JPH05327896A - Exchange system capable of selecting terminating call - Google Patents

Abstract

PURPOSE:To provide an exchange system capable of selecting an terminating call in which a called party selects whether a terminating call to be accepted or rejected. CONSTITUTION:This system is provided with an audio synthesis circuit 7 storing a speech request message corresponding to extension telephone sets A1... and a control circuit 1 reading the speech request message corresponding to a caller telephone set from the audio synthesis circuit 7, transmitting the read speech request message to a called extension telephone set at the arrival of a call from an optional extension telephone set to an optional extension telephone set and controlling line connection or line interruption or the like according to the transaction of the called extension telephone set.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system in which a plurality of extension telephones are connected to a private branch exchange, and more specifically, a caller selects whether to answer an incoming call or reject an incoming call. The present invention relates to an exchange system capable of selecting incoming calls.

[0002]

2. Description of the Related Art In a conventional private branch exchange, when the called side is an analog telephone, only a ringing tone sounds at the time of an incoming call, and the calling party cannot be known at all. Also, in the case where the called side is a digital telephone and has a display element as represented by a multi-function telephone, the telephone number of the calling party is displayed on the display element during the incoming call, so check this. Thus, it is possible to recognize who the caller is.

[0003]

However, when the called side is in a standby state waiting for a call from a specific party, in the case of an analog telephone, even if a ringing tone is generated by an incoming call, that is the specific party. There was a problem that it was not possible to determine whether or not it was a call from, so it had to be answered and then determined.

Further, in the case of a digital telephone, since the telephone number of the calling party is displayed when receiving a call, it is possible to judge whether or not the calling party is on standby, but the other party on standby. If not, the line cannot be used until the caller interrupts the call request, and if there is a call from the waiting party during this time, there is a problem that the call cannot be answered.

The present invention has been made in view of the above circumstances, and an object thereof is to select an incoming call which enables the called party to select whether to answer the incoming call or reject the incoming call when the incoming call arrives. To provide an exchange system.

[0006]

In order to solve the above problems, an incoming call selectable exchange system of the present invention is a system in which a plurality of extension telephones are connected to a private branch exchange. A voice synthesizing circuit storing a call request message corresponding to an outside line, and when a call is received from any extension telephone or an outside line to any extension telephone, while reading out the call request message corresponding to the calling side telephone from the voice synthesizing circuit, The read call request message is sent to the extension telephone of the called side, and a control circuit for controlling line connection or line disconnection according to the correspondence of the extension telephone of the called side is provided.

[0007]

[Operation] A voice synthesis circuit is connected to the call highway in the private branch exchange. The voice synthesizing circuit stores a call request message corresponding to each extension telephone and outside line connected to this private branch exchange. For example, the message such as "Call request from extension telephone number 0" or "Call request from outside line" is stored.

When an incoming call is received from any extension telephone or an outside line, the control circuit controls the reading of a corresponding call request message from the voice synthesizing circuit and the transmission to the called extension telephone. For example, when there is an extension call from the second extension telephone to the first extension telephone, the control circuit causes the voice synthesizing circuit to call the call request message "2nd extension" corresponding to the second extension telephone which is the calling side. It is a call request from the extension telephone ”and is sent to the extension telephone No. 1 side. When the user of the extension telephone No. 1 hears this and rejects the incoming call, for example, on-hook, the control circuit
Upon receiving this operation signal, the call to the extension telephone No. 1 is completed. As a result, the extension telephone No. 1 returns to the standby state.

In this case, the control circuit may send a call waiting message to the extension telephone No. 2. That is, not only the call request message described above but also the call waiting message is stored in the voice synthesis circuit. Then, when the above-mentioned operation is carried out by the called extension number 1 telephone, the control circuit causes the voice synthesis circuit to respond to the corresponding call waiting message, for example, "please wait for a while to call the number 1 extension telephone." And the like are sent to the extension telephone number 2 which is the calling side. As a result, the user of the extension telephone No. 2 can also recognize that the extension telephone No. 1 is waiting.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing an electrical configuration of an incoming call selectable exchange system of the present invention.

