JPH03201656A - Key telephone system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a button telephone device that selects the cheapest call route when making an outside line call.

BACKGROUND OF THE INVENTION Conventional key telephone devices use the New Public Line Communication Network (hereinafter referred to as NCC) to use a call route with low call charges.
It's called a line. ), the user selects the cheapest call route from available NCC lines according to the area code of the called party, adds the selected NCC number, and dials.

In this way, even with the above-mentioned conventional button telephone device, the user can
By adding a CC number, the call route with the lowest call fee can be selected.

Problems to be Solved by the Invention However, normal NCC lines are designed so that call charges are lower than those of Nippon Telegraph and Telephone Corporation's (NTT) public communication network (CC line) when used for a long period of time. Therefore, when the NCC line is used for a short call time, there is a problem in that the call charge becomes higher than when only the CC line is used.

SUMMARY OF THE INVENTION The present invention is intended to solve these conventional problems, and it is an object of the present invention to provide a button telephone device that automatically selects the route with the lowest call fee and makes a call.

Means for Solving the Problems In order to achieve the above object, the present invention calculates the average call time for each shortened number, and calculates the average call time for the CC line and NCC line for the average call time corresponding to the shortened number when making an outside call. The charges are calculated and compared, and the call is sent to the cheapest line.

Therefore, according to the present invention, when making an outside call using speed dialing, the call is made using the call route with the lowest call charge over the average call time, so the user can save a portion of the call charge without having to perform any troublesome operations. You can select the cheapest call route and save on call charges.

Embodiment FIG. 1 is a block diagram showing the configuration of a key telephone device according to an embodiment of the invention.

In FIG. 1, l indicates a speed dial detection means, which detects a speed dial call made by combining a small number of keys on a button telephone.

Reference numeral 2 denotes an average call time calculation means, which calculates the average call time of the speed dials detected by the speed dial detection means 1 based on, for example, the total call time and number of calls for each speed dial stored in the average call storage means 3. is calculated and stored in the first storage means 3.

Reference numeral 4 indicates a second storage means for storing data other than the data stored in the first storage means 3, specifically, telephone numbers for each speed dial, call charge calculation tables and programs for NCC lines and CC lines, etc. remember.

5 indicates a call charge calculation means, and speed dial detection means 1
Based on the detected speed dial and the call rate table in the storage means 4, the average call time storage means 3 calculates the call charge when using only NTT during the average call time stored in the storage means 3, and the call rate via the cheap NCC call route. Calculate call charges when.

Reference numeral 6 indicates a calling method determining means, which compares the call charge calculated by the call charge calculating means 5 when only the CC line is used and the call charge when using the cheapest NCC line, and determines which call route will be used. Decide whether to send a message.

Reference numeral 7 indicates an NCC number adding means for adding an NCC number based on the determination of the calling method determining means 6; 8 indicates a speed dial sending means; the dial sending means 8 is connected to the second storage means 4;
The line is acquired based on the outputs of the calling method determining means 6 and the NCC number adding means 7, and a dial signal is sent by speed dialing.

FIG. 2 is a block diagram showing a specific configuration of the button telephone device of FIG. 1.

In FIG. 2, reference numeral 11 indicates a button telephone, and 12 indicates a microcomputer. After determining the dialing method based on a built-in program, the microcomputer 12 develops the contents of the speed dial and captures the line. Specifically, it controls the central office line circuit 13, and specifically includes a storage unit 12a that stores average call time for each speed dial, telephone number for each speed dial, unit charges for CC lines and NCC lines, programs, etc. , an input section 12b to which the output of the button telephone 11 is supplied, an output section 12c for outputting control signals for dialing signals to the office line 13, etc., and, as shown in FIG. 3, a storage section 12a.

It is comprised of an arithmetic control section 12d that controls the input section 12b and the output section 12c and performs data comparison operations and the like.

The main device includes a microcomputer 12 and a central office line circuit 1.
3, etc.

FIG. 3 is a flowchart for explaining the operation of the microcomputer 12, and the operation of the above embodiment will be explained based on this flowchart.

In the above embodiment, when the user operates the keys of the telephone 11 to make a speed dial call, the microcomputer 12 detects the speed dial call and its number (step 21), based on the data in the storage unit 12a and the speed dial number. (Step 22). If the call is a long-distance call and the NCC line can be used, the average call time of the shortened number is determined (Step 23). .

Then, based on the data in the storage unit 12a, the communication charge A when only the CC line is used and the communication charge B when using the cheapest NCC line for the average call time are calculated (
Step 24).

Next, it is determined whether the call charge A is greater than or equal to the call charge B (Step 25), and if the call charge B is less than the call charge A, the NCC obtained by the NCC number adding means 7 after the line is captured by the central office line 13 is The number is added to the dial number corresponding to the abbreviated number and the call is made (step 26).

Also, if it is determined in step 22 that the call is not a long-distance call, and N
If the CC line cannot be used, or if the call charge A is equal to or higher than the call charge B in step 25, the central office line 1
After acquiring the line in step 3, a call is made using only the dial number corresponding to the abbreviated number (step 27).

In this way, according to the above-described embodiment, the inconsistency that the call charges are higher than the CC line even if the user uses the NCC line is reduced.

Since the judgment criteria change as the average call time changes, the call route with the lowest call charge can always be selected based on judgments that suit the actual situation.

Of course, it is also possible to make fixed-line calls as before.

Effects of the Invention As is clear from the above embodiments, the present invention calculates the average call time corresponding to each shortened number, and when making an outside call, calculates the CC line, N, in the average call time corresponding to the shortened number.
The call rate for each CC line is calculated and compared, and the call is made to the cheapest line, allowing the user to select the call route with the lowest call rate without any troublesome operations. , it has the effect of saving call charges.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of a button telephone device according to an embodiment of the present invention, FIG. 2 is a circuit diagram showing a specific configuration of the button telephone device of FIG. 1, and FIG. It is a flowchart for explaining the operation of the microcomputer. DESCRIPTION OF SYMBOLS 1... Speed dial detection means, 2... Average call time calculation means, 3... First storage means, 4... Second storage means, 5... Call charge calculation means, 6. ...Calling method determining means, 7...New public line communication network number addition means, 8
...Speed dial transmission means, 11...Telephone, 12
...Microcomputer.

Claims (1)

[Scope of Claims] Means for calculating the average call time for each speed dial number; means for storing the average call time calculated by the calculation means; and means for storing call charges for CC lines and NCC lines; Speed dial. This button telephone device has means for calculating and comparing call charges for a CC line and an NCC line in an average call time corresponding to the shortened number when making an outside line call, and making a call to the cheaper line.