JPH01194738A - Emergency outgoing connection control system - Google Patents

Abstract

PURPOSE:To perform transmission from a command receiving terminal in receiving a general command to a general command board at need by connecting a subscriber circuit to house the command receiving terminal to two pairs of housing terminals in a time divisional network, and providing a control processor and a change-over switch in the subscriber circuit. CONSTITUTION:In case of requiring an emergency call to the general command board 2b by the command receiving terminal 3-1 while the general command being issued from the general command board 2a, hooking is performed. When the hooking is detected at the subscriber circuit 15-1, it is transmitted to the control processor 151. The processor 151 connects the command receiving terminal 3-1 to the housing terminals Tb-11 and Tb-12 in the time divisional network 11, and performs the display of incoming from a general command board circuit 13b to the general command board 2b. A central control unit 12 detects the response of the general command board 2b via the command board circuit 13b, and sets speech paths P7 and P8. The command receiving terminal 3-1 performs the emergency call with the general command board 2b via the speech paths P7 and P8.

Description

[Detailed Description of the Invention] [Summary] This invention relates to a digital exchange, and in particular, in a digital exchange that accommodates a simultaneous command center, it is possible to make an emergency outgoing connection from a command receiving terminal that is receiving simultaneous commands from the simultaneous command center. Regarding the emergency call connection control method, the purpose of this is to enable transmissions from the command receiving terminal that is receiving the mass command to the mass command center at any time, by accommodating the command receiving terminal in the digital exchange that accommodates the mass command console. a switching means for connecting each subscriber circuit to two sets of accommodation terminals of the digital exchange, and switching and connecting each receiving terminal accommodated in each subscriber circuit to one of the two sets of accommodation terminals; Detecting that the command receiving terminal has made an emergency call while receiving a simultaneous command from the simultaneous command center via one accommodation terminal, and controlling the switching means to switch,
A control means for causing the order receiving terminal to send a message to the digital exchange via the other accommodation terminal is provided.

[Industrial application field]

The present invention relates to a digital switching system, and more particularly to an emergency call connection control system that enables an emergency call connection from a command receiving terminal that is receiving a simultaneous command from a simultaneous command board in a digital switch that accommodates a simultaneous command board.

When a call path is set for each of the multiple command receiving terminals from a simultaneous command center housed in an exchange that uses a space-divided network, commands are transmitted from the simultaneous command center to each command receiving terminal via the communication path. At the same time, it is also possible to make, for example, an emergency call from each order receiving terminal to the command center via the same communication path.

This type of emergency call is also required in digital exchanges that use time division networks.

[Conventional technology]

FIG. 4 is a diagram showing an example of a conventional digital exchange.

In FIG. 4, the digital exchange 1 is connected to a time division network 1.
- It is equipped with a work (NW) 11 and a central control unit (CC) 12 that sets a communication path on the time division network 11, and also has a simultaneous command center 2a via command center circuits (AC) 13a and 13b. and 2b, and further accommodates subscriber circuits (LC) 14 (specific subscriber circuits are 14-1 to 1
4-4 (hereinafter the same) accommodates an order receiving terminal 3 or a terminal 4.

Now, when a request is made to send a command from the command board 2a to the command receiving terminals 3-1 to 3-3, the central control device 12 transmits a command to the command board 2a of the command board circuit 13a in the time division network 11. and accommodation terminals Tff2 to Tff2 to transmit received signals to each of the order receiving terminals 3-1 to 3-3 of each subscriber circuit (LC) 14-1 to 14-3. Communication paths p to p3 are set up between T'sg and the simultaneous command calls sent from the simultaneous command desk 2a are sent to each command receiving terminal 3-1 to 3-3 via each communication path pI to p. -3 can be transmitted.

Note that the accommodation terminals T31 to TS1 of each subscriber circuit 14-1 to 14-3, which transmit the transmission signals from each command receiving terminal 3-1 to 3-3, and the simultaneous command board 2a of the command board circuit 13a Due to the structure of the time division network 11, it is impossible to connect the accommodation terminal Tb□ in parallel to transmit the received signal to the time division network 11.

