JPH01149659A - Automatic selection system for telephone network - Google Patents

Abstract

PURPOSE:To enable a telephone network of which call charges is the most inexpensive to be selected even when call charges systems are different and the telephone network of which call charges is minimum is different based on the length of the call time by allowing a subscriber to input an expected call time at the time of calling. CONSTITUTION:When the subscriber 5 of an extension executes the call, he/she dials the subscriber's number of a callee 3 after dialing the expected call time as expected call time information in a minute unit by number. A telephone network selection device 9 respectively calculates the call charges when the telephone network A is used and the call charges when the telephone network B is used, compares them and sends the result of that comprison to a central control equipment 8. The device 8 analizes the information from the device 9, adds a connection number for connecting to the telephone network of which call charges is the most inexpensive to the subscriber's number of the callee and sends it to a subscriber's exchange 2 through a trunk 7.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic telephone network selection system, and more particularly to an automatic telephone network selection system that selects a telephone network that minimizes call charges under given conditions.

[Conventional technology]

Conventionally, the selection method of multiple telephone networks in a private branch exchange is based on the area number and time zone to which the called subscriber belongs, and compares the average holding time over a certain period of time to minimize call charges. The method was to select the telephone network.

[Problem that the invention seeks to solve]

The conventional telephone network automatic selection method described above selects the telephone network based on the area number and time zone to which the called subscriber belongs, so the call charge is minimized depending on the length of the call time due to the difference in the charge structure of the telephone network. There is a problem in that it cannot be applied when the telephone networks used are different.

An object of the present invention is to enable the subscriber to obtain the lowest call charge by inputting the expected call time when making a call, even if the telephone network has different call charge structures and minimizes the call charge depending on the length of the call. An object of the present invention is to provide an automatic telephone network selection method for selecting a telephone network.

[Means for solving problems]

The automatic telephone network selection method of the present invention is a telephone network automatic selection method using a private branch exchange that selects and connects a plurality of telephone networks with different call rate structures, in which the private branch exchange selects and connects a plurality of telephone networks with different call rate structures, and the private branch exchange selects and connects a plurality of telephone networks with different call rate structures. In addition, it has a function of receiving estimated call time information, and calculates charges for calls made to each of the plurality of telephone networks based on the called subscriber number and estimated call time information, and determines that the call charge for the estimated call time is the cheapest. The telephone network is configured to have a function of identifying a telephone network, and a function of making a call by adding a connection number for connecting to the identified telephone network.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of one embodiment of the present invention.

The private branch exchange 1 is connected to the local exchange 4 in which the called subscriber 3 is accommodated via two telephone networks, telephone network A and telephone network B, which are connected to the local exchange 2. There is. In the private branch exchange 1, an extension subscriber 5 is accommodated in a communication path 6, and the communication path 6 is connected to the local exchange 2 via a trunk 7.
is connected to. Also, a central control device 8 receives the dialing signal of the extension subscriber 5 and expected call time information and performs connection control, and receives the called subscriber number and expected call time information from the central control device 8 and connects multiple telephones. The telephone network selection device 9 includes a telephone network selection device 9 having a function of calculating the charge for a call for each network and identifying the telephone network with the lowest call charge for the expected call time. Local exchange 2 connects to local exchange 3 via telephone network A or telephone IB according to the designation of the received dial signal.

Here, it is assumed that the fee structure of telephone network A and telephone network B is as follows.

Telephone IA: 20 per call, regardless of call duration
0 yen.

Telephone network B...The unit charge is 10 yen, and the unit charge is added every 5 seconds.

In other words, when the call time is 100 seconds 7, the call charge for both is the same 200 yen, and it is economically advantageous to use Telephone v4B when the call time is less than 100 seconds, and use telephone network A when the call time exceeds 100 seconds. be.

Next, the operation will be explained.

The extension subscriber 5 makes a call, dials the time in minutes as expected call time information, and then dials the subscriber number of the called subscriber 3.

The expected call time information and subscriber number are received by the central controller 8 and then sent to the telephone network selection device 9. The telephone network selection device 9 calculates and compares the call charges when using the telephone network A and the call charges when using the telephone network B from these two pieces of information, and sends the result to the central control unit 8. Send to.

The central control device 8 analyzes the information from the telephone network selection device 9, adds a connection number for connecting to the telephone network with the lowest call charge to the called subscriber number, and sends it to the subscriber exchange via the trunk 7. Send to 2.

At the same time, the trunk 7 is connected to the extension subscribers.

〔Effect of the invention〕

As explained above, the present invention enables subscribers to enter the expected call time when making a call, thereby making it possible to obtain the lowest cost even when different telephone networks have different call rate structures and minimize call charges depending on the length of the call time. This has the effect that it becomes possible to select a telephone network that requires only a call fee.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of one embodiment of the present invention. 1... Private branch exchange, 2, 4... Local exchange, 3... Called subscriber, 5... Extension subscriber, 6... ... Call path, 7 ... Trunk, 8 ... Central control unit, 9 ... Telephone network selection device, A, B ... Telephone network.

Claims (1)

[Claims] In an automatic telephone network selection method of a private branch exchange that selects and connects a plurality of telephone networks with different call rate structures, the private branch exchange has a function of receiving expected call time information in addition to the called subscriber number input by the extension subscriber. , a function of calculating charges for a call made to each of the plurality of telephone networks based on the called subscriber number and expected call time information and identifying a telephone network with the lowest call charge for the expected call time; An automatic telephone network selection system characterized by having a function of adding a connection number for connecting to the identified telephone network and making a call.