JPH0530359B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a channel map group release method that makes it possible to reduce the information transfer load between processors in a distributed control type electronic exchange.

In order to expand the application area of electronic exchanges, a communication line system that accommodates a relatively small number of lines and a processor (hereinafter referred to as a call processing processor) that performs distributed control of the communication line system are installed as an expansion unit, and the number of lines accommodated is increased. A processor that centrally manages multiple call processing processors by installing multiple call path systems and call processing processors in parallel depending on the scale (hereinafter referred to as a management processor)
An electronic switching system is used.

In this type of electronic exchange, it is essential to transfer information between each call processing processor and the management processor, but the capacity of the call processing processors and management processors to transfer this information is not insignificant, and the frequency of such information transfer is increasing. In this case, the call processing capacity of the call processing processor and the management processor will be greatly reduced, and there is a possibility that the call processing capacity of the electronic exchange will be reduced. Therefore, in such distributed control type electronic exchanges, there is a strong demand for measures to reduce the frequency of information transfer between processors as much as possible.

[Conventional technology]

FIG. 3 is a diagram showing an example of a conventional electronic exchange, and FIG. 4 is a diagram showing an example of the call path release process in FIG.

In Figure 3, the call processing processor (CPR)
11 and 12 are subscribers 31 accommodated in the corresponding communication network (NW) 21 and 22, respectively.
and 32. A management processor (MPR) 4 centrally manages call processing processors 11 and 12. Each call processing processor 11 and 12 and the management processor 4 transfer various information via the bus 5.

The management processor 4 communicates with the communication path networks 21 and 22.
It is equipped with a channel map (CHM) 41 that records the idle/blocked status of all communication paths p set within the network, and centrally manages the use of all communication paths p.

In FIGS. 3 and 4, the call processing processor 11 connects a subscriber 31 accommodated in the communication path network 21 to a subscriber 32 accommodated in the communication path network 22, for example.
When the occurrence of a call is recognized, a communication channel is sent to the management processor 4 via the communication control units (CHCs) 61 and 63 and the bus 5 to request the necessary channel p within the channel networks 21 and 22. Convey selection request information. In the management processor 4,
When the central processing unit (CPU) 42 receives the call route selection request information, it refers to the channel map 41, checks whether the call route p that satisfies the request is empty or blocked, and if free call routes p1 and p2 are detected, the call is terminated. road p
1 and p2, and returns selected communication path notification information indicating the selected communication paths p1 and p2 to the call processing processor 11. The call processing processor 11 sets the communication path p1 indicated by the selected communication path notification information transmitted from the management processor 4 within the communication path network 21.

Note that the call processing processor 12 is notified of the call path p2 from the call processing processor 11 together with the incoming call request to the subscriber 32, and therefore sets the call path p2 within the call path network 22.

Eventually, when the call between subscribers 31 and 32 ends, call processing processor 11
Communication path release request information for releasing the communication path p1 occupied during the call is transmitted to the management processor 4 via the communication path p1 and the bus 5. In the management processor 4, when the central processing unit 42 receives the channel release request information, it refers to the channel map 41, sets release information for the channel p1 in which the occupancy information is stored, and then sends the channel to the call processing processor 11. Return release notification information. The call processing processor 11 releases the communication path p1 indicated by the communication path release notification information transmitted from the management processor 4 within the communication path network 21.

Note that the call processing processor 12 and the management processor 4
In order to release the communication path p2 within the communication path network 22, the same information transfer as described above is performed between the communication path network 22 and the communication path p2.

[Problem that the invention seeks to solve]

As is clear from the above explanation, in the conventional communication path setting and release method, each time a call is restored, the call processing processor 11 establishes a communication path between the management processor 4 and the management processor 4 in order to release the communication path p1 that is being set. It is necessary to transmit and receive the release request information and the channel release notification information, which may put pressure on the processing capacity of the call processing processor 11 and the management processor 4.

[Means for solving problems]

In the electronic exchange to which the present invention is applied, the idle and blocked states of all communication paths included in each communication path system that are distributed and controlled by each call processing processor are collectively managed using a channel map built into the management processor. Furthermore, in the present invention, each call processing processor is provided with a channel map for recording the idle/busy states of all communication paths included in the corresponding communication path system.

Each time a call processing processor releases a call path currently set in the corresponding call path system, the released call path is recorded in the corresponding channel map, but the management processor is not immediately notified.

The call processing processor collectively notifies the management processor of all released communication paths recorded in the channel map at predetermined intervals.

[Effect]

That is, according to the present invention, the call processing processor collectively notifies the management processor of all released communication paths at predetermined intervals, and each time a communication path that is currently being set is released, the communication between the call processing processor and the management processor is There is no need to transfer information. If the batch notification period is set to be sufficiently longer than the channel release frequency, the frequency of information transfer between the call processing processor and the management processor can be significantly reduced.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing an electronic exchange according to an embodiment of the present invention, and FIG. 2 is a diagram showing an example of the call path release process in FIG. 1. Note that the same reference numerals indicate the same objects throughout the figures.

In FIG. 1, channel maps (CHM) 111 and 121 and release information transmitters (CMS) 112 and 122 are provided in the call processing processor 11 and call processing processor 12, respectively, and in the management processor 4, a release An information receiving unit (CMR) 43 is provided.

