JPH0797787B2 - Leased line automatic relay connection control method - Google Patents

Description

The present invention relates to a private line automatic relay connection control system in an electronic private branch exchange (PBX).

[Prior Art] Conventionally, in connection control of a private line in a private branch exchange device accommodating a private line, a dial signal sent from the exchange device in the previous stage is received by the exchange device in the next stage, and the exchange destination The dedicated line relay connection was made by determining the route of the switching device.

[Problems to be Solved by the Invention] However, in the above-mentioned conventional leased line relay connection system, the exchange requires a dedicated line route selection dial reception and a route selection control program, and the number of relays is increased due to the stepwise connection system. When the number of calls increases, the connection time to the partner station becomes long, and the number of dial digits and the number of pulse transmission digits on the caller side also increase, which results in a long monitoring time in terms of program control.

Further, there are drawbacks in that the number of times a register of a relay exchange or the like is captured is large, and a redial operation cannot be avoided due to an erroneous dial.

[Means for Solving Problems] It is an object of the present invention to solve the above problems and provide a leased line automatic relay connection control system for shortening the time for leased line relay connection, simplifying the connection, and the like. To do.

In order to achieve the above object, a leased line automatic relay connection control method according to the present invention is a leased line automatic relay connection control method for a private branch exchange that accommodates a leased line via a leased line trunk and performs relay connection of the leased line. In the above, in each of the leased line trunks, a connection means for previously providing connection data for specifying a connection route of the leased line, and when the leased line trunk receives a leased line incoming activation signal, the connection data is detected. Connection control means for connecting the leased line trunk by capturing an empty leased line trunk on the route corresponding to the connection data.

[Embodiment] An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a block diagram showing a leased line automatic relay connection control system according to this embodiment.

In the figure, in the private line automatic relay connection control method according to the present embodiment, four private branch exchanges (hereinafter abbreviated as PBX) A,
0,1, B are connected in cascade. Subscriber A is accommodated in PBX.A, and PBX.A and PBX.0 are mutually exclusive trunk lines.
PUTA0, A1 and A2 are connected to the dedicated line trunks PUT00, 02 and 04 and the dedicated line. Subscriber 0 is accommodated in PBX.0, and PBX.0 and PBX.1 are dedicated line trunks PUT01,03, respectively.
And the dedicated line trunks PU10, 20 and the dedicated line. Subscriber 1 is accommodated in PBX.1 and PBX.1 and PBX.B
Is a dedicated line trunk PUT11, a dedicated line trunk PUTB0,
Subscriber B is accommodated in PBX.B, which is connected via a dedicated line.

A register and a register sender RST are connected to each PBX.A, PBX.0, PBX.1, PBX.B.

PBX.0 and PBX.1 according to the present embodiment are each dedicated line trunk PUs.
T00,01,10,11,02,03 is given connection data for pre-identifying the route of the dedicated line for connection capture control for each route,
Each of the leased line trunks has a control program for automatically closing the train of each of the leased line trunks PUT00 and PUT01, PUT10 and PUT11, PUT02 and PUT03 when receiving a signal of outgoing or incoming.

Also, the private line trunks PUTA0, PUTA1, PUT of the termination PBX.A, PBX.B
A2, PUTB0, PUT04, PUT20 are the same trunks as the conventional control.

Figure 2 shows the private line trunks PUT00 and PUT0 of PBX.0 in Figure 1.
It is a figure showing the case where the number of leased line trunks in 1, PUT02, PUT03 is multiple lines. In this case, each dedicated line trunk PUT
The capture control of the empty trunk is performed for each route.

Next, the operation of this embodiment will be described.

After the subscriber A of PBX.A raises the handset, captures the register RST, opens the dial tone, and dials the special route "6" for the outgoing route to the subscriber B, the call is started to the private line trunk PUTA0. When the private line trunk PUT00 receives the private line incoming activation signal, the PBX.0 detects connection data of the private line trunk PUT00 and captures and controls the private line trunk PUT01 on the route corresponding to the private line trunk PUT00. In the case shown in FIG. 2, the leased line trunk group PUT01 as described above.
Capture the sky leased line trunk from inside. Thus, PB
Leased line trunks PUTA0 to PUT0 under the control of X.0 and PBX.1.
0, PUT01, PUT10, PUT11, PUTB0 and register RST (PBX.B)
The train is closed via, and the subscriber A hears the dial tone (PBX.B) from the register RST of PBX.B.

After that, the subscriber A dials the extension number of the subscriber B and can call the subscriber B to make a call. Further, the outgoing connection from the subscriber B to the subscriber A can be made in the same manner.

On the other hand, when the leased line trunk PUT04 or PUT20 is captured from the subscriber 0 or subscriber 1 of PBX.0, PBX.1, the route is controlled by the PBX.0,1 containing the subscriber 0,1. Controls the busy tone connection during the entire talk.

[Effects of the Invention] As described above, according to the present invention, connection data is added to a leased line trunk, and when the leased line trunk receives a leased line incoming activation signal, the connection data is detected and the corresponding empty route is detected. By controlling the leased line trunk, the dedicated line relay connection time is shortened, the dedicated line relay connection program is simplified, and the call volume of the register sender for relay dial is reduced.
There is also an advantage in terms of use, such as reducing invalid capture such as redialing due to incorrect dialing.

[Brief description of drawings]

FIG. 1 is a diagram showing a leased line automatic relay connection control system according to an embodiment of the present invention, and FIG. 2 is a diagram showing a leased line empty trunk selection control system. A, B, 0,1: Subscriber PUTA0 to A2, PUT00 to 04, PUT10, PUT11, PUT20, PUTB0: Dedicated trunk RST: Register and register sender

Claims (1)

[Claims] 1. A private line is accommodated through a private line trunk,
In a private line automatic relay connection control method of a private branch exchange for performing a private line relay connection, a granting unit for previously assigning connection data for specifying a private line connection route to each of the private line trunks; When the line trunk receives the leased line incoming activation signal, the connection control means detects the connection data and captures an empty leased line trunk of the route corresponding to the connection data to perform relay connection of the leased line. A dedicated line automatic relay connection control method characterized by being provided.