JPH082114B2 - Transmission control processing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Outline] The present invention relates to an exchange in which a line processor is responsible for monitoring and controlling a line system and an exchange processor executes an exchange process including a call origination process. Even if a block occurs in capturing common resources, the purpose is to enable efficient processing according to the order of outgoing requests. In addition to processing the current outgoing call request, when a new outgoing request occurs, if there is an old waiting outgoing request on the waiting queue memory, the new outgoing request is registered in the waiting queue memory.

[Industrial applications]

The present invention relates to an exchange in which a line processor shares the monitoring and control of a line system and the exchange processor executes an exchange process including a transmission process.

With recent advances in semiconductor technology, the line processor (LPR) using a microprocessor is responsible for physical monitoring and control of the line system, and the switching processor (C
An exchange is used in which the PR controls a plurality of line processors (LPR) and executes an exchange process including a transmission process. In such cases, the switching processor (CP
It is desirable that R) process outgoing requests from a plurality of line processors (LPRs) according to the outgoing order.

[Conventional technology]

Transmission requests from multiple line processors (LPR) are determined in the order in which they are received by the switching processor (CPR), and various resources (call processing transactions, transmission register trunk, etc.) necessary for transmission are captured. It In this case, if a block occurs in capturing the above resources, in the conventional case, a method of issuing a call request again is generally adopted.

FIG. 3 shows a conventional processing time chart. The thick horizontal line in the figure represents a call origination request, and the dotted horizontal line represents the completion of a call origination connection.

In the case shown in the figure, in response to the A extension, a block occurs when a resource is captured at the time of a call request, and a call is issued again, but this often indicates that a block has occurred, and the B extension, C extension, and D extension are , Successive acquisition is shown.

[Problems to be Solved by the Invention]

In the case of the above-mentioned conventional case, the acquisition block is frequently generated for the extension A, and a time difference may occur at the time of calling compared to other extensions.

It is an object of the present invention to enable efficient processing according to the order of transmission requests even if a block occurs in capturing a common resource such as a transmission register trunk during transmission processing by a switching processor.

[Means for solving the problem]

FIG. 1 is a diagram for explaining the principle of the present invention. In FIG. 1 (A), reference numerals 1A, 1B, ... Are extension lines, 2A, 2B, .. are line processors (LPR), 3 are exchange processors (CPR), 4 is an exchange network unit, and 5 is The central processing unit, 6 represents a waiting queue memory.

The line processor (LPR) 2i monitors and controls the occurrence of calls from extension lines. When a call is made, this is notified to the central processing unit 5 of the switching processor (CPR) 3,
In the switching processor (CPR) 3, the central processing unit 5 examines the contents of the waiting queue memory 6. Wait queue memory 6
If there is a call origination request that has previously caused a capture block, the call origination request is described. If there is a call origination request of the destination, a new call origination request is registered in the waiting queue memory 6. Of course, when the resource is released, the waiting queue memory 6 processes the outgoing call request previously registered.

[Action]

In FIG. 1 (B), a thick horizontal line represents a call origination request, a dotted horizontal line represents completion of a call origination connection, and a thin horizontal line represents a standby state.

As in the case shown in FIG. 1 (B), regarding the A extension now,
A block is generated and registered in the waiting queue memory 6,
Even if the standby occurs, in the present invention, if the resource becomes empty, the outgoing call request is extracted and processed with respect to the A extension which was previously in the standby. That is, the B extension is not processed first.

〔Example〕

FIGS. 2 (A) and 2 (B) together form one drawing and show the processing mode of the embodiment. "Terminal operation" in the figure corresponds to the operation in 1i shown in Fig. 1 (A),
The "LPR process" corresponds to the process of the line processor (LPR) 2i, and the "CPR process" corresponds to the process of the exchange processor (CPR) 3.

Also, in the figure, the switching processor (CPR) 3 corresponds to the processing for checking the contents of the waiting queue memory 6, and the processing corresponds to the processing when it is registered in the waiting queue memory 6, and also when the extension A is disconnected. Corresponds to the situation of requesting the monitoring request in, corresponds to the processing when the resource is released, corresponds to the processing when the extension A registered in the waiting queue memory 6 is disconnected on the way, and waits. This corresponds to the processing registered in the queue memory 6.

Now, when a call is made at A extension 1A, the line processor
2A detects and notifies the exchange processor 3. When the switching processor 3 detects a call, it examines the contents of the waiting queue memory 6. If there is no extension waiting, resources such as an outgoing register trunk are captured, and if they can be captured, an outgoing connection is made. If the capture fails or the waiting queue memory 6
If there is a waiting extension, it is in the waiting state for transmission and is registered in the waiting queue memory 6. Then, a disconnection monitoring request is made as to whether or not disconnection will occur in the A extension. The line processor 2A monitors the extension A for the presence or absence of disconnection.

Then, for example, when a call is made from the extension B, the contents of the waiting queue memory 6 are examined, and the processing according to the result is performed, as in the case of the extension A.

When the resources are released, the contents of the waiting queue memory 6 are checked, and if there is an extension waiting, the leading extension of the waiting queue is extracted and outgoing connection is made. If the extension A is disconnected while waiting for a call, the line processor (LPR) 2A detects this and notifies the switching processor (CPR) 3 of this. The switching processor (CPR) 3 deletes the registration relating to the extension A on the waiting queue memory 6, and then notifies the line processor (LPR) 2A to monitor whether a call from the extension A occurs again. Line Processor (LPR)
2A performs the monitoring.

〔The invention's effect〕

As described above, according to the present invention, even if a block occurs in the acquisition of resources, it is possible to protect the calling sequence as much as possible and prevent a large variation in the calling connection time. Further, it is possible to prevent undesired requests from the line processor (LPR) to the switching processor (CPR) and requests from the switching processor (CPR) to the line processor (LPR).

[Brief description of drawings]

FIG. 1 is a diagram for explaining the principle of the present invention, FIGS. 2 (A) and 2 (B) are processing modes of the embodiment, and FIG. 3 is a conventional processing time chart. In the figure, 1i is an extension, 2i is a line processor, 3 is a switching processor, 4 is a switching network unit, 5 is a central processing unit, and 6 is a queue memory.

Claims (1)

[Claims] 1. A plurality of extensions (1A, 1B, ...) Are connected, a line processor (2) monitors and controls a line system, and a switching processor (3) is used for the line processor (2). ) Is controlled while performing the exchange process, and the exchange processor (3) captures and processes various resources required at the time of transmission in response to the transmission request from the line processor (2). In the exchange, when the exchange processor (3) fails to capture the resource including the transmission register trunk corresponding to the transmission request, a waiting queue memory (6) for holding the transmission request in a queue and a new transmission request are stored. Correspondingly, the exchange processor (3)
If there is a waiting outgoing call request in the waiting queue memory (6), the new outgoing request is held in the waiting queue memory (6) and the resource is released. Correspondingly, in the exchange processor (3), the transmission control processing method is characterized in that the transmission request on the waiting queue memory (6) is processed in accordance with the transmission request.