Therefore, even if, for example, an order recipient from the order receiving terminal 3-1 needs to make an emergency call to the simultaneous command desk 2a while a simultaneous command is being executed, the order receiving terminal It is impossible to make an emergency call directly from 3-1 to the simultaneous command desk 2a, and a call is made from the terminal 4 located near the command receiving terminal 3-1 to the simultaneous command desk 2b attached to the simultaneous command desk 2a. The central control device 12 is connected between the accommodation terminal T61 of the subscriber circuit (LC) 14-4 that accommodates the terminal 4 and the accommodation terminal T2□ of the command board circuit 13b that accommodates the simultaneous command board 2b, as well as It was necessary to set communication paths p4 and p, respectively, between the accommodation terminal T2I of the base circuit 13b and the accommodation terminal T6□ of the subscriber circuit 14-4.

[Problem to be solved by the invention]

As is clear from the above explanation, in conventional digital exchanges, there is no way to make a call from the command receiving terminal 3-1 to the simultaneous command desk 2a during the execution of a simultaneous command, and the receiving party can call the nearby terminal 4. There is no other option but to call the command desk 2b all at once, which is disadvantageous in terms of speed and convenience.

SUMMARY OF THE INVENTION An object of the present invention is to enable a command receiving terminal which is currently receiving a general command to transmit it to a simultaneous command desk at any time.

[Means to solve the problem]

FIG. 1 is a diagram showing the principle of the present invention.

In FIG. 1, 1 is a digital exchange, 2a and 2
Reference numeral b denotes a simultaneous command board, 3 a command receiving terminal, and 5 a subscriber circuit accommodating the command receiving terminal 3.

Each subscriber circuit 15 is connected to two sets of accommodation terminals Tb and Tb of the digital exchange t, respectively.

100 is a switching means provided in the subscriber circuit 15 according to the present invention.

Reference numeral 200 denotes control means provided within the subscriber circuit 15 according to the present invention.

(Operation) The switching means 100 connects each order receiving terminal 3 accommodated in the subscriber circuit 15 to two sets of accommodation terminals T3 and T.

Switch and connect to either one.

The control means 200 controls whether the order receiving terminal 3 is connected to one accommodation terminal (T
a or Tb)), the switching means 10
0 is switched and controlled, and the command receiving terminal 3 is switched to the other accommodation terminal (T
a or Tb) to the digital exchange 1.

Therefore, it is possible to send a message at any time from the command receiving terminal that is receiving the simultaneous command, improving promptness and convenience.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 is a diagram showing a digital exchange according to an embodiment of the present invention, and FIG. 3 is a diagram illustrating a subscriber circuit in FIG. 2. Note that the same reference numerals refer to the same objects throughout the plan.

In FIG. 2, each subscriber circuit (LC) 15 accommodating the order receiving terminal 3 is connected to a time division network (NW) 11.
Two sets of accommodation terminals Tb and 'rb (accommodation terminals corresponding to a specific subscriber circuit (for example, 15-1) are T-++ (transmission signal transmission side from order receiving terminal 3-1), respectively)
, 'r, -, □ (reception signal transmission side from order receiving terminal 3-1) and 'rb-++ (transmission signal transmission side from order receiving terminal 3-1), Tb-1□ (order receiving terminal 3 1), the same shall apply hereinafter],
Further, in FIG. 3, a changeover switch 153 is provided in each subscriber circuit 15 as the switching means 100 in FIG. 1, and a control processor (LPR) 151 is provided as the control means 200 in FIG. There is.

In FIGS. 2 and 3, when the receiving terminal 3 is in a no-call state and the central controller (CC) 12 has set both accommodation terminals Ta and Tb to an empty state, the control processor 151 sets the switching signal S transmitted to the changeover switch 153 to logic "O", sets the changeover switch 153 to the recovery state (the state shown in the figure), and connects the receiving terminal 3 to the line interface circuit (tlF) 152, two wires and four wires. Conversion circuit (
HYB) 154a and code/decoding circuit (CODEC) 1
55a, the accommodation terminal T of the time division network 11
Connected to side b.

