JPS588791B2 - Mass command telephone connection circuit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a connection system for a simultaneous command telephone connection circuit.

In the conventional simultaneous command telephone connection system, the dispatchee's telephone is usually housed in the exchange subscriber terminal as a general extension telephone, and only at the time of simultaneous command, the command desk operator presses the selection button on the simultaneous command board DRBD to connect the simultaneous command telephone. It is used by switching to the side.

Therefore, if you want to start a mass command while the dispatchee's telephone is being used as an extension telephone, interrupt the extension telephone in use, make a command warning tone or a command warning call, terminate the extension call, and then issue a mass command. It is necessary to switch to the calling side.

A conventional relay system for simultaneous command telephone connection is shown in FIG. 1, and its main circuit is shown in FIG.

In Fig. 1, 1 indicates the dispatched person, 2 indicates the subscriber's trunk, 3 indicates the warning sound source, 4 indicates the command console, 5 indicates the command console seat device, 6 indicates the exchange, and 7 indicates the trunk within the local office. , 8 indicates the commander.

When attempting to start a simultaneous command while the dispatcher telephone is being used as an extension telephone, each dispatchee trunk (SUBT) 2 indicates whether each dispatchee line is empty or busy, as shown in Figure 2. is supposed to be monitored.

In other words, when the dispatchee line is free, the relay M of the dispatchee trunk (SUBT) 2 corresponding to the press of the selection button
10N,T. TA is turned on in order, relay RTA (not shown in the figure) is activated, and a call signal is sent to the person being instructed.If the bus is busy, relay M and ON are activated, but relay T is not connected to the switchboard. Air is supplied to the BL terminal by the CO contact on the side, and the telephone is unable to operate because the busy display is displayed, and the telephone is connected to the command notice sound source via the m contact, and the circuit configuration in which the command notice sound is sent out. It became.

Therefore, this circuit (a) shows a busy display (C) from the exchange side.
(2) It is difficult to apply to exchanges such as electronic exchanges where the busy display is in the form of a memory map, as it requires (2) a command warning sound transmission control performed on each individual commandee's trunk; (c) Since the command line and the command warning sound transmission circuit are separate systems, two common amplifiers are needed.
It has disadvantages such as requiring multiple sets.

SUMMARY OF THE INVENTION An object of the present invention is to provide a simultaneous command telephone connection circuit which eliminates these drawbacks.

According to the present invention, in a simultaneous command telephone in which a dispatcher gives commands to a plurality of commandees all at once, the telephone of the commandees is normally used as an extension telephone, and is switched to a command receiving telephone only during the simultaneous command. On the other hand, before switching, a warning tone is sent out via the common amplifier for commands, and after announcing the simultaneous command to the subscribers who are using it as an extension telephone, the commanded telephone is forcibly switched to the command reception telephone, and the telephone being off-hook is It continues to send the command standby sound to the commandee, sends a call signal to the on-hook commandee, sends the command standby sound in response to the commandee's response, and stops the command standby sound when the dispatcher starts commanding. , a simultaneous command telephone connection circuit is proposed, which is characterized in that simultaneous commands can be made, and thereafter, when the commandee goes on-hook, the telephones are restored to individual extension telephones.

Embodiments of the simultaneous command telephone connection circuit according to the present invention will be described in detail below.

FIG. 3 shows a relay system for simultaneous command telephone connection according to the present invention.

In this figure, parts indicated by the same symbols as in Figure 1 are
Blocks with the same functions as in the figure are shown.

As shown in Fig. 3, the features of the present invention are that the command warning tone (TONE) 9 is a simultaneous command seat system (DROPS).
10 to serve as both a command communication path and a command warning sound transmission circuit.

The main parts of the simultaneous command telephone connection circuit according to the present invention are shown in FIG.

In the present invention, in order to enable the sending of a command notice sound without monitoring whether each commandee's line is idle or busy, the command notice sound is sent for a certain period of time, and then the commandee's lines are forcibly switched to the command side all at once. method.

In FIG. 4, when the operator of the DRPOS 10 takes off the operator's telephone 21, the A relay 22 and the relay 23 are activated, and the DRPOS 11 is turned on.

