JPS63151249A - Interruption/monitor system for attendant cabinet connection in exchange - Google Patents

Abstract

PURPOSE:To simplify the program control of pulse connection for interruption/ monitor for a 4th party by providing a changeover two-way talking or one-way talking changeover means separating the 4th party and an interrupted call to a board talking trunk. CONSTITUTION:A changeover section 61 to disconnect lines for subscribers A, B and an operator OP and a line for a supervisor S and a changeover section 62 selecting and switching two-way talking and one-way talking are provided in the board talking trunk 6. When the supervisor S is going to monitor the three party call among the subscribers A, B and the operator OP, the switch section 61 is connected and the switch section 61 is switched to one-way talking position. When the supervisor S interrupts the three party talking among the subscribers A, B and the operator OP, the switch section 61 is switched to two-way talking position. The changeover is executed by the drive (SD) control of the changeover section in a board talking trunk 6 based on a command from s central unit control 7.

Description

[Detailed Description of the Invention] [Summary] When a fourth party interrupts/monitors a machine connection call,
The interrupt function is provided in the trunk for machine calls, and in the case of an interrupt, the fourth party makes a two-way call for a three-party call, and in the case of a monitor, the fourth party makes a one-way call. Interrupt/monitor method when connecting a machine to programmatically control connection switching within the trunk.

[Industrial application field]

The present invention relates to an interrupt/monitor system when a switch is connected in an exchange.

Telephone exchange services include services such as dial number 114, in which a switchboard operator intervenes from a switchboard in a switching center to connect subscribers. That is, 114 from subscriber A
The switchboard operator at the exchange responds to the number dialed, and subscriber A
Find out which party you want to call: subscriber B, and then call subscriber B.
After that, a connection is established between subscribers A and 3.

In such a service, at the station, subscribers A, B,
A fourth person acting as a supervisor can interrupt or monitor the three-way call between the switchboard operator and the switchboard operator, thereby supervising the switchboard operator and assisting his work.

[Conventional technology]

FIG. 7 is a diagram illustrating a conventional fourth party interrupt/monitor method. This is for a space-division type switch; in the figure, 1 is a space-division network, 2 is a trunk for telephone calls with three terminals, and network 1 has subscribers A, B, switchboard operator OP, and supervisor. The S line is
In addition, the three terminals of trunk 2 are connected to subscribers A, B,
Each of the lines of the operator OP is accommodated. As shown in the figure, the supervisor S connects the line of the supervisor S to the lines of the other three parties in the network 1 by means of a switch, so that the supervisor S can make a three-way call between the subscribers A, B, and the operator OP. 3) or interrupting the monitor.

On the other hand, in a time-sharing digital switch, the supervisor S
It is difficult for the third party to interrupt a three-way call in the time-sharing network 3. Therefore, as shown in Figure 8,
In addition to the trunk 4 for connecting the machine, a trunk 5 for 3-party calls having 3 terminals is prepared, and the trunk 5 for connecting subscribers A, B, and the operator
In the case of a three-party call, the connections within the network 3 are controlled by a program so that the operator OP is connected as shown by the dotted line in the figure and the three parties are accommodated in the trunk 4 for telephone calls. On the other hand, if supervisor S interrupts, operator O
The connections in the network 3 are controlled programmatically so that both P and the supervisor S are accommodated in the trunk 5 for three-party calls, and the trunk 5 for three-party calls is connected to the trunk 4 for stand-alone calls.

[Problem that the invention seeks to solve]

In order to interrupt/monitor a supervisor using a time-sharing type digital exchange as shown in FIG. 8, one additional trunk for three-way communication is required, which increases the number of parts. Further, the process of switching the switchboard's line within the network is programmatically controlled by the central control unit that controls the network, but this path switching control complicates the control program of the central control unit. Furthermore, the supervisor's interruption/monitoring is performed by subscribers A and B who are currently connected normally.
, because it interrupts the operator OP's three-way call,
If there is a failure in the trunk for a three-way call or a failure in the path switching control program, the normally connected three-way call will be placed in a failure state due to a supervisor's interruption, and the current call will be interrupted. Call coverage is not 100%.

[Means for solving problems]

FIG. 1 is a block diagram of the principle according to the present invention.

The interrupt/monitor method according to the present invention separates the fourth party S and the interrupted call in the trunk 12 for telephone calls in the exchange 10 configured to allow a fourth party to interrupt a three-party call. The first switching means 13 and the fourth party S
A second switching means 14 is provided for switching between a two-way call or a one-way call between the call and the interrupted call.

