JPS5935230B2 - Mutual communication system during simultaneous commands - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mutual communication system for simultaneous commands in an automatic telephone exchange.

In conventional automatic telephone exchanges, when the call content handled by a reception desk is to be given to a large number of other reception desks or to all called subscribers at the same time, it is transmitted from the reception desk requesting the command to the other reception desk via a high-impedance amplifier. Alternatively, they unilaterally issued commands to called subscribers.

Here, the high impedance is used to minimize interruption losses when interrupting the reception desk, and the amplifier is used to compensate levels for each of the multiple called parties. By the way, in such a simultaneous command system, if a call request is made from the called party to the reception desk while the simultaneous command is being carried out, conventionally the called party requests the reception desk by hooking. After the call was completed, hooking was performed again to restore the original simultaneous command status. However, such a method has the disadvantage of complicating the operations of the called party. SUMMARY OF THE INVENTION An object of the present invention is to provide a system in which called parties can easily communicate with a reception desk during simultaneous commands.

According to the present invention, in a system in which the contents of a call handled by a reception desk of an automatic telephone exchange are simultaneously instructed to a large number of other reception desks or called subscribers, the reception desk responds to a command request from the reception desk. A monitor trunk that has a high impedance to the machine communication path and has an amplifier that constitutes a large number of subscriber terminals on the outgoing side connects the main link to a trunk within the own office to a large number of machines or called subscribers at the same time. The other machine or the called party requests an interrupt, and the called party's interrupt request signal is turned into a polarization signal after the called party responds in the local trunk, and is transmitted via the main link. the monitor trunk, and in the monitor trunk, the call path in the monitor trunk for which the interrupt request was received by the polarity reversal signal is directly transferred to the reception desk call path without going through the amplifier; A mutual communication system for simultaneous commands is proposed, which is characterized in that it enables interrupting mutual communication to a reception desk.

Hereinafter, an embodiment of the mutual communication system at the time of simultaneous command according to the present invention will be described in detail with reference to the drawings.

FIG. 1 shows an embodiment of the system according to the present invention, in which 1 is a main link, 2 is a reception trunk, 3 is an operator trunk, 4 is a reception desk, 4a is a circuit network, 5 is a monitor trunk, 5a is an amplifier, 6 is an internal trunk, 7 is another reception desk, 7a is a circuit network, 7b is an interrupt circuit, and 8 is a subscriber.

In the circuit shown in FIG. 1, when the reception desk trunk 2 receives simultaneous command information, it is sent to the reception desk 4 via the operator trunk 3 via the main link 1. The reception desk 4 forcibly and unilaterally sends out the simultaneous command information to other reception desks 7 and subscribers 8 via the high input impedance amplifier 5a of the monitor trunk 5, the main link 1, and the local trunk 6. Next, the operation when an interrupt request is received from another receiving desk or a called subscriber will be explained with reference to FIGS. 2, 3, 4, and 5.

FIG. 2 shows an interrupt circuit, which is provided inside the subscriber circuit or reception console. FIG. 3 shows a circuit for interrupts in the trunk of the own station, FIG. 4 shows a circuit for interrupts in the monitor trunk, and FIG. 5 is an operation time chart of the circuit in FIG. 4. First, when the reception desk or the called subscriber requests an interrupt, the interrupt switch 11 shown in FIG. 2 is turned on and a call is made.

On the other hand, since the D relay 12 and the NT relay 13 in FIG. 3 each have a winding start indicated by a black dot in the figure, when earth air is applied by the interrupt switch 11, the NT relay receives current only in one of them. The contact Nt is activated and the polarity of the current flowing from the A relay 14 to the main link is reversed. The inverted signal is then sent to the monitor trunk shown in FIG. 4 via the main link. On the other hand, in the monitor trunk in FIG. 4A, 16 is an oscillation relay and E.

Relay 15 is a called party response monitoring relay, and when the called party goes off-hook, this relay operates and its contact E is activated. l,
eO2 and eO3 are turned on, amplifier 5a is inserted, and the simultaneous command is transmitted to the called party. E because when the called party interrupts, an inverted signal is input. relay 1
5 becomes inactive, the LO relay 15 is activated, and its contacts 1, 1, 102 are activated, and the call from the called subscriber is transferred to the reception desk by upping the amplifier 5a.

Figure 4B is E. Relay 15 and L. A memory that maintains the operating state of the relay 16, and the operation time chart of the relays LO, EO, and EOA in FIGS.
As shown in the figure. In FIG. 5, a is L.

b is E for the operating state of the relay. The operating state of the relay is C
is E. The operating state of the A relay is indicated, and d indicates the operation of the called party in the interruption. As explained in detail above, according to the present invention, the called party can easily interrupt and talk to each other when a simultaneous command is given, so that the present invention is highly effective in automatic telephone exchanges.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of one embodiment of the mutual communication system at the time of simultaneous command according to the present invention, Fig. 2 is a detailed circuit of the interrupt circuit in Fig. 1, and Fig. 3 is a block diagram of the internal communication system in Fig. 1. FIG. 4 shows a circuit diagram of the monitor trunk in FIG. 1, and FIG. 5 shows an operation time chart of the system according to the present invention.

Claims (1)

[Claims] 1. In a system in which the contents of a call handled by a reception desk of an automatic telephone exchange are simultaneously instructed to a large number of other reception desks or called subscribers, in response to a command request from the reception desk, the reception desk responds to the reception desk communication path. On the other hand, the outgoing side has a high impedance, and from the monitor trunk which has amplifiers that constitute many subscriber terminals, commands are sent simultaneously to a large number of units or called subscribers via the main link and the trunk within the own station. or the called party's interruption request is made by converting the called party's interrupt request signal into a polarization signal after the called party responds in the trunk within the home office, and transmitting the signal to the monitor trunk via the main link. and interrupting the reception console by directly transferring the communication path in the monitor trunk for which an interrupt request was made by the polarity reversal signal to the reception desk communication path without going through the amplifier. A mutual communication system during simultaneous commands, which is characterized by enabling mutual communication.