JPH0530192A - Key telephone system - Google Patents

Abstract

PURPOSE:To recognize a channel and a call rate even by a key telephone set except for a key telephone set with display unit. CONSTITUTION:Dial data originated from a key telephone set 1-n is transmitted to a control part 24 through a key telephone set interface part 21, and is transmitted to a selection circuit 25. It decides the channel whose call rate becomes minimum, adds an access number for a decided electric communication industry name to dial data, and transmits it from the dial data control part 24 to a trunk line interface part 23. It transmits dial data to trunk lines 3n and the control part 24 controls a channel switch part 22 so as to form the channel between the telephone set 1-n which makes a call and the trunk line 3n. When a callee makes a response, the control part 24 informs the circuit 25 of the start of call rate calculation. When the call terminates, the control part 24 transmits the electric communication inductry name decided in the circuit 25 and the calculated call rate to a sound synthesis circuit 26 and calls the telephone set 1-n so as to notice the rate by sound.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a key telephone device,
In particular, the present invention relates to a button telephone device which has a selection circuit for selecting a call route having the lowest call charge when receiving dial codes for long distance connection from a plurality of key telephones accommodated therein and which transmits selection information to an exchange.

[0002]

2. Description of the Related Art Conventionally, in this type of key telephone device, the selected route of the lowest call charge and the notification of the call charge are limited to the key telephone with an indicator housed in the key telephone main unit. It was a composition.

[0003]

The above-mentioned conventional button telephone device is limited to a button telephone with an indicator, in which the selected lowest call route and call charge notification are accommodated in the key telephone main unit. Therefore, there is a drawback in that the above-mentioned call route and call charge cannot be confirmed in a key telephone without an indicator.

[0004]

SUMMARY OF THE INVENTION A button telephone device of the present invention includes a selection circuit for selecting a call route having the lowest call charge when receiving dial codes for long distance connection from a plurality of accommodated button telephones. In a key telephone device having a main device for transmitting selection information to an exchange, the main device makes a call after the call by the calling key telephone ends, and calls the telecommunications carrier name and call charge of the selected communication path. It has a notification means for notifying the caller by voice.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a flow chart showing an example of an operation procedure in this embodiment.

In FIG. 1, the key telephone device of this embodiment comprises key telephone sets 1-1 to 1-n and a main unit 2, and the main unit 2 has buttons that interface with the key telephone sets 1-1 to 1-n. Telephone interface unit 21 and office line interface unit 23 for interfacing with office line 3n
A selection circuit 25 for selecting the call path with the lowest call charge, a voice synthesis circuit 26 for sending out the telecommunications carrier name of the selected communication path and the call charge by voice, the key telephone interface section 21, and the station. Call path switch unit 22 for connecting the line interface unit 23 and the voice synthesis circuit 26
And a control unit 24 for controlling the main device 2 as a whole.

Next, the operation of this embodiment will be described with reference to FIG.

The dial data transmitted from the key telephone set 1-n is transmitted to the control section 24 via the key telephone set interface section 21. The transmitted dial data is sent to the selection circuit 25 to determine the route with the lowest call charge. The determined access number to the telecommunications carrier line is added to the dial data sent from the key telephone 1-n, and this dial data is sent from the control unit 24 to the office line interface 23. The office line interface unit 23 sends dial data to the office line 3n, and the control unit 24 controls the call path switch unit 22 to connect the originating key telephone 1-n and the office line interface unit 23. The connecting station line 3n is connected to form a speech path.

Next, when the called party responds based on the dial data sent to the office line, the office line interface unit 23
Detects the response and transmits it to the control unit 24. Control unit 24
Informs the selection circuit 25 of the start of call charge calculation.

Upon termination of the call by the callee or caller,
When the caller is on-hook, the hook signal is sent to the control unit 24 via the key telephone interface unit 21. In the control unit 24, the lowest telecommunications carrier name determined by the selection circuit 25 and the calculated call charge are sent to the voice synthesis circuit 26, and the key telephone 1 which has finished the call
-N is notified by calling voice.

Next, the operation of this embodiment will be described with reference to FIGS.
Will also be described.

When receiving a call from the key telephone 1-n, the main unit 2 completes the preparation for receiving the dial code and executes the calling procedure (S1) for sending the outgoing signal. By this procedure S1, the control unit 24 receives the dial code (S
2), the selection circuit 25 causes the line with the lowest charge (for example, J
Select T) (S3) and start calculation of call charges (S)
4). Then, the telephone call is monitored by the key telephone interface unit 21 (S5), and when the caller's on-hook is confirmed due to the end of the telephone call (S6), the key telephone that has transmitted the call is called back (S7), (S3), (S4). The information (for example, "JT 360 yen") is output as a voice (for example, "The current telephone call is JT 360 yen") by the voice synthesis circuit 26 (S8), and the process ends.

[0014]

As described above, the button telephone device of the present invention has a notification means for outputting the selected lowest call route and call charge by voice, so that a button telephone other than the button telephone with the display can be used. There is an effect that the call route and the call charge can be confirmed.

[Brief description of drawings]

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

FIG. 2 is a flow chart showing an example of an operation procedure in the present embodiment.

[Explanation of symbols]

 1-1 to 1-n button telephone 2 main device 21 button telephone interface section 22 speech path switch section 23 office line interface section 24 control section 25 selection circuit 26 voice synthesis circuit 3n office line

Claims (1)

Claim: What is claimed is: 1. When a dial code for long distance connection is received from a plurality of accommodated key telephones, a selection circuit for selecting a call route with the lowest call charge is provided, and selection information is provided. In a key telephone device equipped with a main device for transmitting to an exchange,
The main device, after the call by the key telephone that originated the call,
Make a call and the telecommunications carrier name of the selected communication route,
And a button telephone device having a notification means for notifying the caller of the call charge by voice.