In such a state, when the simultaneous command console 2a requests simultaneous command connection to the command receiving terminals 3-1 to 3-3, the central control device 12 connects the command console circuit (
AC) 13a, an accommodation terminal Tb that transmits the transmission signal from the simultaneous command desk 2a, and each subscriber circuit 15-1 to 15-
Communication paths pl to p are set between one of the accommodating terminals 'L-+z to T8-3□ of the subscriber circuits 15-1 to 15-3, and each accommodating terminal T1 of each subscriber circuit 15-1 to 15-3 is placed in a busy state. do. Note that each accommodation terminal Tb of each subscriber circuit 15-1 to 15-3 is
Leave it as a vacant room.

As described above, each of the command receiving terminals 3-1 to 3-3 receives the simultaneous command call sent from the simultaneous command desk 2a via each of the communication paths p to p3.

During the execution of a simultaneous command, for example, if a recipient using the order receiving terminal 3-1 needs to make an emergency call to the simultaneous command desk 2b attached to the simultaneous command desk 2a, while the simultaneous command is being received. The order receiving terminal 3-1 performs a predetermined lu action for emergency call, such as fu-knocking.

In the subscriber circuit 15-1, the line interface circuit 152 monitors the on-hook and off-footer of the receiving terminal 3-1, and when it detects that the receiving terminal 3-1 has performed hooking, The detection signal d (logic "1") is transmitted to the control processor 151.

The control processor 151 that has received the detection signal d sets the switching signal S to be transmitted to the changeover switch 153 to logic "1", operates the changeover switch 153, and switches the command receiving terminal 3-1.
The line interface circuit 152, two-wire four-wire conversion circuit (
HYB) 154 b and code/decoding circuit (CODEC)
155b to the accommodation terminal T of the time division network 11
b-, , and Tb-, □ side, and the emergency call request signal e corresponding to the accommodation terminal Tb, which is transmitted to the central control unit 12 via the time division network 11, is set to logic "1".

Upon receiving the emergency call request signal eb (logic "1"), the central control unit 12 identifies the accommodation terminal Tb of the subscriber circuit 15-1 that is the source of the emergency call request signal e and sets it to a busy state. In addition to displaying an incoming call from the command board circuit 13b that accommodates the simultaneous command board 2b to the simultaneous command board 2b, there is an accommodation terminal TbI for connecting the ringing sound source 16 in the time division network 11, and a subscriber circuit (LC). A communication path p6 is set between the receiving terminal Tb-1□ of 15-1, and the calling sound source 1
6 sends a ring tone to the communication path ph and the subscriber circuit 1.
5-1 to the command receiving terminal 3-1.

When the simultaneous command desk 2b notices the incoming call and responds, the central control device 12 sends the message to the simultaneous command desk 2 via the command board circuit 13b.
b response is detected, and the reception terminal Tb-11 of the subscriber circuit 15-1 and the command board circuit 13 are connected in the time division network 11.
b, and between the accommodation terminal T21 of the command board circuit 13b and the accommodation terminal Tb- of the subscriber circuit 15-1.
1, respectively, and release the already set communication path p6.

Thereafter, the order receiving terminal 3-1 can make an emergency call to the simultaneous command desk 2b via the communication paths p and p8 in the time division network 11.

Note that even while the command receiving terminal 3-1 and the simultaneous command desk 2b are communicating, the communication path p in the time division network 11 is still set, so that the simultaneous command sent from the simultaneous command desk 2a The call is sent to the subscriber circuit 15 via the call path p.
-1 code decoding circuit 155a and two-wire four-wire conversion circuit 1
54a, but the selector switch 1 is in the operating state.
53, transmission to the order receiving terminal 3-1 is blocked.

The person receiving the order using the receiving terminal 3-1 ends the emergency call and performs a predetermined operation for ending the emergency call, for example, a hunking operation.

In the subscriber circuit 15-1, when the line interface circuit 152 detects that the order receiving terminal 3-1 has been hunched and transmits the detection signal d (logic "0") to the control processor 151, the control processor The processor 151 sets the switching signal S transmitted to the changeover switch 153 to logic "0" to restore the changeover switch 153, and the order receiving terminal 3-
1 to the accommodation terminals T1-, and T1-1□ of the time division network 11 via the line interface circuit 152, the two-wire/four-wire conversion circuit 154a, and the code decoding circuit 155a.
An emergency call request signal e is transmitted to the central control unit 12 via the time division network 11.
, is set to logic "0".