Then, when the commandee selection button "n" 24 is pressed, the RTA relay 25 of the corresponding commandee trunk (SUBT) 12 is pressed.
is operating and the command desk seat system (DRPOS) 10 STR
Activate the relay 26.

At this time, the S relay 27 of the command desk seat system 10 (DRPOS) is operating while the selection button 24 is pressed down, but when the selection button 24 is released, it is restored and the contact S and the contact str of the STR relay 26 are connected. The TM relay 28 is excited under the conditions.

The TM relay 28 is a slow-acting relay, and for a certain period of time, for example, 10 seconds, the command desk seating device (DR
Since the T relay 29 of the POS (POS) cannot operate, only the RTA relay 25 of the commandee trunk (SUBT) 12 is in operation.

At this time, if the dispatchee is using it as an extension telephone, it is connected to the A relay 22 of the command desk seat system (DRPOS) 10 and passed through the common amplifier 30 to each dispatchee trunk (SU).
Since the command warning sound distributed to the BT) 12 is coupled through the contact rta of the RTA relay 25 and the resistors RA and RB, the command warning sound can be heard.

While the operator is sequentially pressing the selection buttons 24 to set the commandee, the timing of the TM relay 28 is restored by the operation of the S relay 27 when the selection button is pressed, so that after a certain period of time after all the commandee settings are completed. The TM relay 28 operates and activates the T relay 29 of the command desk seat system (DRPOS).

The contact point t of this T relay 29 operates only the T relay of the trunk (SUBT) 12 corresponding to the person being instructed, and the telephones of the persons being instructed are switched to the simultaneous instruction side.

Since the RTA relay 25 also serves as a call signal sender, the fourth
A ringing signal is sent to the commandee via the ring trip circuit, which is omitted in the diagram, but if the commandee is off-hook, the ring trip circuit activates the A relay and then the B relay. , RTA relay 2
5 is restored and the dispatchee's telephone is connected to the simultaneous dispatcher.

When the operator presses the command start button 31, the ST relay 32 is operated, and its contact st stops the command warning sound, allowing a command call to be made.

Further, instead of the command warning sound, it is also possible to make a command warning from the operator or the dispatcher as an interrupt call.

Note that in FIG. 4, resistors RA and RB are inserted to reduce call loss on the interrupt call path, and are not necessarily required.

As explained in detail above, the circuit according to the present invention (a) can be easily applied to electronic exchanges, etc., since it does not require a busy display on the exchange, and (b) command warning sound transmission control can be commonly used. The circuit of each subscriber trunk (SUBT) is simplified because it is carried out in a single section (7 relays are required in the conventional system, but 4 in the present invention), and the overall system is economical. (c) Since the command communication path and the warning sound transmission circuit are common, the disadvantages of the conventional method are not only solved, such as only one set of amplifiers are required, but also (d) when the operator and the dispatcher are different. However, since the command warning sound can also be heard by the dispatcher, it is easy to understand the control status, and (e) both the operator and the dispatcher can make a command warning call as an interrupt call instead of the command warning sound. The effect of such a circuit is enormous.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a conventional mass command telephone connection circuit, FIG. 2 is a main circuit diagram of the block diagram of FIG. 1, and FIG. 3 is a block diagram of a mass command telephone connection circuit according to the present invention. , FIG. 4 is a main circuit diagram of the process diagram of FIG. 3. In the figure, 9 is a warning sound source, 10 is a command desk seat device, 1
1 is a command console, 12 is a subscriber trunk, and 30 is a command common amplifier.

Claims (1)

[Claims] 1. When a dispatcher gives commands to multiple dispatchees at once, the dispatchee's telephone is normally used as an extension telephone, and is switched to a command reception telephone only at the time of simultaneous dispatch. A warning sound is sent via the common amplifier for commands, and after announcing the simultaneous command to the subscribers who are using it as an extension telephone, the commandee's telephone is forcibly switched to a command receiving telephone, and the commandee who is off-hook is notified of the command. sends out a twitching command standby sound, sends a call signal to the on-hook commandee, sends out a command standby sound in response to the commandee's response, stops the command standby sound when the dispatcher starts commanding, and then all at once. A simultaneous command telephone connection circuit characterized in that the command becomes possible and thereafter the telephone extension is restored individually by the commandee's on-hook.