JPH042040B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is comprised of a main device connected to a central office line and a plurality of key telephones, and particularly relates to a key telephone device having a hold function.

In the hold operation of key telephones, when a call arrives at a central office line and the person who answers the telephone is not the person the caller wants to call, the call is temporarily put on hold while the person is being searched for or during a call. When a person wishes to temporarily wait for a call, he or she may press the hold button key on the key telephone to place the call line on hold. However, when the hold time is long, the person on the other end of the line gets tired of waiting and ends up hanging up, or the person on the other end of the line has to wait uncomfortably.

For this reason, conventionally, when the hold time has elapsed for a certain period of time, a hold alarm sound is sent to the key telephone to alert the person on hold. However, the person on hold was unable to contact the push button telephone on hold to inform them when the call would be hung up or to request that the call be released from hold.

The present invention has been made to solve this problem, and after a certain period of time has elapsed after being placed on hold, a message sound source such as a voice synthesis IC installed in the main device sends a message to the other party on hold (for example, " If you do not wish to be called by your voice, please answer "Yes" after sending this message.This will switch to a voice call.''), and after sending the message, the other party will When the person on hold makes a voice call, the hold state is switched from the hold state to the speaker listening state, and the loudspeaker amplifier installed in the button telephone is connected to the communication circuit, and the voice signal of the other party is transmitted through the amplifier. The system attempts to urge the person on hold to respond by transmitting the message from the speaker. For this purpose, the key telephone comprises a main device connected to the central office line, a plurality of key telephones including a telephone communication circuit network and a reception amplifier, and has at least a group of telephone line switches for selecting the said telephone line and a holding function means. The device includes a message sound source circuit, an audio signal receiving section, a group of input switches,
A timer circuit for counting a certain period of time from the start of holding to sending a message, a group of sound source selection switches for sending a message to the held line, and means for connecting the held line to the receiving amplifier of the key telephone. and a central control unit that controls and processes these operations, and the central control unit detects a hold key press signal of the button telephone, starts the sound source selection switch group and the timer circuit, and activates the sound source selection switch group and the timer circuit. In response to the count-up signal, the central control unit activates the sound source selection switch group, sends a message to the central office line, and after sending the message, turns on the input switch group to receive the audio signal from the person on hold. Provided is a voice calling system for a person on hold, characterized in that when the voice signal reception unit receives the voice signal, the central control unit is activated and the call path of the line on hold is connected to the reception amplifier of the key telephone. It is something to do.

Next, one embodiment of the present invention will be described based on the drawings.

FIG. 1 is a block diagram of a button telephone device showing one embodiment of the present invention, and FIG. 2 is a flowchart showing the operation of the portion of the key telephone device shown in FIG. 1 related to the present invention.

In Fig. 1, 1 is the main device, 2-1 or 2-
n is a button telephone, and 3 is a central office line for forming a DC loop during hold and call times, detecting incoming calls from the central office line, activating the central control unit 4, and sending dial signals to the central office line. circuit, 4 is telephone 2-1
to 2-n, control of incoming signals from the office line circuit 3, control of the sound source selection switch group 9, control of the communication path switch group 8 for line selection, and control of the input switch group 19. A central control unit performs control, 5 is a hold sound source circuit for sending music to the hold line while on hold, 6 is a message sound source circuit for sending a message to the person on hold while on hold, 7-1 to 7 -n is the central office line, 8 is a group of call path switches for configuring a telephone line between the central office line 7-1 to 7-n and the telephone set 2-1 or 2-n, and 9 is on hold. 10 and 10' are data transmitting/receiving circuits for transmitting and receiving data between the central control unit 4 and the telephone control unit 15; 11 is a communication circuit network; , 12 is an amplifier, 13 is a speaker, 14 is a key scan circuit including a central office line button, an extension button, a hold button, and a function button that are not shown in the drawings, and 15 is a key scan circuit 1.
4 and the key press signal of the switch 17 are sent to the main device 1 side, and the communication circuit network 11 and amplifier 12
16 is a relay for switching the communication path to the communication line network 11 or the amplifier 12, and 17 is a switch. , 18 is a timer circuit, 19 is a group of input switches for inputting the voice signal of the person on hold to the voice signal receiving circuit 20, and 20 is a group of input switches for inputting the voice signal from the person on hold to the voice signal receiving circuit 20. An audio signal receiving circuit 21 sends signal presence/absence data, and 21 is a bias potential applied to the cross point switches of the communication path switch group 8 and the sound source selection switch group 9.

Next, the operation will be explained with reference to the flowchart shown in FIG.

During a call on the office line 7, the operator of the telephone 2-1 first presses the office line button (not shown) on the key scan circuit 14 and turns on the switch 17. Press data and switch 1
7 on-data is detected and each key data is sent to the central control unit 4 of the main device 1 by the data transmitting/receiving circuit 1.
0 and 10'. On the other hand, the central control unit 4 of the main device 1 turns on the crosspoint switch A of the communication path switch group 8 for connecting the central office line communication path a and the telephone communication path b based on the data from the telephone 2-1. .

