JPH04346554A - Key telephone system - Google Patents

Abstract

PURPOSE:To display an approximately accurate calling charge when a subscriber calls through an NCC line. CONSTITUTION:When the calls are received through an NCC line, the second number is set at t1 per calling frequency from a calling subscriber to a calling office, at t2 per calling frequency from the calling office to a called office, and at t3 per calling frequency from the called office to a called subscriber respectively in regard of the calling charge. Then an LCR part 14 of a main device 10 calculates 1/{(1/t1)+(1/t2)+(1/t3)}=T, and a CPU 21. of e key telephone set 20 counts up the charge equivalent to a single calling frequency every T seconds together with the time set at a timer 23. Then the calling charge is shown at a display part 24.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention provides a new communication carrier line (
Hereinafter, this will be referred to as the NCC line. ) relates to a button telephone device that displays the call charge in real time when a call is made using a telephone.

0002

[Prior Art] Conventionally, the real-time display of call charges when making a call using an NCC line in this type of button telephone device displays the charge as it would be if an NTT (registered trademark) line was used (NTT deemed charges). display) or display the charge calculated by multiplying the charge for using an NTT line by a fixed ratio (fixed ratio multiplication display)
It is supposed to be done. In both of these methods, the fee per degree is added to the amount of time per degree.

For example, when calling from Osaka to Yokohama, NT
Assuming that the T charge is displayed as is, the time per degree is 7.5 seconds and the charge per degree is 10 yen, so the call charge is displayed in 10 yen increments of 10 yen, 20 yen, 30 yen, It is updated and displayed every 7.5 seconds.

[0004] In addition, when displaying a charge calculated by multiplying by a certain ratio, if the ratio is 0.85, it is usually calculated as 7.5 seconds x (1/0.85) ≒ 8.8 seconds. Calculate 8.
The price is updated every 8 seconds in increments of 10 yen, 10 yen, 20 yen, 30 yen, and the price is displayed at a rate that is approximately 15% cheaper.

[0005]

However, the above-mentioned conventional button telephone device has a problem in that the difference between the displayed charge and the actual charge is too large. For example, if you call from Osaka to Yokohama or Hiratsuka using Japan Telecom (JT), the exact cost for a 3 minute call is 200 yen, 230 yen.
yen, and in the NTT assumed fare display of the above embodiment, it is 240 yen for both Yokohama and Hiratsuka, and in the constant ratio multiplication display, it is 210 yen for both Yokohama and Hiratsuka.

[0006] I will not go into detail about NTT and NCC's rate calculation methods, but Figure 3 shows the number of seconds per 10 yen per degree and the daytime rate for 3 minutes when calling from Osaka to Yokohama or Hiratsuka during the day. It comes to show.

[0007] The present invention solves these conventional problems, and provides an excellent key telephone device that can display almost accurate real-time charges when making a call using an NCC line. With the goal.

[0008]

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention provides call times per call from a caller to a calling station, from a calling station to a terminating station, and from a terminating station to a called party. When t1, t2 and t3 are t1, t2 and t3, 1/{(1/t1)+(1/t2)+(1/
t3)}=T, and calculate 1 every T time.
The charge for each degree is added and displayed.

[0009]

Therefore, according to the present invention, almost accurate real-time charge display can be performed by calculating the call time T per call when making an NCC line call using the calculation means.

0010

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the structure of an embodiment of the present invention. In FIG. 1, 1 is a central office line for making calls;
is a main device that controls the entire button telephone device, and 20 is one of the plurality of key telephones connected to the main device 10.
It is one. In the main device 10, reference numeral 11 denotes a station line circuit that performs network control of the accommodated station line, and performs dialing to the station line 1 and the like. Reference numeral 12 denotes an extension circuit, which performs data communication with the key telephone 20. 13 is a central control circuit that controls the entire button telephone device. 14 is an LCR (economic route selection) section that automatically selects the line with the lowest call charge, and also reduces the call time per call when making an NCC call T=1/{(1/t1)+(1/t2) +(1/t
3)}. button phone 2
0, 21 is C for controlling the button telephone 2.
PU (central processing unit), 22 is a keypad such as office line buttons and dials, 23 is a timer for measuring time,
24 is a display unit for displaying call charges in real time.

