JPH0336867A - Line exchange network - Google Patents

Abstract

PURPOSE:To improve the utilizing efficiency of a line and to improve the economy by tentatively releasing a speech line when communication is idle with the intention of a talker and using the line for other communication from the operation of the line exchange network. CONSTITUTION:When a terminal equipment 7 sends a release request signal for the time being during communication between subscriber terminal equipments 7, 8, a connection/disconnection processing circuit 31 of an exchange 11 receives the signal via a subscriber interface 101 and a signal reception circuit 21. Moreover, au interrupt signal is sent to a connection/disconnection processing circuit 33 of the line exchange 13 via a signal line 4 and the circuits 31, 33 interrupt a speech line 5 from a channel between the terminal equipments 7, 8 while reserving the channel between the terminal equipments 7, 8 into a memory. Then a packet network 6 is selected and used as a packet communication line. Upon the receipt of a restoration request signal, the terminal equipment 7 interrupts the packet network 6, reconnects the line 5 via the line 4 to restore the terminal equipments 7, 8 to the talking state. Then the utilizing efficiency of the line 5 is enhanced and the economy is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a circuit switched network consisting of a plurality of exchanges and lines.

[Conventional technology]

Traditionally, in circuit-switched networks, when used for telephone or data communications,
It was common for them to be kept on hold until their use ended.

[Problem to be solved by the invention]

The conventional circuit-switched network described above has the advantage that once the line is connected, it is possible to communicate any information between terminals within the range that the line's characteristics allow. The disadvantage is that the line must be kept on hold.

This drawback is particularly noticeable in cases such as international communications, where line usage charges are high, the content of the communication is often for business communications, and communication must be interrupted frequently to access materials, etc.

[Means to solve the problem]

In the circuit switching network of the present invention, when a predetermined temporary release request is sent from a subscriber terminal to request temporary release of the connected call line while holding the connected call line. , instructs the other party's exchange to maintain the call connection state between the subscriber and the other subscriber and to switch the call line, allocating the call line to other communications, and Each exchange has means for instructing the other party's exchange to reconnect the line for the maintained call connection state and notifying the subscriber terminal of the completion of recovery, upon receiving a recovery request.

[For production]

In this way, the telephone line is released by the caller's temporary release request and reconnected by the restoration request, allowing the circuit switched network to use the telephone line effectively.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a configuration diagram of an embodiment of the circuit switching network of the present invention, and FIG.
Figure (1) is the line connection diagram during a call in Figure 1, and Figure 2 (2)
is a diagram showing the temporarily released state in FIG. 1, FIG. 2 (3) is a diagram showing a state in which the temporarily released line is allocated to the partition network 6, and FIG. diagram showing,
FIG. 2 (5) is a diagram showing a state in which a call is in progress after reconnection.

Line exchanges II to 13 each have a subscriber interface 10+-103 and a trunk 111N11 for telephone line 5.
3 and circuit-switched switching network 9! ~93
, signal receiving circuits 21 to 23 that receive temporary release request/recovery request signals via subscriber interfaces 101 to 103 during a call on the communication line 5; It includes connection/disconnection processing circuits 31 to 33 for switching/restoring communication, connects subscriber terminals 7 and 8 via a telephone line 5, and transmits and receives signals between exchanges via a signal line 4. packet network 6
is a part of the communication network including the circuit switching network of this embodiment.

Next, the operation of this embodiment will be explained with reference to FIGS. 2 to 6.

Assume that the subscriber terminal 7 is talking to the subscriber terminal 8 (see Fig. 2).
1)). When the subscriber terminal 7 in this state sends a temporary release request signal, the connection/disconnection processing circuit 3. is the subscriber interface 10. and signal receiving circuit 2I
It is received via the signal line 4 and sent to the circuit exchange 1 via the signal line 4.
A disconnection signal is sent to the connection/disconnection processing circuit 33 of connection/disconnection processing circuit 3.3. ．． 33 holds the communication path between the subscriber terminals 7 and 8 in memory and switches the communication line 5 to the packet network 6 in order to disconnect it from the communication path between the subscriber terminals 7 and 8 (FIG. 2 (3)). Allotted to packet communication lines. Next, when a recovery request signal is sent from the subscriber terminal 7, the connection/disconnection processing circuit 3I connects the signal receiving circuit 2. It receives this via the packet network 6 and issues a disconnection request to the packet network 6 (see FIG.
4)) Upon receiving the report of the completion of disconnection of the packet network 6, it contacts the connection/disconnection processing circuit 33 via the signal line 4 to reconnect the telephone line 5, and puts the subscriber terminals 7 and 8 into a telephone communication state. Recover (Figure 2 (5)).

〔Effect of the invention〕

As explained above, the present invention allows the circuit-switched network to divert the line to other communications by temporarily releasing the call line when the call is idle at the request of the caller. This has the effect of increasing line usage efficiency and improving economic efficiency.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of an embodiment of the circuit switching network of the present invention, and FIG.
Figure (1) is the line connection diagram during a call in Figure 1, and Figure 2 (2)
is a diagram showing the temporarily released state in Figure 1, Figure 2 (3) is a diagram showing a state in which the temporarily released line is allocated to the packet network 6, and Figure 2 (4) is a diagram showing reconnection due to a restoration request. A diagram showing
FIG. 2 (5) is a diagram showing a state in which a call is in progress after reconnection. II~t 3------Line exchange, 21~23---
-----Signal receiving circuit, 31 to 33---Connection/
Cutting processing circuit, 4------- Signal line, 5...
・・・・・・Telephone line, 6−−−−−−−−−−−−−
-----Packet network, 7, 8---------
-Subscriber terminal, 9I to 93--Switching network, 10, . 103------Interface, ti, , 113------ Trunk. Figure 2

Claims (1)

[Claims] 1. In a circuit switching network consisting of a plurality of exchanges and lines, a predetermined method for temporarily requesting release of a connected communication line while holding the connected communication line. When a temporary release request is sent from a subscriber's terminal, it instructs the other party's exchange to maintain the call connection status between the subscriber and the other party and to switch the call line, and transfer the call line to another communication. and upon receiving a predetermined recovery request from the subscriber terminal, instructs the partner exchange to reconnect the line for the maintained call connection state, and notifies the subscriber terminal of completion of recovery. A circuit switching network characterized in that each exchange has means for