JPS5927556B2 - Joint extension subscriber control system in private branch exchange - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a joint extension subscriber control system in a private branch exchange, particularly in an exchange system having, for example, eight joint extensions to which joint extension subscribers are connected via a joint individual paging device. This invention relates to a shared extension subscriber control method in a private branch exchange that reduces the functions of the calling device and shares control by the common control device of the exchange with that of general subscribers, thereby making the system more economical. .

BACKGROUND ART Conventionally, for example, in fields related to electric power and railways, private branch exchanges having so-called 8 joint extension subscribers have been widely used.

Although the present invention is not limited to so-called 8-share systems, in this type of system, common extension subscribers are provided with a common individual calling device. The joint individual paging device has a function of (i) preparing for transmission of tone ringer sound, (li) function of activating transmission of tone ringer sound, (i゛) off-hook or on-hook of joint extension subscriber. It had functions such as monitoring the status and notifying the common control device. In other words, although the joint individual paging device is a device that exists only for joint extension subscribers, it is necessary to have the various functions described above. Also, from the point of view of the exchange's common control device, the control for shared extensions was different from that for other extensions. The purpose of the present invention is to solve the above-mentioned problems, and the joint extension subscriber control method in the private branch exchange of the present invention is such that a plurality of subscribers are connected to a joint extension and are connected to the exchange via a joint individual paging device. In a switching system having a shared extension line connected to a line link network, the trunk link network of the above-mentioned exchange has at least a numeric receiving function and
In addition to connecting trunks for general subscribers that have a status monitoring function and a calling signal sending function, the above-mentioned common individual paging device is equipped with a tone linker sound in response to the activation of tone linker sound transmission from the trunk for general subscribers at a minimum. The common control device of the exchange has the function of generating a linker tone and has the joint individual calling device and the calling signal function based on the numeric information received by the general subscriber trunk having the numeric receiving function. By connecting a trunk for general subscribers via a network, the joint individual paging device is given an activation to transmit tone linker sound, and the joint individual paging device responds to the activation by transmitting the tone linker sound. It is characterized in that it is configured to generate and transmit a sound, and that the trunk for general subscribers having the above-mentioned state monitoring function monitors the state of the called subscriber on the shared extension line, including answering and disconnecting. There is.

This will be explained below with reference to the drawings. FIG. 1 is an explanatory diagram illustrating a control mode for general subscribers, FIGS. 2 to 4 are conventional control modes related to communal extensions, and FIGS. 5 to 7 are diagrams showing conventional control modes related to communal extensions An example control mode is shown.

The symbols SUBA and SUBC in the figure are general subscribers, LL
N is line link network, TLN is trunk link network, CC is common control unit, 0RT is originating register trunk, 10T is local trunk, RG
T stands for a paging trunk, SUBB stands for a shared extension (or its subscriber), and PLT-L stands for a shared individual paging device. First, an outline of the control of the common control device CC related to general subscribers will be explained.

That is, in FIG. 1, from subscriber SUBA to subscriber SUB
When the dial number for C is sent, the above number is placed in the outgoing register trunk 0 by the illustrated route 1.
Received at RT. Based on this content, the common control device CC connects the subscriber SUBA to the trunk IOT within its own office via the illustrated route 2, connects the subscriber SUBA to the calling register trunk 0RT, and connects the subscriber SUBA to the calling register trunk 0RT, and Connect RGT to subscriber SUBC. As a result, a paging signal is sent from the paging signal trunk RGT to the subscriber SUBC. When the subscriber SUBC goes off-hook, the common control device CC connects the subscriber SUBC to the local trunk IOT via route 3, and also disconnects the subscriber SUBC from the ringing signal trunk RGT. This makes it possible to talk between subscribers SUBA and SUBC, and monitoring of the call status is performed through the local trunk OT. When the call ends, the common control device C
C releases the link. Control among general subscribers is carried out as described above, but in the case of a joint extension subscriber SUBB, control is carried out as follows.

(A) Incoming call to joint extension subscriber SUBB.

As shown in FIG. 2, the dial number from subscriber SUBA is received by the originating register trunk 0RT as described above. Thereby, the common control unit CC (FIG. 1) knows that the call is for the shared extension. As a result, the joint individual paging device PLT-L prepares to call any subscriber who receives an incoming call, starts sending out a paging signal, and waits for the subscriber to go off-hook. When the subscriber goes off hook, the joint individual paging device PL
TL detects this and notifies the common control device CC. The common control unit CC connects to the subscriber SU by the illustrated route 2.
Connect BA and SUBB.

At this time, the joint individual paging device PLT-L continues to monitor the call status of SUBB.
When PLT-L goes on hook, the joint individual paging device PLT-L notifies the common control device CC of this fact. This causes the common control unit CC to release the link. (B) Calls between joint extension subscribers SUBB.

As shown in FIG. 3, the dial number from one of the subscribers SUBB is received by the originating register trunk 0RT. From this, the common control unit CC knows that the call is for the shared extension. As a result, the joint individual paging device PLT-L, as in the case shown in FIG. 2 above,
It makes a call, monitors the status, and when it detects the end of a call, it notifies the common control unit CC. (0 joint extension subscriber SU
Transmission from BB to general subscribers.