Next, the operation of the above embodiment will be explained. Assume now that a key telephone device is installed in Osaka, and a call is made to Yokohama from the key telephone device. The button telephone 20 presses the office line button on the keypad 21,
When dialing 045-932-XXXX, the CPU 21 of the button telephone 20 detects these numbers and transmits them to the central control circuit 13 via the extension circuit 12 of the main device 10. The central control circuit 13 first connects the office line 1 to the office line circuit 11.
, and then instructs the LCR unit 14 to capture 0.
Give them the dial number 45-932-XXXX and let them decide whether it is cheaper to make a call through NTT or which NCC company. The LCR unit 14 calculates the average call time,
For example, in 3 minutes, the charges of NTT and NCC are calculated, the cheapest line is selected, and a reply is sent to the central control circuit 13. For example, if the answer is that Japan Telecom is the cheapest, the central control circuit 13 instructs the office line circuit 11 to add the line selection number 0088 of Japan Telecom to the beginning of the dial and dial. In response to this, the office line circuit 11 sends a dial to the office line 1 to 0088-045-932-XXXX.

[0012] The LCR unit 14 further calculates the number of seconds per degree from the originator to the originating station (Osaka) as t1, the similar number of seconds from the originating station to the terminating station as t2, and the similar number of seconds from the terminating station to the terminating party as t1. When the number of seconds is t3, 1/{(1/t1
)+(1/t2)+(1/t3)}=T and transmits the number of seconds T to the central control circuit 13. To explain using the example of FIG. 2, t1 = 180 seconds, t2 = 10.5 seconds, t
Since 3 = 45 seconds, T = 9.4 seconds.

After transmitting the dial to the office line 1, the office line circuit 11 monitors the response from the other party, and when it detects a response from the other party, notifies the central control circuit 13 of this fact. When there is a response from the other party, the central control circuit 13 sends the key telephone 20 via the extension circuit 12.
1 frequency charge (1
0 yen) to be displayed. The CPU 21 counts the time using the timer 23, and displays 10 yen, 20 yen, 30 yen, and 1 on the display section 24 of the button telephone 20 every T=9.4 seconds.
The charge display is increased by 0 yen and the call charge is displayed in real time.

[0014] Thus, according to the above embodiment, the NCC
Call time per call when making a call T = {1/(1/t1
)+(1/t2)+(1/t3)},
The call charge per degree per time T = 9.4 seconds (
10 yen) is added and displayed, as shown in Figure 2,
This method has the effect of displaying real-time charges with higher accuracy than the NTT deemed charge display method and fixed ratio multiplication display method.

[0015] In order to display completely accurate charges, the CPU of the key telephone 20 needs to be
21 and transmits t1, t2, t3 to the CPU
21 can be done by adding 10 yen (call charge per call) for each of the three times, but there is a problem that the circuit becomes complicated. In contrast, this embodiment has the advantage of being able to display call charges in real time with high precision and at low cost using a simple circuit.

[0016]

Effects of the Invention As is clear from the above embodiments, the present invention provides a communication time T=1 per call when originating an NCC line.
/{(1/t1)+(1/t2)+(1/t3)
} is calculated, and the call charge per call is calculated and displayed for each time T. Therefore, the present invention has the advantage that almost accurate real-time charge display can be performed with a simple circuit.

[Brief explanation of drawings]

FIG. 1 is a schematic block diagram of a button telephone device according to an embodiment of the present invention.

[Figure 2] Daytime toll chart between Osaka and Yokohama and Hiratsuka

[Figure 3]
Daytime fare economy route map between Osaka and Yokohama and Hiratsuka

[Explanation of symbols]

1. Central office line 10 Button telephone main device 11　Station line circuit 12 Extension circuit 13 Central control circuit 14 LCR section 20 button telephone 21 CPU section 22 Keypad 23 Timer 24 Display section

Claims (1)

[Claims] [Claim 1] Make a call using a new telecommunications carrier line,
When displaying the charges on the phone in real time, t1 is the number of seconds per degree from the caller to the calling station, t2 is the number of seconds per degree from the calling station to the receiving station, and from the receiving station to the called party. When the number of seconds per degree is t3, 1/{(1/t1)+(1/t2)+(1/t
3)}=T and means for calculating 1 for each T second time.
A button telephone device comprising means for calculating and displaying charges for each degree.