In the figure, the exchange system of the present invention comprises extension circuits 4, 5 and 6 to which extension telephones A1, A2 and A3 are connected, and an exchange function including processing of call signals and call signals. A control circuit 1, a station line circuit 2 connected to a station line, a signal sound circuit 3 that outputs a signal sound such as a ringing tone, and a voice synthesis circuit 7 that outputs a call request message or a call waiting message. The power supply circuit 8 supplies power to each circuit block.

The extension circuit 4 calls the extension telephone A1 and a hook detector 41 for detecting the hook state of the extension telephone A1 connected thereto, the DP / PB counter 42 for detecting the dial signal of the extension telephone A1. A call signal sending unit 43 for sending a signal, a call unit 45 for exchanging a transmitted voice and a received voice, and a power feeding unit 44 for supplying power to the call unit 45.
It is composed of and. Then, the call unit 45 connects to the line 4
It is connected to the extension telephone A1 via 51. Also,
The hook detector 41 uses the extension telephone A through the line 451.
1, the DP / PB counting unit 42 is connected to the line 451 via the counting switch 421, and the calling signal transmission unit 43 is connected to the line 451 via the calling signal switch 431.
Respectively connected to. Other extension circuits 5 and 6
The configuration is also the same as that of the extension circuit 4, and therefore the illustration thereof is omitted here. However, if necessary, the other extension circuits 5 and 6 will be described using the reference numerals corresponding to the reference numerals assigned to the blocks in the extension circuit 4.

The station line circuit 2 is connected via a station line switch 12 to
The signal sound circuit 3 is via the signal sound switch 13, the extension circuits 4, 5, 6 are via the call switches 14, 15, 16 and the voice synthesis circuit 7 is via the voice synthesis switch 17, respectively. It is connected to the. Further, the control circuit 1, the station line circuit 2, the hook detection unit 41, the voice synthesis circuit 7, and the DP / PB counting units 42, 52, 62 are connected to each other via the control bus 11, and the control circuit The output of 11 is the office line switch 12, the signal tone switch 13, the call switches 14, 15, and 16, the voice synthesis switch 17, the counting switch 421, and the call signal switch 4.
It is led to each control input of 31.

The power from the power supply circuit 8 is supplied to the power supply circuits 44, 54, 64 of the extension circuits 4, 5, 6.

Next, the operation of the exchange system capable of selecting an incoming call with the above configuration will be described.

However, in the present embodiment, the case where the extension telephone set A1 waiting for an incoming call from the extension telephone set A3 receives an incoming call from another extension telephone set A2 will be described as an example. To do.

When the user (caller) of the extension telephone A2 goes off-hook on the extension telephone A2, the hook detector 51 detects the DC current from the power feeding portion 54, and the extension telephone is sent to the control circuit 1 via the control bus 11. The call request of A1 is transmitted.
Based on this call request, the control circuit 1 closes the counting switch 521 of the DP / PB counting section 52, and the extension telephone A2.
In order to detect the dial signal from the caller and to send a dial tone to the calling party, the signal tone switch 13 and the call switch 15 are closed, and the signal tone circuit 13 and the call section 55 of the extension circuit 5 are called. Connect on highway 10. The call highway 10 is exchange-connected by the control circuit 1 by a space switch or a time division switch.