As shown in FIG. 4, the dialed number from subscriber SUBB is received by outgoing register trunk 0RT.

The control in this case is basically the same as the control in the case shown in FIG. 1, and a description thereof will be omitted. As can be seen by comparing the control shown in FIG. 1 with the control shown in FIGS. 2 to 4,
Common control device C for control related to joint extension subscribers
The control mode of C is different.

Further, although the joint individual paging device PLT-L is a dedicated device for the joint extension, it is designed to have many functions, which is not desirable from a system perspective. Fifth
7 to 7 show one embodiment of the control mode of the present invention.

In the case of the present invention, among the functions conventionally provided to the joint individual paging device PLT-L, at least (1) the function of starting the tone ringer sound transmission is entrusted to the paging signal trunk RGT shown in FIG. (Ii) Community extension response/
The function of monitoring conditions such as disconnection and notifying the common control device CC is left to the trunk IOT within the own station. That is, the joint individual paging device PLT-L includes a so-called paging signal detection circuit for detecting a paging signal from the paging signal trunk RGT, and a paging signal detecting circuit for each joint subscriber SUB. At least a tone linker sound sending circuit that can call each of B individually is provided. Then, in response to the activation from the paging trunk RGT, the incoming subscriber SUB. It has a function to call B. (]) Incoming call to joint extension subscriber SUBB.

As shown in FIG. 5, the dial number from subscriber SUBA is received by outgoing register trunk 0RT.

From this, the common control device CC knows that the call is for the shared extension. As a result, the joint individual paging device PL
T-L makes preparations to call any subscriber who receives an incoming call.

On the other hand, the common control device CC follows route 2 shown in the diagram (1).
Connect the subscriber SUBA to the local trunk IOT, and (1
1) Connect the ring signal trunk RGT to the communal extension line. As a result, the joint individual paging device PLT-L receives the activation from the paging signal trunk RGT and calls the subscriber SUBB who received the call. When the subscriber goes off-hook, the common control unit CC connects the community extension to the local trunk 10T via the route 3 shown. Subsequent status monitoring, such as the call status, is performed using the local trunk 0T, and
When it is hooked, the local trunk 10T notifies the common control device CC of this fact.

(E) Calls between joint subscribers SUBB.

As shown in FIG. 6, the dial number from one of the subscribers SUBB is received by the originating register trunk 0RT.

From this, the common control unit CC knows that the call is for the shared extension. As a result, joint individual paging device PL
T-L makes preparations for calling the subscriber SUBB who received the call. On the other hand, the common control device CC connects the calling signal trunk RGT to the common extension line by route 2 shown in the figure.

As a result, the joint individual paging device PLT-L receives the activation from the paging signal trunk RGT and calls the subscriber SUBB who received the call. When the subscriber goes off-hook, the common control unit CC connects the common extension to the local trunk 0T via the route 3 shown and also releases the ringing trunk RGT as shown in route 3x. And the status monitoring is
The intra-station trunk IOT performs the on-hook operation and notifies the common control unit CC of this fact.

(F) Calls from joint extension subscriber SUBB to general subscribers.

As shown in FIG. 7, the dialed number from subscriber SUBB is received by outgoing register trunk 0RT.

The control in this case is basically the same as that shown in FIG. 1 and FIG. 4. As explained in relation to FIGS. 5 to 7 above, the control mode by the common control device CC is the same in all the cases shown in FIGS. 5 to 7, and in the case shown in FIG. It is consistent with that.

Furthermore, the function of the extension individual calling device PLTL can be omitted compared to conventional control. As explained above, according to the present invention, the functions of the joint individual paging device PLT-L are entrusted to the trunk for general subscribers, and the control mode of the common control device CC is the same as that for general subscribers. In addition, the functions that should be provided to the joint individual paging device PLTL can be largely omitted.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram illustrating a control mode for general subscribers, FIGS. 2 to 4 are conventional control modes related to communal extensions, and FIGS. 5 to 7 are diagrams showing conventional control modes related to communal extensions An example control mode is shown.

Claims (1)

[Claims] 1. In a switching system having a common extension in which a plurality of subscribers are connected on a common extension and connected via a common individual paging device to the line link network of the exchange, the trunk link network of said exchange is equipped with at least a numeric reception function. In addition to connecting trunks for general subscribers that have a status monitoring function and a calling signal sending function, the above-mentioned joint individual paging device is equipped with a tone ringer sound in response to the activation of tone ringer sound transmission from the trunk for general subscribers. A common control device of said exchange has the function of generating a ringer tone and has said joint individual paging device and said paging signal function based on the numeric information received by the general subscriber trunk having said digit receiving function. By connecting a trunk for general subscribers via a network, the joint individual paging device is given an activation to transmit a tone/ringer sound, and the joint individual paging device responds to the activation by transmitting the tone/ringer sound. and is characterized in that the trunk for general subscribers having the condition monitoring function monitors the condition of the called subscriber on the shared extension line, including response and disconnection. Joint extension subscriber control system in private branch exchanges.