JP2001268242A - Private branch exchange - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a private branch exchange, where a supervisor handling a supervisor's board and an operator handling a reception board can make a call without being recognized by a caller, when the operator of the reception board responding to a trunk line call and the caller make a call and the opera tor of the reception board can always hear a voice of the caller, so as to receive a request of the caller without missing under the instruction of the supervisor. SOLUTION: The private phone exchange has a trunk line 51, the reception board 3 receiving an incoming call arrived in the trunk line, the supervisor's board 4 supervising the reception board 3, and a time division switch 21 freely interconnecting the boards 3, 4. A central controller 25 controls the time division switch 21, when receiving a specific request signal from the reception board 3 in a state that the trunk line 51 and the reception board 3 are brought into two-way connection consisting of a reception path and a transmission path to bring the connection state comprising only a reception path P1 between a trunk line 51 and the attendant board 3 and the two-way connection state comprising a reception path P3 and a transmission path P4 between the reception board 3 and the supervisor's board 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention does not transmit a conversation between a telephone reception desk that responds to an incoming call from a private branch exchange and a supervisory desk that monitors and supervises the telephone reception desk to the office line side. A private branch exchange.

[0002]

2. Description of the Related Art Conventionally, in a private branch exchange accommodating a telephone reception desk for responding to an incoming call on a line and a supervisory desk for monitoring and supervising the telephone reception, in the private branch exchange, the telephone reception is connected to a line (calling subscriber). If a telephone connection is made between the telephone reception desk and the supervising desk during a telephone call with the telephone, the telephone reception desk, the supervision desk and the calling subscriber telephone should be connected using a three-way telephone trunk, or A system was adopted in which the telephone line was held on hold and the telephone reception desk and the supervisory board were connected in a two-way call.

[0003]

However, according to the prior art, a conversation with the telephone reception desk is suddenly interrupted by a third party, or the conversation is interrupted due to a hold. Telephone handling business because the caller who is talking on the phone becomes uncomfortable, the serviceability to the caller is low, and the caller is concerned that a third party is listening to the conversation. However, there is a problem that the state becomes unfavorable in view of the correspondence.

Accordingly, it is an object of the present invention to provide a system in which a telephone receptionist responding to a local line incoming call and a caller communicate with the supervisor who handles the supervisory desk and the telephone receptionist without being informed by the caller. Make it possible for the operator at the telephone reception desk to listen to the voice of the caller at all times, so that the operator at the telephone reception desk can always listen to the caller's request and receive the caller's request without fail while receiving instructions from the supervisor. Another object of the present invention is to provide a private branch exchange that improves serviceability for a caller.

[0005]

SUMMARY OF THE INVENTION The present invention is directed to an office line,
In a private branch exchange having a switch for freely connecting a telephone reception desk for receiving an incoming call to an office line and a supervisory desk for supervising the telephone reception desk, the switch is controlled to control the office line and the telephone reception. First connection control means for setting a first connection state in both directions consisting of a reception path and a transmission path between the base station and the base; and receiving a specific request signal from the telephone reception desk in the first control state. Controlling the switch to make the connection between the central office line and the telephone reception desk only a receiving path, and a reception path and a transmission path between the telephone reception desk and the supervisory desk. And a second connection control unit for setting a second connection state in both directions.

[0006]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a diagram illustrating a relay system according to an embodiment of the present invention. In FIG. 1, the private branch exchange 1 includes a private branch exchange 2, a telephone reception desk 3 having a handset 31, and a supervisory board 4 having a handset 41. The private branch exchange 1 is connected to a public network 5, which connects a subscriber telephone 6.

The private branch exchange 1 is a time-division switch 21 for switching a communication path, and is housed in the time-division switch 21 and is connected to the public network 5 via a local line 51 to make a call to the public network 5. A central office trunk 22 having an interface function including a call connection control function such as an incoming call control, and a telephone reception desk which is accommodated in the time division switch 21 and is connected to the telephone reception desk 3 via the digital telephone line 32. A line circuit 23 having an interface function including a call connection control function such as outgoing / incoming control for the terminal 3 and a time division switch 21 and connected to the supervisory table 4 via a digital telephone line 42, Line circuit 2 having an interface function including a call connection control function such as outgoing / incoming control for the communication line 4
4, these time-division switches 21, office line trunks 22,
And a central control unit 25 for controlling the entire private branch exchange 2 including the line circuits 23 and 24.

The digital telephone line 32 connecting the line circuit 23 to the telephone reception desk 3 and the digital line 42 connecting the line circuit 24 to the supervisory board 4 have interface specifications conforming to the I interface. It consists of a speech channel and one control channel.

