JPS6343489A - Representative line selection and processing system in multi-processor electronic switching system - Google Patents

Abstract

PURPOSE:To attain detection processing of an idle subscriber line without communicating with another processor by making the common storage device of a multi-processor electronic switching system have the busy idle state of all the representative subscriber lines. CONSTITUTION:The busy idle state of subscriber lines A, B and C exists in the common main storage device 7 which is directly coupled to the respective central control equipments. Therefore when a certain call requests an incoming to the subscriber A of the representative line G1, the system need not commit the process to the central control equipment 4 and by directly scanning the busy idle state of the common main storage device 7, it is decided whether or not the incoming to the subscriber line B can be possible when the subscriber line A is not idle.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a representative group selection processing method for a multiprocessor electronic switching system.

[Conventional technology]

Traditionally, in multiprocessor electronic switching systems,
Information (memory area) for determining whether an idle line is received when a call is received for a representative subscriber is stored in the central network controlling the subscriber line.
fi Risou same equipment processor) unique note +! The information exists in the i-area and is updated by processing by the processor as the status of the subscriber changes.

FIG. 1 is a block diagram showing an example of a multiprocessor electronic switching system, and FIG. 2 is a diagram showing the components of a representative line.

This multiprocessor electronic switching system has two processors, central controllers 1 and 4, main memory 2,
5. It is composed of a communication path control 211 device 3.6 and a common main storage device 7, and centrally controls subscribers A and C of the representative port 11G1.
The subscriber B of the representative port 1!11G1 is accommodated under the control of the central control unit 4.

Figures 3 (1), (2), and (3) are diagrams showing typical examples of the method of detecting this next idle additional line, and are respectively normal.

It is a circular, uniform random method.

The latter two schemes specify how to determine the first incoming subscriber line in a circular scheme.

When the normal detection method is adopted, when the subscriber line Δ is not in an empty state, it is necessary to detect whether the subscriber line B is idle or busy. The idle/busy information of the subscriber line B exists in the main storage device 5, and this detection request passes control to the central controller 4 via the data bus 8. At this time, the central controller 211
The device 1 enters a temporary hold state, and processing is suspended until a response is returned from the central υ control device 4.

(Problems to be Solved by the Invention) In the representative line selection process in the conventional multiprocessor electronic switching system described above, in order to know the free status of A and B, the receiver passes information on whether the lines are free or not between the two processors. It is possible to detect a subscriber line that can be terminated by this.

As a wide variety of exchange services are now required of electronic exchange systems, the production of software will increase proportionally, but the processing speed of each central control unit is limited. The processing power of the system will continue to be a very important issue. By the way, in the above case, select the representative line! l
The need for communication with different processors in one process called a processing is due to the subscription circuit FIl included in the representative subscriber.
The larger the number, the greater the impact on processing time.

The purpose of the present invention is to solve the above-mentioned drawbacks and to solve the problems within one representative subscriber's line. ! It is an object of the present invention to provide a representative line selection method that minimizes the processing time for detecting a line capable of receiving a call from among subscriber lines connected under a central control unit.

[Means for solving problems]

Representative times 1i13f in the multiprocessor electronic switching system of the present invention! In the selection processing method, all representative subscriber lines under the system are placed in a vacant/blocked state on the system's common storage device, and during representative line selection processing, the central control unit that received the first incoming call request directly stores the vacant/blocked state in the common storage device. It scans the status and detects idle subscriber lines.

〔Example〕

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

FIG. 1 is a block diagram of an embodiment of a multiprocessor electronic switching system to which the delegation m1 selection processing method of the present invention is applied, and FIG. 2 is a diagram showing the components of a representative line in the electronic switching system of FIG. It is.

In this embodiment, the idle/busy status of subscriber lines A, B, and C exists in the common main memory 7 directly connected to each central control unit.

Therefore, when a call is requested to be received by subscriber A on representative line G1, the system is centrally controlled! There is no need to entrust the processing to the table device, and by directly scanning the common main storage device 7 for the empty/busy state, it can be determined whether or not a call can be received on the joining line B if the joining date nA is not empty.

This can be applied to all methods of detecting idle subscriber lines, and is highly versatile. In addition, in order to maintain the idle state of all representative subscriber lines in the common main storage device 7, each call path control IIV
Subscriber state transitions such as call information from R1!3.6 to the central control unit 1.4 are sequentially held in the common main memory Vi17.

(Effects of the Invention) As explained above, the present invention has the vacant status of all representative subscriber lines in the common storage device of a multiprocessor electronic switching system, so that when a call arrives on the representative line, communication with different processors is prevented. It is possible to perform empty subscriber line detection processing without the need for a This has the effect of making it possible to improve processing efficiency.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of a multiprocessor electronic switching system to which the representative line selection processing method of the present invention is applied; FIG. 2 is a diagram showing the components of the representative line in the switching system of FIG. 1; FIG. 3 is a diagram showing a typical example of a method for detecting an idle subscriber line. 1.4...Central control unit, 2.5...Main storage device,
3.6... Communication path control device, 7... Common main storage device, 8... Data bus.

Claims (1)

[Claims] In a multiprocessor switching system, all representative subscriber lines under the system are placed in an empty/busy state on the system's common storage, and during representative line selection processing, the central control unit that received the first incoming call request directly fills the common storage with an empty block. A representative line selection processing method in a multiprocessor electronic switching system that scans the busy state and detects idle lines.