JP2729704B2 - Extension representative control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION << Industrial application field >> The present invention relates to a private automatic telephone exchange connected to a common channel signaling system, in which all extension terminals are in use after a representative selection of extension terminals. And an extension representative control device for selecting representatives of extension terminals accommodated in another private automatic telephone exchange.

<Conventional technology> Conventionally, the extension representative function in a private automatic telephone exchange is
When an extension terminal in the private automatic telephone exchange attempts to call an extension terminal in the same private automatic telephone exchange, if an incoming extension terminal is in use, all extension terminals in the same group are used. Checking for vacancy / blocking, the incoming call was sent to a vacant extension terminal.

<< Problems to be Solved by the Invention >> The above-mentioned conventional technology adopts a common channel signaling system in a network composed of a plurality of private branch exchanges.
It was only possible within a local automatic telephone exchange.

However, services can be used between networks, and services between networks are enriched. However, the frequently used representative selection function has not been extended to services between networks, and further network It is hoped that inter-services will be enhanced.

An object of the present invention is to provide a private automatic telephone exchange with another private automatic telephone exchange, in which a plurality of private automatic telephone exchanges connected by a common line signal system are provided with an extension representative function that has been closed only for representative selection of an extension terminal. By further selecting the extension terminals accommodated in the telephone exchange, the advantages of adopting a common line signaling system that makes multiple private automatic telephone exchanges look like a single private automatic telephone exchange will be further enhanced. An object of the present invention is to provide an extension representative control device that can be achieved.

<< Means for Solving the Problems >> In order to achieve the above object, the present invention provides a first private automatic telephone exchange accommodating a first extension terminal group and a second private automatic telephone exchange.
And a second private automatic telephone exchange device accommodating a group of extension terminals, the extension representative control device connected to each other by a common channel signaling system and a communication line to form a network. In the automatic telephone exchange, the first
First storage means comprising an intra-station representative control area storing information indicating the extension terminal group and an inter-station representative control area storing information indicating the second extension terminal group; Upon recognizing a connection request to the first extension terminal group from an extension terminal accommodated in the first private automatic telephone exchange, the extension request is stored in the local control control area of the first storage means. And a recognition unit for recognizing a vacant / occupied state of the first extension terminal group with reference to the information on the extension and a vacant extension terminal when the recognition unit determines that there is an empty extension terminal. A means for performing an incoming call control process for the terminal, and an inter-station representative of the first storage means when the recognizing means determines that all of the extension terminals of the first extension terminal group are in a closed state. Stored in the control area With reference to the information, the call information for the second extension terminal group, the call information including representative selected information indicating that representative selection has already been performed, by the common line signaling method, Means for transmitting to the second private automatic telephone exchange apparatus, wherein the second private automatic telephone exchange apparatus has a representative control area in the local station storing information indicating the second extension terminal group. Second storage means comprising an inter-office representative control area storing information indicating the first extension terminal group; and calling information from the first private automatic telephone exchange is transmitted to the common line signal. When received by the system, the recognition means for recognizing the free / busy state of the second extension terminal group by referring to the information stored in the local control area in the second storage means, and the recognition means Vacant extension terminals When it is determined that, when it is determined that all the extension terminals of the second extension terminal group is in a closed state by means for performing an incoming call control process for the empty extension terminal and the recognition means, Discriminating means for discriminating whether or not the call information includes the representative selected information; and, if the discriminating means determines that the call information includes the representative selected information, a busy control process Means for performing
And the second extension terminal group is used as one extension representative to perform connection control.

<< Operation >> According to the present invention, when a connection request from the extension terminal accommodated in the first private automatic telephone exchange to the first extension terminal group is recognized, the first extension terminal group is recognized. It recognizes whether there is an empty extension terminal from the inside, and if there is an empty extension terminal, performs incoming call control processing for the empty extension terminal, and all the first extension terminal groups are blocked. , The call information including the representative selected information indicating that the representative selection has already been performed is transmitted to the second premises terminal by the common line method. When the call transmission information transmitted to the telephone exchange device and received from the first private automatic telephone exchange to the second extension terminal group, the call information including the representative selected information is received by the common channel signaling method, In the free state from the extension terminal group 2 It recognizes whether there is an extension terminal, and if there is an empty extension terminal, performs an incoming call control process for the empty extension terminal, and all the second extension terminal groups are closed. In some cases, busy control processing is performed.

Also, the central processing unit of the private automatic telephone exchange that has received the common line signal recognizes an extension incoming from the common line signal,
A representative selection process is performed.

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

FIG. 1 shows an example of a network configuration of a local automatic telephone exchange applied to an extension representative control device according to the present invention.

In FIG. 1, each private automatic telephone exchange (hereinafter referred to as PBX) 1a, 1b includes central processing units (hereinafter, referred to as CPUs) 2a, 2b for controlling the entire exchange, various programs such as an exchange operation control program, and various data. , Storage devices (hereinafter referred to as MEM) 3a, 3b for storing various tables, etc., common line signaling devices (hereinafter, referred to as CSE) 4a, 4b for transmitting and receiving control signals different from speech signals during call control, and extension terminals TELa, It has TELb.