[For production]

In the exchange shown in FIG. 1, during a three-way call, the second switching means 14 disconnects the fourth party S, and when monitoring a three-tone call, the first switching means 13 is switched to a one-way call.
When interrupting a call between parties, the first switching means 13 is switched to a two-way call.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 2 is a block diagram conceptually illustrating a time division type digital exchange that performs an interrupt/monitor method as an embodiment of the present invention. In the figure, 3 is a time division network, 6 is a trunk for telephone calls, 7 is a central control unit, 8 is a communication path information receiving and distributing device, and 9 is a signal distributing device. The telephone trunk 6 has four terminals and is connected to the lines of subscribers A, B, operator OP, and supervisor S, respectively. This telephone trunk 6 includes a switching unit 61 for separating the lines of subscribers A, B, switchboard operator OP and supervisor S, and a switching unit 61 for selecting and switching between two-way calls and one-way calls. A switching section 62 is provided. The two-way call side of the switching unit 62 is selected when the supervisor S interrupts a call between subscribers A, B, and the operator OP, and the one-way call side is selected when the supervisor S monitors the three parties. .

FIG. 3 is a diagram illustrating an overview of the functions of the telephone trunk 6. As shown in FIG. In the figure, 601 to 604 are subscribers A and B, respectively.
, a D/A converter or buffer into which the lines of the operator OP and the supervisor S are input, 611 to 614 are output to the line of the operator OP and the supervisor S. The D/A converters 601 to 604 each have an enable terminal E, and when the enable terminal E is "1", a D/A conversion output is sent out;
0”, it sends out a “0” level output.Similarly, A
/D converters 621 to 624 also have enable terminals E,
When this terminal E is “1”, A/D conversion operation is performed and 0
”, the input and output are blocked and the communication path is cut off.

FIG. 4 shows the levels of the control signals ab, , P, SS, and SR applied to the enable terminals E of the D/A converters 601 to 604 and A/D converters 621 to 624 in FIG. 3, and the levels achieved thereby. This shows the functions that can be used. In the figure, ■ is 2
■ is a three-party call, ■ is a three-party call + supervisor's monitor, and ■ is a four-party call interrupted by a supervisor.

In the device of this embodiment, in a normal case where only a three-way call between subscribers A and B and the operator OP is being made, the switching section 61 is in a state where the supervisor S is disconnected. When the supervisor S wants to monitor a three-way call between subscribers A, B, and operator ○P, he puts the switching unit 61 in a connected state and switches the switching unit 61 to the one-way call side. Further, when the supervisor S interrupts a three-way call between subscribers A, B, and the operator OP, the switching unit 61 is switched to the two-way call side. These switching operations are performed by driving a switching section in the telephone trunk 6 based on commands from the central controller 7 (SD).
This is done through control, etc.

This SD control function can be controlled completely independently of the call functions of subscribers A, B and other terminals of the operator OP.

In this way, if the SD function for controlling the interrupt/monitor function can be controlled completely independently from the call function of other terminals (A, B, OP), it will be possible to control the interrupt/monitor function completely independently from the call function of other terminals (A, B, OP).
Monitor trunk control state diagrams can be created independently, the number of state diagrams can be reduced, and the burden on program creation is reduced.

Figures 5 and 6 are diagrams for explaining the above.
The figure is a trunk control state diagram for interrupt/monitor stand calls, and FIG. 6 is a trunk control state diagram for general three-party talk stand calls, and these state diagrams can be created independently.

〔Effect of the invention〕

According to the present invention, program control of path connections for fourth-party interrupt/monitoring is simplified, and the burden on program creation is reduced. Furthermore, the communication between subscribers A, .

[Brief explanation of the drawing]

FIG. 1 is a principle block diagram of the present invention, FIG. 2 is a diagram conceptually showing an exchange implementing an interrupt/monitor method as an embodiment of the present invention, and FIG. 3 is a block diagram of the platform in FIG. FIG. 4 is a diagram showing the signal levels for operating the device; FIG. 4 is a diagram showing the signal levels for operating the device; FIGS. 5 and 6 are state diagrams; FIGS. FIG. 2 is a diagram illustrating a conventional method. 3-Network 6 One telephone trunk 7-Central control device 8-Call path information reception and distribution device 9-Signal distribution device

Claims (1)

[Scope of Claims] In an exchange configured to allow a fourth party to interrupt a three-party call, a communication trunk (12) for two-way communication between the fourth party (s) and the interrupted call is provided. a first switching means (13) for switching to a call or a one-way call; and a second switching means (13) for separating a fourth party and an interrupted call.
4), when a three-way call is made, the second switching means (14) disconnects the fourth party (s), and when monitoring a three-way call, the first switching means (13) is used for a one-way call. An interrupt/monitor method when a stand is connected in an exchange, the first switching means (13) being configured to switch to a two-way call when interrupting a three-way call.