Upon receiving the emergency call request signal el, (logic "O"), the central control unit 12 identifies the accommodation terminal Tb of the subscriber circuit 15-1, which is the source of the emergency call request signal e, and sets it to an empty state. Then, the communication paths p7 and p8 set in the time division network l■ are released.

Thereafter, the command receiving terminal 3-1 receives the simultaneous command call transmitted from the simultaneous command desk 2a via the communication path p1 in the time division network ll.

Note that if the simultaneous command call from the simultaneous command desk 2a has already ended at the time when the receiving terminal 3-1 ends the emergency call, the central control unit 12 is connected to the accommodation terminal of the subscriber circuit 15-1. Tb becomes vacant at the end of the emergency call.

As is clear from the above description, according to this embodiment, the subscriber circuit 15 accommodating the order receiving terminal 3 is connected to two sets of accommodating terminals T4 and Tb of the time division network 11, and By providing the control processor 151 and the changeover switch 153, the receiver can receive a predetermined emergency call from the command receiving terminal 3-1 that is receiving a simultaneous command without adding any special functions to the digital exchange 1. By performing hooking, it is connected to the simultaneous command board 2b,
Emergency calls can be made.

Note that FIGS. 2 and 3 are only one embodiment of the present invention, and for example, the operation for making an emergency call is not limited to hooking, and the operation for making an emergency call is not limited to hooking. Although many other modifications may be considered, such as transmitting a predetermined DC potential to the subscriber circuit 15, the effects of the present invention remain the same in either case.

Also, the number of command receiving terminals that request emergency calls while receiving simultaneous commands is 3.
-1, but not limited to 3-2 or 3-3, etc.
Although many other modifications may be considered, the effects of the present invention remain the same in any case. Furthermore, it goes without saying that the digital exchange Jj9.1 to which the present invention is applied is not limited to what is illustrated.

〔Effect of the invention〕

As described above, according to the present invention, in the digital exchange, it is possible to make a call at any time from a command receiving terminal that is receiving a simultaneous command, thereby improving promptness and convenience.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing the principle of the present invention, Fig. 2 is a diagram showing a digital exchange according to an embodiment of the invention, Fig. 3 is a diagram illustrating the subscriber circuit in Fig. 2, and Fig. 4 is a diagram illustrating the conventional system. 1 is a diagram showing an example of a certain digital exchange; FIG. In the figure, ■ is a digital exchange, 2a and 2b are simultaneous command boards, 3 is a command receiving terminal, 4 is a terminal, 11 is a time division network (NW), and I2 is a central control unit (CC).
, 13a and 13b are command console circuits (AC), 14 and 15 are subscriber circuits (LC), 1G is a ringing sound source, 10
0 is a switching means, 151 is a control processor (LPR)
, 152 is a line interface circuit (LIF), 153
154a and 154b are two-wire and four-wire conversion circuits (HYB), 155a and 155b are code decoding circuits (CODEC), and 200 is a control means. Are you a bully who is trying to blaspheme? (
2) Kaya 2Ct=Taburu Karo M Kuchijite 3 mouths

Claims (1)

[Claims] A digital exchange (1) that accommodates a simultaneous command center (2a)
, each subscriber circuit (15) accommodating the receiving terminal (3) is connected to two sets of accommodating terminals (1) of the digital exchange (1), respectively.
T_a, T_b) and each subscriber circuit (15)
Then, each of the command receiving terminals (3) to be accommodated is connected to the two sets of accommodation terminals (T_
a, T_b).
100), detecting that the order receiving terminal (3) has made an emergency call while receiving a simultaneous command from the simultaneous command desk (2a) via one of the accommodation terminals (T_a or T_b), and control means (200) that controls switching means (100) to cause the order receiving terminal (3) to send a message to the digital exchange (1) via the other accommodation terminal (T_b or T_a);
).