As shown in the figure, the PBX 1a and the PBX 1b are connected by a common channel signaling method, and a call link 5 for making a call.
And a signal link 6 for transmitting a control signal different from a call via the CSEs 4a and 4b.

In addition, from the extension terminal TEL a1 to TEL an and TEL b1
TEL bn is representatively connected, for example, in each PBX, when the extension terminal TELa of the PBX1a tries to call TEL a1, if the extension terminal TEL a1 is in use, the extension terminal TEL a1 Extension terminals within the same representative (TEL a1 to TEL a
A check is made (representative selection) for the empty / occupied state of n), and an incoming call is processed to an empty extension terminal.

Furthermore, when the representative is selected, when all the extension terminals in the representative are in use, the PBX 1a calls the extension terminal TEL b1 of the PBX 1b, and the PBX 1b selects the representative in the same representative as the extension terminal TEL b1. Then, an incoming call is processed to an empty extension terminal.

At this time, if all the extension terminals in the representative of the extension terminal TEL b1 are in use, the call to the extension terminal TEL a1 is not performed.

Similarly, when the extension terminal TELa of the PBX1a directly calls the extension terminal TELb1 of the PBX1b, the PBX1b selects a representative within the same representative as the extension terminal TELb1, but is used by all the extension terminals. In the middle, PBX1b is the extension terminal TEL a1 of PBX1a
Is to be called.

In other words, at the time of representative selection in each PBX, when all extension terminals are in use and a general call is received, a representative selection between stations is performed. Not to be.

FIG. 2 is an example of a data configuration showing a representative configuration stored in the MEM for performing the above-described representative call.
In FIG. 2A, reference numeral 201 denotes a representative control data structure for controlling the representative.

202 is an intra-station representative control area in which information for controlling representatives in the own station is set, and 203 is an inter-station representative control area in which information for controlling representatives between stations is set. , Included in the representative control data 201.

The own-station representative control area 202 is referred to when an incoming extension terminal in use is used by an incoming call to an extension terminal in the own station, and information of the incoming extension terminal is stored in the own-station representative control area 202. If it is set to か に, check all available / blocked other extension terminals set in the local station's representative control area 202, find an empty extension terminal, and receive an incoming call to that extension terminal. Processing is performed.

If the information of the extension terminal to which the call is received is not set in the intra-station representative control area 202, the busy process is performed.

Further, the inter-station representative control area 203 is referred to when there is no empty extension terminal and there is a general incoming call when the intra-station representative control area 202 is vacant / blocked, and the inter-station representative control area 203 According to the information, a common line is transmitted and an extension terminal of another station is called.

If the inter-station representative control area 203 is not set,
The inter-station representative control is not performed, and the busy process is performed.

FIG. 2 (b) shows the network in the network shown in FIG.
FIG. 2 (c) shows a setting example of the representative control data 201 of the PBX 1a, and FIG. 2 (c) shows a setting example of the representative control data 201 of the PBX 1b in the network shown in FIG.

2 (b) and FIG. 2 (c), information on extension terminals in each PBX is set in the local representative control area 202 of the local station. In each case, information on the extension terminal of the partner PBX is set. Thereby, it is possible to select a representative in the own station and a representative between the stations.

FIG. 3 shows a processing sequence when a representative selection is made between the networks shown in FIG.

FIG. 3 (a) shows a representative selected in the PBX1a shown in FIG.
In the sequence for selecting representatives between stations, when the extension terminal TELa of the PBX1a tries to call any of the extension terminals TELa1 to TELan, the incoming extension terminal is in use In the case of (3), the representative of the extension terminal TEL an is selected from the extension terminal TEL a1 (FIG. 3 (a), step 31).
0), if there is an available extension terminal (step 310a), the extension terminal is called. If all the extension terminals are in use, the extension terminal TEL of the PBX1b is referred by referring to the inter-office representative control area 203. Common line signal for calling b1 (Fig. 3 (a)
Step 301) is sent out.

In the type in the common line signal (step 301 in FIG. 3 (a)), an identification which can recognize that the representative selection has already been performed in the PBX 1a is set.

The PBX 1b that has received the common line signal (step 301 in FIG. 3A) performs an incoming call process to the extension terminal TEL b1.
If the extension terminal TEL b1 is in use, the extension terminal TEL b1
(Step 311 in FIG. 3 (a)), and if there is a free extension terminal (step 311a), the extension terminal is called. However, when all the extension terminals are in use, the extension terminal TEL a1 of the PBX1a is activated based on the representative control data 201 in FIG. 2C,
If this is done, an infinite loop will occur in the representative selection between the stations. Therefore, the type of the common line signal (step 301 in FIG. 3A) is determined. (Step 312 in FIG. 3 (a))
Prevents infinite loop.

