JPS5821992A - Queuing system for idle trunk - Google Patents

Abstract

PURPOSE:To shorten the queuing time and to increase the using efficiency of the trunk line, by monitoring all idle trunk of an automatic route selecting system and then performing the catch and call-back of the idle trunk for the queuing extension terminal when the trunk becomes idle. CONSTITUTION:Plural trunk groups A-N consist of plural trunks and form properly an automatic route selecting system in correspondence to the extension terminals. Then an idle trunk is caught to the oscillation of the extension terminal, and the trunk line is connected via the caught trunk. Both the extension number and the trunk group are registered through an operation of the special number when the extension terminal has oscillation and in case all trunks of each trunk group belonging to the automatic route selecting system. When a trunk within the registered trunk group becomes idle, this idle trunk is caought. Then the registered extension terminal is called back. In such way, the queuing time is shortened to increase the using efficiency of the trunk line.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vacant trunk queuing system in an exchange that forms an automatic route selection system and acquires a vacant trunk for an extension call.

Generally, a switching system configures an automatic route selection system using a plurality of trunk groups, and after acquiring an empty trunk for a call from an extension, connects the call to a central office line via the trunk. For example, as shown in FIG. 1, when an extension terminal attempts to make a call using a trunk in the first trunk group, if all trunks in the first trunk group A are in use, the second trunk group B is used.
, and when all the trunks in this trunk group B are in use, the third trunk group C is further used, and in the same way, the fourth trunk group D is used for the last automatic route. The selection results in trunk acquisition. In this case, it can be said that the four trunk groups B, C, and D constitute an automatic route selection system in a predetermined order. However, when the extension is called, each trunk group forming the automatic route selection system is Naturally, when all trunks are in use, it is not possible to capture free trunks. For this reason, conventionally, automatic waiting for vacant trunks has been set by operating a special number on an extension terminal.

However, in the past, when the above-mentioned automatic queuing of vacant trunks was set, in the exchange, the extension terminal first monitored the trunk group that was not intended to be used and detected the vacant trunk and queued, or the automatic route selection system A vacant trunk is detected and queued for the selected trunk, and the detected vacant trunk is captured and a call is returned to the extension terminal. This is because the monitoring of free trunks in each trunk group is very complicated, and a complicated control mechanism is required just to view one trunk group in the control program. For this reason, in the past, even if an empty trunk occurred in a trunk group other than the trunk group in which automatic queuing was set, it could not be used effectively. This also causes problems such as a decrease in the efficiency of use of the central office line and an increase in waiting time.

The present invention has been made in consideration of these circumstances, and its purpose is to monitor free trunks in all trunk groups forming an automatic route selection system through simple control, and to one of them
When one trunk becomes vacant, the extension terminal that is set to automatically queue the vacant trunk acquires the vacant trunk and returns the call, thereby shortening the waiting time and improving the efficiency of central office line utilization. It is an object of the present invention to provide a vacant trunk queuing system that aims to achieve this.

The outline of the present invention is that when all the trunks of a plurality of trunk groups checked by automatic route selection in an exchange are in use and an extension terminal sets automatic waiting for this, the exchange The system registers the number and group name of the plurality of trunk groups that formed the automatic route selection system, and when one of the trunks among the registered trunk groups becomes vacant, the system captures that vacant trunk. By calling back the extension terminal with the extension number registered in the common CM, it is possible to easily wait for vacant trunks for all the trunks of the trunk group forming the automatic route selection system, and effectively achieve the above purpose. This is what we achieved.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

Figure 2 shows the relationship between a plurality of trunk groups and the trunks forming each trunk group. Trunk groups B, C, ~N are each made up of one or more trunks. There is. These trunk groups A e B e C-N are classified and set for each office line function, for example. Therefore, these trunk groups B, C-N form an automatic route selection system corresponding to the extension terminal, seize an empty trunk for the call from the extension terminal, and connect to the central office line via the same trunk. It is something that connects.

Figure 3 also shows that when the above extension terminal makes a call and all the trunks in the trunk group forming the automatic route selection system are in use, the extension terminal calls the automatic waiting point by dialing a special number or by key operation. This shows the configuration of a table T in which information is registered when it is set.

That is, this table registers the number code of the extension terminal for which automatic waiting has been set and the group name of the trunk group forming the automatic route selection system set for the extension terminal. This trunk group name is registered, for example, by setting a 1-bit flag in a storage area set corresponding to the trunk group. Therefore, when an extension terminal sets automatic waiting, the number code of that extension terminal is stored in a predetermined data area, and the storage area set corresponding to the trunk group of the memory address corresponding to this data area is stored. Meeting registration is performed by setting up a flag "moon" at a position corresponding to the trunk group that formed the automatic route selection system.The meeting registration is performed in the order starting from the extension terminal for which automatic meeting was set first.

