JPH04247757A - Callback system in number 119 notice line - Google Patents

Abstract

PURPOSE:To reproduce the talking by providing a callback signal generating function to a relay trunk provided in a fire station command equipment so as to redial a caller when the fire station side stops talking in error. CONSTITUTION:When a dial call comes from a public network 12 via a 119 notice line trunk 2, a fire station command board 13 transfers the call to a magneto telephone set 11 via a transfer trunk 5, a changeover section 6, a relay trunk 3 and a magneto line trunk 4. When the magneto telephone set 11 disconnects the channel in error and the magneto telephone set 11 implements a prescribed reconnection request operation, a relay trunk 3 generates a callback signal 8 and it is sent to the 119 notice line trunk 2. Then a callback signal 9 is generated therein, sent to a public network 12 and when a subscriber telephone set 10 replies the call, the talking state is established again. Thus, even when the channel is disconnected in mistake, the subscriber is called back again.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic simultaneous command system, and more particularly to a callback system for a 119 notification line from a magnet line.

0002

[Prior Art] Conventionally, this type of firefighting command device has a 119
If the caller accidentally disconnects the 119 notification line after an incoming call from the notification line is received by the fire department and transferred to the magnet line, the caller will not be able to call back to the 119 notification line from the magnet line. Ta.

0003

[Problem to be Solved by the Invention] Conventionally, if an incoming call from a 119 notification line that arrives at a fire department command center is transferred to a magnet line, and then the caller accidentally disconnects the 119 notification line, the magnetic line Since it is not possible to call back the 119 notification line from the fire station, there was a drawback that the 119 notification line had to be captured again via the fire department command center and its contents checked.

[0004] The object of the present invention is to
To provide a callback system for a 119 notification line that allows a direct call back to the 119 notification line.

[0005]

[Means for Solving the Problems] The call-back method of the 119 notification line of the present invention is such that, after receiving an incoming call from a subscriber via the 119 notification line, one call is received at the command center, and then other magnetic telephones are called as necessary. In a call-back method of a 119 notification line in a fire department command system that transfers an incoming call to a magnet line that has been accommodated, when the call line is disconnected on the subscriber phone side after the command board transfers an incoming call to the magnet phone, the magnet phone The system is characterized in that it has means for generating a callback signal in response to a reconnection request sent by the 119 broadcasting trunk, and the 119 notification trunk that receives the callback signal generates a callback signal and sends it to the public network.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention, in which a fire department command device 1 includes a 119 notification line trunk 2 connected to a public network, a relay trunk 3, and a magnetic telephone to which incoming calls are transferred. 11, a transfer trunk 5 that transfers incoming calls from subscriber telephones 11, and a switching section 6 that switches the call path during transfer.

[0008] The emergency call made by the subscriber telephone 10 is
The call arrives at the fire department command center 13 via the public network 12, 119 notification line trunk 2 (dotted line).

If it is necessary to transfer the incoming call to another party as a result of the response from the fire department command center 13, the incoming call is transferred to the transfer trunk 5, the switching unit 6, the relay trunk 3, the magnet line trunk 4, and the magnet line by a predetermined transfer operation. Transfer destination magnetic phone 11
Transfer to.

When the magnetic telephone 11 answers, the fire command center 1
When the fire control center is evacuated, the fire control center is disconnected and the 119 notification line 2 is called.
, the transfer trunk 5, the switching device 6, the relay trunk 3, and the magnet line trunk 4, the subscriber telephone 1 and the transfer destination magnet telephone 11 enter into a conversation state.

In this state, if the subscriber accidentally disconnects the 119 notification line and the call is interrupted, the magnetic telephone 11 presses, for example, a re-call button, and sends out a call signal 7. This call signal is received by the relay trunk 3 via the magnet line trunk 4, generates a call back signal 8, and activates the 119 notification line trunk 2 via the switching unit 6.

The 119 broadcast line trunk 2 generates a recall signal 9 requesting reconnection with the subscriber telephone 10 and sends it to the public network 12.

[0013] When the subscriber telephone 10 responds, a communication path is re-established with the previously connected magnet telephone 11.

[0014]

[Effects of the Invention] As explained above, the present invention adds a simple relay trunk to a fire department command system, generates a call-back signal in response to a request from a magnet telephone set as a transfer destination, and sends it to a public network. , even if the caller accidentally disconnects the 119 notification line after transferring the incoming call to the forwarding line and evacuating.
It is possible to re-call and connect the subscriber directly from the transfer destination magnetic telephone without going through the fire department command center, improving the efficiency of emergency call reception operations.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the present invention.

[Explanation of symbols]

1 Fire command device 2 119 notification line trunk 3 Relay trunk 4 Magnet line trunk 5 Transfer trunk 6 Switching section 7 Call signal 8 Call back signal 9 Recall signal 10 Subscriber telephone 11 Magnet phone 12 Public network 13 Fire command center

Claims (1)

[Claims] Claim 1: A call on the 119 notification line in a fire department command system in which an incoming call from a subscriber via the 119 notification line is received at the command desk and then transferred to a magnetic line accommodating another magnetic telephone as necessary. In the return method, when the call line is disconnected on the subscriber telephone side after the command center transfers the incoming call to the magnet telephone, means for generating a call-back signal in response to a reconnection request sent by the magnet telephone. 11, wherein the 119 broadcast trunk that receives the callback signal generates a callback signal and sends it to the public network.
9 Call-back method for notification line.