FIG. 3B shows that the extension terminal TELa of the PBX1a shown in FIG. 1 directly calls the extension terminal TELb1 of the PBX1b.
FIG. 9 is a diagram showing a sequence in a case where a representative selection of the PBX1a is performed after the representative selection in the BX1b.
In order to call any one of the extension terminals TEL b1 to TEL bn from the extension terminal TEL b1 of 1b, the PBX 1a sends a common line signal (third
Step 301) of FIG.

In the type in this common line signal (step 301 in FIG. 3 (b)), an identification which can recognize that the call is a general call for which representative selection has not been performed in the PBX 1a is set.

The PBX1b that has received the common line signal (step 301 in FIG. 3B) performs an incoming call process to the extension terminal TELb1,
When the extension terminal TEL b1 is in use, a representative selection of extension terminals (TEL b1 to TEL bn) within the same representative as the extension terminal TEL b1 is performed (step 311 in FIG. 3 (b)), and an empty extension is used. If there is a terminal (step 311a in FIG. 3 (b)), the extension terminal is called. If all the extension terminals are in use, a common line signal (step 301 in FIG. 3 (b)) is used. ) Is determined to be a general call (step 312 in FIG. 3 (b)), so that the extension terminal of the PBX1a is transferred from the inter-station representative control area 203 of the representative control data 201 in FIG. 2 (c). T
A common line signal (step 302 in FIG. 3B) for calling out EL a1 is transmitted.

In the type in the common line signal (step 302 in FIG. 3B), an identification that can recognize that the representative selection has already been performed in the PBX 1b is set. The PBX 1a that has received the common line signal (step 302 in FIG. 3B) receives the common line signal in step 310 in FIG. 3B and returns to step 311 in FIG.
The same processing as the processing of PBX1b is performed.

<< Effects of the Invention >> As described above, according to the present invention, if all the extension terminals are in use after the representative selection of the extension terminal accommodated in the same PBX, the extension terminal accommodated in another PBX is used. The extension representative function between PBXs connected using the common channel signaling method adopts the common channel signaling method. Even if you do, the response up to the call is good.

In addition, the extension representative function between PBXs has the effect of improving inter-office services.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a connection example of PBXs connected by a common channel signaling system of one embodiment of an extension representative control device of the present invention;
FIGS. 2 (a) to 2 (c) are explanatory diagrams showing a data structure for selecting representatives of extension terminals between the private automatic telephone exchanges and setting examples thereof, and FIGS. 3 (a) and 3 (a). FIG. 3 (b) is a flowchart showing a processing sequence in the case where a representative selection of an extension terminal is performed between the networks of FIG. 1a, 1b… automatic private branch exchange, 2a, 2b… central processing unit, 3a, 3b… storage device, 4a, 4b… common line signaling device, 5
... call link, 6 ... signal link, 201 ... representative control data, 202 ... representative control area in own station, 203 ... representative control area between stations.

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-162167 (JP, A) JP-A-61-260750 (JP, A) JP-A-1-321760 (JP, A)

Claims (1)

(57) [Claims] 1. A first private automatic telephone exchange apparatus accommodating a first extension terminal group and a second private automatic telephone exchange apparatus accommodating a second extension terminal group. An extension representative control device connected to each other by a line signal system and a communication line to form a network, wherein the first private automatic telephone exchange device stores information indicating the first extension terminal group. First storage means including a local representative control area within the local station and an inter-station representative control area storing information indicating the second extension terminal group; and a first private branch automatic telephone exchange device. When recognizing a connection request to the first extension terminal group from the existing extension terminal, the first extension terminal refers to the information stored in the local control control area of the first storage means and checks the first extension terminal. Recognition means for recognizing the vacant / occupied state of the aircraft group If it is determined by the recognizing means that there is an empty extension terminal, a means for performing an incoming call control process for the empty extension terminal; and all of the first extension terminal group by the recognizing means. When it is determined that the extension terminal of the second extension terminal is in a closed state, the information stored in the inter-station representative control area of the first storage unit is referred to as the call information for the second extension terminal group. Means for transmitting call information including representative selected information indicating that representative selection has already been performed to the second private automatic telephone exchange by the common channel signaling method, The local automatic telephone exchange apparatus has a local representative control area storing information indicating the second extension terminal group and an inter-office representative storing information indicating the first extension terminal group. Consists of control area The second storage means, and when the call information from the first private automatic telephone exchange is received by the common channel signaling method, the information stored in the local representative control area of the second storage means is read. And a recognition means for recognizing a vacant / occupied state of the second extension terminal group, and, if the recognizing means determines that there is a vacant extension terminal, incoming call control for the vacant extension terminal Means for performing processing, and when the recognizing means determines that all the extension terminals of the second extension terminal group are in a closed state, determines whether the call information includes the representative selected information. Determining means for determining whether
Means for performing a busy control process if the determination means determines that the call information includes the representative selection information;
An extension representative control device, comprising: performing connection control using the first extension terminal group and the second extension terminal group as one extension representative.