On the other hand, the number of flags Il@ set corresponding to each trunk group in this table T is counted for each trunk group and set in the register &. When a count value of 1 or more is set in this register B, it means that the corresponding trunk group is available for waiting for a vacant trunk.

FIG. 4 shows an example of the control flow for detecting an empty trunk for an extension terminal that has been set to automatically meet in this manner, seizing this empty trunk, and calling back the extension terminal. is activated upon detection of trunk disconnection from an extension terminal or trunk disconnection from a central office line. This trunk disconnection means that a trunk within the exchange has become vacant, and first, restoration processing is performed for the trunk in which the vacant trunk has become vacant. Next, the number of flags set in the table TK is detected from the register R corresponding to each trunk group, and when the value set in the register RK is "0", it is determined that there is no automatic waiting setting. Also, the value set in register & is “
When the value is 1" or more, that is, when it is not 0, it is determined that the vacant trunk waiting board, that is, the extension terminal is performing automatic waiting setting for the trunk group to which the vacant trunk belongs. Then, this trunk glue is detected. In this case, in the table T having the configuration illustrated in FIG. 3, the flag rlJ is searched for in order from the upper storage area of the column corresponding to the trunk group, since the type setting order at the upper position is higher. Then, the number data corresponding to the first found storage area where the flag "1" is set is read out, and the extension terminal for which the waiting list has been set is recognized. Then, this extension terminal acquires the vacant trunk, and at the same time, this extension terminal subtracts "1" from the set value of register a for all of the waiting registration trunk groups.

This value subtraction process is performed by specifying only the relevant group, for example by using the token group number as an index. Thereafter, the number code for which the waiting response was made on the table T and all the flags set corresponding to that number code are erased, and the registered data of the table T is packed one column at a time in the upper position. Thereafter, the extension terminal indicated by the number code is called back, and the empty trunk waiting process for the extension terminal is completed.

As described above, according to this method, an automatic route selection system is formed in response to a call from an extension terminal, and a plurality of trunk groups from which trunks are selected are all set as vacant trunk waiting targets,
When a vacant trunk occurs in any of them, the trunk can be captured and a callback can be performed. Moreover, in this case, by using a table T as shown in FIG. can respond to the extension terminal that is the waiting target. Therefore, even if the automatic route selection system formed for the extension terminal is complex and there are a large number of trunk groups forming this automatic route selection system, it is not possible to make a waiting response very easily. can. Therefore, when one trunk among the plurality of trunk groups forming the automatic route selection system becomes vacant, a response to the vacant trunk is promptly made, so that the waiting time for the vacant trunk can be shortened. can. Further, as soon as a vacant trunk becomes available, it can be used for the next extension terminal to make a call, making it possible to utilize the central office line effectively. 4? Since it is possible to easily monitor vacant trunks and perform processing for queuing them, the practical advantage is extremely large. In other words, unlike conventional methods that monitor all trunks in a target trunk group and detect their vacancies, this method detects whether there is an extension terminal that is queuing for the trunk group to which the vacant trunk belongs. Since the control flow is very simple,
The system configuration can be simplified.

Note that the present invention is not limited to the above embodiments. For example, the number of trunk groups, the number of trunks forming each trunk group, and the configuration of the automatic route selection system may be determined according to the specifications of the exchange and the functional specifications of the extension terminal. Furthermore, the control flow for waiting responses to empty trunks can also be modified, and this may be implemented using hardware. In short, the present invention can be implemented with various modifications without departing from the gist thereof.

As described in detail above, according to the present invention, all of the plurality of trunk groups forming an automatic route selection system are targeted for vacant trunk queuing, and automatic queuing for extension terminals is performed.
It can be easily set up using a waiting table.

Therefore, it is an object of the present invention to provide an empty trunk queuing method that has great effects such as being able to promptly improve the waiting line usage efficiency for extension terminals when an empty trunk occurs in any of the above trunk groups. I can do it.

[Brief explanation of the drawing]

FIG. 1 is a model diagram showing the concept of automatic route selection in an exchange, FIG. 2 is a diagram showing the relationship between a plurality of trunk groups and the trunks belonging to each trunk group, and FIG. 3 explains an embodiment of the present invention. FIG. 4 is a diagram showing an example of a waiting control flow in the embodiment system. 'A, B, C#N...Trunk group, T...Table, a...Register.

Claims (1)

[Claims] When an extension makes a call using one of the plurality of trunk groups connected to the exchange to form an automatic route selection system, the automatic route selection system (all trunks of each trunk group to which it belongs are in use) At this time, the extension number and trunk group name belonging to the automatic route selection system are registered by operating the special number of the extension, and when one trunk in the registered trunk group becomes vacant, that vacant trunk is captured. A vacant trunk waiting system characterized by calling back the extension of the extension number registered with the system.