The channel map 111 shows the corresponding communication path network 2.
The channel map 121 can record the release information of all the communication paths p in the communication path network 22.
The release information transmitting units 112 and 122 extract all the release information recorded in the channel map 111 or 121 at predetermined intervals, and send it to the management processor 4 via the communication control devices 61, 63 or 62, 63 and the bus 5. to communicate. The release information receiving unit 43 receives the release information transmitted from the call processing processors 111 and 121, and sets it in the channel map 41 provided in the management processor 4.

1 and 2, the process in which the call processing processor 11 sets the communication path p1 in the communication path network 21 involves transmitting communication path selection request information to the management processor 4 in the same way as in FIGS. 3 and 4. The management processor 4 refers to the channel map 41, sets occupancy information for the detected vacant communication paths p1 and p2, and sets the occupancy information for the selected communication paths p1 and p2.
Selected channel notification information indicating 2 is returned to the call processing processor 11. The call processing processor 11 sets the communication path p1 indicated in the selected communication path notification information transmitted from the management processor 4 in the communication path network 21, and also sets the communication path p1 in the communication path network 21 when receiving a call to the subscriber 32.
2 to the call processing processor 12, and
The communication path p2 within 2 is set.

When the call between the subscribers 31 and 32 ends, the call processing processor 11 independently releases the call path p1 set in the call path network 21, and also releases the call path p1 in the built-in channel map 111.
1, but no information regarding channel release is transferred to the management processor 4. The same applies to the call processing processor 12.

When a predetermined batch transfer cycle elapses in such a state, the release information transmitter 1 in the call processing processor 11
12 is activated. The release information transmitter 112 extracts all the release information set in the channel map 111, transmits it to the management processor 4 via the communication control devices 61 and 63 and the bus 5, and then initializes the channel map 111. do. The same applies to the call processing processor 12.

In the management processor 4, the release information receiving section 43 sets the release information transmitted from the call processing processors 11 and 12 in the channel map 41, and sets each communication path p that was in a blocked state to an empty state.

As is clear from the above description, according to the present embodiment, even if the call processing processors 11 and 12 release the communication path p1 or p2 at the end of a call, they do not immediately notify the management processor 4, but the built-in channel map 111 Alternatively, release information is set in 121, and the data is collectively transferred to the management processor 4 at a predetermined batch transfer cycle. Therefore, the batch transfer period is determined by the communication path p.
If the interval is set sufficiently long compared to the release interval of , the frequency of information transfer with the management processor 4 can be significantly reduced.

Note that until the release information is collectively transferred from the call processing processors 11 and 12, the communication path p that is vacant on the communication path networks 21 and 22 becomes blocked in the channel map 41 in the management processor 4. If the communication path p in the communication path networks 21 and 22 has sufficient margin for the call volume, the invalid hold of the communication path p when the batch transfer cycle becomes longer will not have a negative effect on the communication path networks 21 and 22. None.

It should be noted that FIGS. 1 and 2 are only one embodiment of the present invention, and the configuration of the target electronic exchange, for example, is not limited to that shown in the figures.
Although many other modifications may be considered, the effects of the present invention remain the same in any case. Furthermore, the information transfer process between the call processing processor CPR1 and the management processor MPR is not limited to that shown in the diagram, and many other modifications may be considered, but the effects of the present invention remain the same in any case. .

〔Effect of the invention〕

As described above, according to the present invention, in the electronic exchange, the frequency of information transfer between the call processing processor and the management processor due to the release of a communication path is significantly reduced, and the processing capacity of the call processing processor and the management processor is reduced. This increases the call processing capacity of the electronic exchange.

[Brief explanation of drawings]

FIG. 1 is a diagram showing an electronic exchange according to an embodiment of the present invention, FIG. 2 is a diagram showing an example of the call path release process in FIG. 1, and FIG. 3 is a diagram showing an example of a conventional electronic exchange. , FIG. 4 is a diagram showing an example of the communication path release process in FIG. 3. In the figure, 4 is the management processor (MPR); 5 is the management processor (MPR);
is a bus, 11 and 12 are call processing processors (CPR), 21 and 22 are network networks (NW), and 3
1 and 32 are subscribers, 41, 111 and 12
1 is a channel map (CHM), 42 is a central processing unit (CPU), 43 is a release information receiving unit (CMR),
61, 62 and 63 are communication control units (CHC);
112 and 122 are release information transmitting units (CMS);
p1 and p2 indicate communication paths.

Claims (1)

[Claims] 1. Equipped with a plurality of call processing processors that perform distributed control over respective communication path systems, and a management processor that centrally manages the plurality of call processing processors,
In an electronic exchange in which the management processor manages a channel map containing the idle/busy states of all the communication paths included in each of the communication path systems, each call processing processor has information on all communication paths included in the corresponding communication path system. A channel map is provided for recording the empty/blocked state of a communication path, and each time each call processing processor releases a communication path currently set in the corresponding communication path system, the released communication path is recorded in the corresponding channel map. . A channel map group release method, characterized in that the management processor is notified of all released communication paths recorded in the channel map at predetermined intervals.