By the above-described operation, the office line 7 and the telephone 2
-1 through the main device 1. Next, when the operator of the telephone 2-1 presses a hold button (not shown) on the key scan circuit 14, the telephone control unit 15 detects a hold activation signal from the key scan circuit 14, and the telephone control unit 15 The hold button press data is transmitted to the control unit 4 of No. 1 via the data transmitting/receiving circuits 10 and 10'.
In the control unit 4 of the main device 1, based on the hold button press data, first, the cross point switch A of the communication path switch group 8 is turned off (step 31).
In order to send out the held tone, the cross point switch B of the sound source selection switch group 9 with respect to the central office line is turned on (step 32), and the held tone is sent from the held sound source circuit 5 to the central office line (step 33). At this point, the switch 17 is lowered to turn it off. On the other hand, the central control unit 4 receives the hold button press data from the telephone 2-1, and at the same time, the timer circuit 1
8 (step 34). Timer circuit 18
sends a count-up signal to the central control unit 4 after a preset period of time has elapsed (step 35);
In response to this signal, the central worship control section 4 turns off the held tone sending crosspoint switch B of the sound source selection switch group 9 (step 36), turns on the message sending crosspoint switch C (step 37), and switches the message sound source. The circuit 6 is activated (step 38), and the transmission of the hold tone to the message tone is switched to the station line.

After sending the message (step 39), the central control unit 4 turns off the message sending crosspoint switch C (step 40), stops message sending, and switches the input switch group 19 to the crosspoint for a preset period of time. If the point switch D is turned on (step 41) and the person on hold utters a voice to release the hold, for example, "yes" during the time period, the voice signal is transmitted through the crosspoint switch D of the input switch group 19. The output of the voice receiving circuit 20 activates the central control unit 4, and the cross point switch of the communication path switch group 8 that connects the office line communication path a and the telephone communication path b is inputted to the voice reception circuit 20. At the same time as the telephone 2-1 is turned on (step 43), data for setting the telephone 2-1 to the speaker receiving state is sent to the telephone control circuit 15 via the data transmitting/receiving circuits 10 and 10'.

On the other hand, based on the signal, the telephone controller 15 activates the TB relay 16 (step 44). The operation of the TB relay 16 switches the contacts tb0 and tb1 of the relay, and the communication path is connected to the amplifier 12. At this time, the calling voice from the person on hold is transmitted through speaker 1 of the telephone.
3, the sound is amplified and transmitted (step 45).

On the other hand, if there is no voice signal from the person on hold,
The suspended state shown in FIG. 2 is continued again (step 46).
In this state, if the telephone operator raises the switch 17, the telephone controller 15 detects an off-hook signal, restores the relay 16, and makes it possible to make a telephone call.

In addition, a push-dial two-frequency PB signal receiving section is provided in the voice receiving section for canceling hold, and the message (for example, "You are on hold, but dial button 0,
If you press 1, you can call with your voice.'') After sending the message, when the person on hold calls the specified dial number, the PB signal receiving unit receives the calling signal. do,
The PB signal receiving section outputs the signal to the central control section 4, performs the above-described operation, and can switch from the hold state to the speaker listening state.

As explained above, according to the present invention, after the key telephone on hold sends a message inquiring whether or not the person wishes to be released from hold, the communication path is switched from the communication circuit network to the loudspeaker amplifier side, and the voice of the person on hold is transmitted from the speaker. Because it can be amplified and transmitted,
Compared to the conventional key telephone device, which has a hold function centered on the person on hold, where the hold is continued unnecessarily, smoother communication of intentions is possible, and its practical effects are extremely large.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a button telephone device showing one embodiment of the present invention, and FIG. 2 is a flowchart showing the operation of the portion of the key telephone device shown in FIG. 1 related to the present invention. 1... Main device, 2-1, 2-n... Key telephone, 3... Office line circuit, 4... Central control unit, 5...
Hold sound source circuit, 6...Message sound source circuit, 7...
... Office line, 8 ... Call path switch group, 9 ... Sound source selection switch group, 10, 10' ... Data transmission/reception circuit, 11 ... Call circuit network, 12 ... Amplifier, 1
3...Speaker, 14...Key scan circuit, 1
5...Telephone control unit, 16...Relay, 17...
Hook switch, 18... Timer circuit, 19...
...Input switch group, 20...Audio reception circuit, 21
...bias potential.

Claims (1)

[Scope of Claims] 1. Consisting of a main device connected to a central office line, a plurality of button telephones including a telephone communication circuit network and a receiving amplifier, and comprising at least a group of telephone line switches for selecting the telephone line and a holding function means. A button telephone device having a message sound source circuit, an audio signal receiving section, a group of input switches, a timer circuit for counting a certain period of time from the start of holding to sending a message, and sending a message to a line on hold. a group of sound source selection switches for placing the key telephone on hold, means for connecting the held line to the receiver amplifier of the key telephone, and a central control section for controlling these operations; Upon detecting a key press signal, the central control unit activates the sound source selection switch group based on the count-up signal of the timer circuit, sends a message to the office line, and after completing sending the message, turns on the input switch group. A voice call to a person on hold, characterized in that when the voice signal receiving unit receives a voice signal from the person on hold, the voice call path of the line on hold is connected to the receiver amplifier of the key telephone. method. 2. The voice calling system for a person on hold as set forth in claim 1, wherein the voice signal receiving section comprises a PB signal receiving section.