table.
As shown in the figure, there may be multiple telecommunications carriers selected, so it is necessary to determine whether the selected carriers are two or more. Each weight cumulative charge storage circuit 62 selects the telecommunications carrier with the lowest cumulative charge among the selected telecommunications carriers.Operation procedure F): After the end of the call, each weight cumulative charge storage circuit 62 Add the call charges of the selected telecommunications carrier to

Next, the dial information additional storage circuit 63 of the telecommunications carrier
The additional dial of the selected telecommunications carrier is read (operation procedure G). Next, an idle office line trunk 30 is selected (operation procedure H), and dial information is sent together with additional dial information to the sender device 31 corresponding to the selected idle office line trunk 30 (operation procedure I).

The sender device 31 sends the central office line trunk 3 according to the dial information.
Sends dial information to an outside line using the 0 line.

Upon detection of a response from the outside line (operation procedure J), the connection control means 53 connects the main switch connecting the extension terminal 11 and the office line trunk 30 (operation procedure K).

Further, it is determined whether the dial information indicates a long-distance call (operation procedure C), and if the dial information is not a long-distance call, normal operation is performed (operation procedure L).

Operation procedure E) to determine whether there are two or more selected operators.
, if there is only one company, normal operation is performed (operation procedure L).

FIG. 5 is a block diagram of a private branch exchange according to a second embodiment of the present invention. FIG. 6 is a diagram showing the contents of the call number distribution storage circuit of the private branch exchange according to the second embodiment of the present invention. FIG. 7 is a flowchart showing the operation of the private branch exchange according to the second embodiment of the present invention.

In the second embodiment, as shown in FIGS. 5 to 7, the accumulation charge storage circuit 62 for each telecommunications business in the first embodiment becomes a call distribution storage circuit 64, and multiple telecommunications carriers are The number of calls is distributed when the charges are low.

〔Effect of the invention〕

As explained above, the present invention has the excellent effect of allowing a fair selection of telecommunications carriers.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a private branch exchange according to a first embodiment of the present invention. FIG. 2 is a diagram showing the contents of the telecommunications carrier storage circuit for each area number of the private branch exchange according to the first embodiment of the present invention. FIG. 3 is a diagram showing the contents of each telecommunications service weight accumulation charge storage circuit of the private branch exchange according to the first embodiment of the present invention. FIG. 4 is a flowchart showing the operation of the private branch exchange according to the first embodiment of the present invention. FIG. 5 is a block diagram of a private branch exchange according to a second embodiment of the present invention. FIG. 6 is a diagram showing the contents of a call number distribution storage circuit of a private branch exchange according to a second embodiment of the present invention. FIG. 7 is a flowchart showing the operation of the private branch exchange according to the second embodiment of the present invention. '10...Extension, 11.12.13...Extension terminal, 2
0... Line circuit, 30... Office line trunk, 31.
... Sender device, 40 ... Main switch, 50 ... Control device, 51 ... Call detection means, 52 ... Dial information reading means, 53 ... Connection control means, 54 ... Dial Information sending means, 55...Telecommunications carrier selection means, 60...Storage device, 61...Telecommunications carrier storage circuit for each area number, 62...Telecommunications carrier cumulative charge storage circuit , 63... Dial information addition storage circuit for each telecommunications carrier, 64... Call number distribution storage circuit, 100.
...Private branch exchange. Agent Patent Attorney Nao Takashi Ide 1st, ゛・ ,・th
1 Figure - Example Figure 2 Figure 3 Figure 5 Figure 2 Example Figure 6

Claims (1)

[Scope of Claims] 1. A main switch connected to a plurality of extension lines via a line circuit and connected to an outside line via a central office line trunk, a control device, and a storage device, the storage device mentioned above. The control device includes a telecommunications carrier storage circuit for each area number and an additional dial information storage circuit for each telecommunications carrier, which stores a table for selecting a telecommunications carrier based on low charges. , comprising a telecommunications carrier selection means for selecting a telecommunications carrier with a low charge based on the dialing information inputted from the line circuit and the contents of the storage device, and supplying the dialing information and additional dialing information to the vacant office line trunk. In the private branch exchange, the storage device includes a usage state storage circuit for each telecommunications carrier, and the telecommunications carrier selection means selects a usage state for each telecommunications carrier when multiple telecommunications carriers have the same charges and are cheap. A private branch exchange comprising means for selecting a telecommunications carrier whose usage status is low based on the contents of a usage status storage circuit. 2. The private branch exchange according to claim 1, wherein the usage state storage circuit for each telecommunications carrier is a cumulative charge storage circuit for each telecommunications carrier. 3. The private branch exchange according to claim 1, wherein the usage state storage circuit for each telecommunications carrier is a call number distribution storage circuit.