The operation of the embodiment of the present invention in the relay scheme shown in FIG. 1 will be described below.

FIG. 2 is a first connection diagram for explaining the operation of the embodiment of the present invention. In FIG. 2, when the caller makes a call to the private branch exchange 2 by the subscriber's telephone 6,
An incoming signal arrives at the office line trunk 22 via the office line 51 and the telephone reception desk 3 is called.

When the telephone reception desk 3 responds to this call, under the control of the central control unit 25, the time division switch 21 comprises a receiving path P1 and a transmitting path P2 between the central office trunk 22 and the line circuit 23. A communication path in both directions is set, so that transmission and reception between the subscriber's telephone 6 and the telephone reception desk 3 can be performed. At this time, the line circuit 23 and the telephone reception desk 3 are connected by one communication channel.

In this state, when the operator handling the telephone reception desk 3 needs to make a call with the supervisor handling the supervision board 4, the first identification provided in the telephone reception desk 3 is performed. Operate the button. Then, the central controller 25 reads that the first specific button has been operated via the line circuit 23 and controls the time-division switch 21 to perform a connection switching operation of the communication path. Hereinafter, a description will be given of the connection switching operation of the communication path with reference to FIG.

FIG. 3 is a second connection diagram for explaining the operation of the embodiment of the present invention. In FIG. 3, when the central control unit 25 reads via the line circuit 23 that the first specific button provided on the telephone reception desk 3 has been operated, the central control unit 25 controls the time division switch 21.

This will be described in detail.
The receiving path P1 set between the line circuit 2 and the line circuit 23
Of the transmission path P2, the transmission path P2 is cut off, a one-way communication path composed of the reception path P1 is set between the central office trunk 22 and the line circuit 23, and the line circuit 23 and the line circuit 24 are set. A two-way communication path comprising a reception path P3 and a transmission path P4 is set between them, so that transmission and reception can be performed between the telephone reception desk 3 and the supervisory board 4. At this time, the line circuit 23 and the telephone reception desk 3 are connected by both the one communication channel and the other communication channel, and the communication between the telephone reception desk 3 and the supervisory table 4 is performed by the other communication channel. Will be done.

The telephone reception board 3 adds the sound from the receiving path P1 and the sound from the receiving path P3 so that both sounds can be heard from the handset 31. Therefore, the telephone reception desk 3 has the subscriber telephone 6
, And the sound from the supervision 4 can be heard. Further, the sound from the telephone reception desk 3 is transmitted only to the supervisory board 4, and the voice from the supervisory board 4 is transmitted only to the telephone reception desk 3.

In the connection state shown in FIG. 3, the operator handling the telephone reception desk 3 operates the second specific button provided on the telephone reception desk 3 or the first specific button. Is operated again, the central controller 25 reads, via the line circuit 23, that the second specific button has been operated or that the first specific button has been operated again, and controls the time-division switch 21. Then, a connection return operation of the communication path is performed to the connection state shown in FIG.

[0018]

As described above, according to the present invention, during a telephone call between a telephone reception desk and a caller who has responded to an incoming line call, the supervisor who handles the supervisory board is unaware of the caller. The operator of the telephone reception desk will be able to talk and the operator of the telephone reception desk will always be able to listen to the caller's voice. Can be accepted without omission, so that the serviceability to the caller can be improved.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a relay system according to an embodiment of the present invention.

FIG. 2 is a first connection diagram illustrating an operation of the exemplary embodiment of the present invention.

FIG. 3 is a second connection diagram illustrating an operation of the exemplary embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Private telephone exchange equipment 2 Private telephone exchange 21 Time-division switch 22 Central office trunk 23 Line circuit 24 Line circuit 25 Central control unit 3 Telephone reception desk 31 Handset 4 Supervisory board 41 Handset 5 Public network 6 Subscriber telephone

Claims (2)

[Claims] 1. A private branch exchange having a central office line, a telephone reception desk for receiving an incoming call to the central office line, and a supervisory director for supervising the telephone reception desk. A first connection control means for controlling a connection between the central office line and the telephone reception desk in a first connection state in both directions including a reception path and a transmission path; and in the first control state, When a specific request signal is received from the telephone reception desk, the switch is controlled, and the connection between the central office line and the telephone reception desk is set to the connection state of only the reception path, and the telephone reception desk and the supervisory board are connected. And a second connection control means for setting a second connection state in both directions including a reception path and a transmission path. Further, in the first control state, when another specific request signal is received from the telephone reception desk, the switch is controlled to return the connection state to the first connection state. The private branch exchange according to claim 1, further comprising connection control means.