Thus, when the caller who hears the dial tone from the extension telephone A2 performs a dial operation, this dial signal is detected by the DP / PB counting section 52, and the detection signal is transmitted to the control circuit 1. It Based on this detection signal, the control circuit 1 once opens the signal tone switch 13 and detects the completion of the dial operation by the caller,
Signal tone switch 13 and ringing signal switch 4 for extension circuit 4
Close 31 and. As a result, a ringing tone is transmitted from the signal tone circuit 3 to the caller of the extension telephone A2, and a ringing signal is transmitted from the ringing signal transmitter 43 to the extension telephone A1 in the standby state to request an incoming call. Becomes

As a result, a ringing signal is output to the extension telephone set A1, and when the user (callee) of the extension telephone set A1 who hears the ringing tone goes off-hook, the hook detection section 4 is detected.
1 detects this and transmits an incoming call signal to the control circuit 1 via the control bus 11. Based on the incoming call signal, the control circuit 1 opens the calling signal switch 431 of the calling signal sending unit 43 and ends the call to the extension telephone A1. However, the control circuit 1 keeps the signal tone switch 13 closed and continues to send the ringing tone to the extension telephone A2.

Further, the control circuit 1 closes the call switch 14 and the voice synthesizing switch 13 in order to inform the caller of the extension telephone A1 from where the call is coming from, and the call highway 10 is used. Calling section 4 of extension circuit 4
5 and the voice synthesis circuit 7 are connected. After this, the control circuit 1
Outputs a control signal to the voice synthesizing circuit 7 via the control bus 11 and sends a call request message, that is, a message such as "a call request from the extension telephone A2", from the voice synthesizing circuit 7 to the extension telephone A1. ..

The callee of the extension telephone set A1 receiving this call request message, for example, performs hooking when receiving this call, and performs on-hook when rejecting the call. When hooking is performed, the control circuit 1 detects this and sets the communication circuit with the extension telephone set A2 as in the normal operation. Further, when the on-hook is performed, the control circuit 1 detects this, performs the process of rejecting the incoming call, and the extension telephone set A1 returns to the standby state again.

At this time, in order to send a call waiting message to the extension telephone A2 that has made a call, the control circuit 1 opens the signal tone switch 13 to terminate the connection with the signal tone circuit 3. , The voice synthesizing switch 17 is closed, and the voice synthesizing circuit 7 and the call section 55 of the extension circuit 5 are connected. After that, the control circuit 1 outputs a control signal to the voice synthesizing circuit 7 via the control bus 11, and the voice synthesizing circuit 7 sends a call waiting message to the extension telephone A2, that is, "" call to extension telephone A1. Please wait for a while "
Message is sent. As a result, the caller of the extension telephone A2 can recognize that the incoming call is rejected because the extension telephone A1 is on standby, and can take appropriate measures thereafter.

In the above embodiment, the case where the extension telephone set A2 receives an incoming call from the extension telephone set A1 has been described. Thus, the incoming call response can be processed.

[0025]

The exchange system capable of selecting an incoming call according to the present invention is provided with a voice synthesizing circuit which stores a call request message corresponding to an extension telephone and an outside telephone, and makes a call from any extension telephone or an outside telephone to any extension telephone. When a request is made, the call request message read from the voice synthesis circuit is sent to the extension telephone of the called side, and the line connection or line disconnection control is performed according to the correspondence of the extension telephone of the called side. An important requirement is that the phone can reject incoming calls from unrelated parties when it is waiting for an incoming call from a specific party or when it is looking up a phone number in an attempt to make a call. It is possible to reduce useless telephone calls that become an obstacle.

[Brief description of drawings]

FIG. 1 is a block diagram showing an electrical configuration of an incoming call selectable exchange system of the present invention.

[Explanation of symbols]

 1 control circuit 4, 5, 6 extension circuit 7 voice synthesis circuit A1, A2, A3 extension telephone

Claims (1)

[Claims] 1. A system in which a plurality of extension telephones are connected to a private branch exchange, wherein a voice synthesizing circuit storing call request messages corresponding to each extension telephone and an outside line, and any extension telephone or an outside line When an incoming call is received at the extension telephone set, the call request message corresponding to the calling side telephone set is read from the voice synthesizing circuit, the read call request message is sent to the called extension line set, and the called extension set is handled. And a control circuit for controlling line connection or line disconnection according to the above.