JPH04157896A - Multi-ring bus system for exchange - Google Patents

Abstract

PURPOSE:To facilitate the switching control by using plural sets of bus systems in which plural call processors are connected to a management processor through a ring bus, and connecting the ring bus of one set and the ring bus of the other set by a bridge. CONSTITUTION:For instance, in the case it becomes necessary that a CPR 7 in the #0 system ring bus system and a called processor (CPR) 13 in the #1 system ring bus system execute a communication, a prescribed address code is sent out to a bridge (BRG) 15 from the CPR 7. As a result, the BRG 15 decodes the sent address code, and sends information sent from the CPR 7 to the CPR 13, based thereon. On the contrary, with respect to information to the CPR 7 from the CPR 13, as well, the BRG 15 intermediates in the same way. In such a way, even between the devices extending over the ring bus systems of different systems, a communication can be executed. Accordingly, each call processor can switch the system irrespective of a use state of the ring bus.

Description

[Detailed Description of the Invention] [Summary] Regarding a multiprocessor ring bus system for an exchange that enables communication across ring buses of different systems, each call The purpose of this system is to provide a multiprocessor ring bus system for switching equipment that enables switching of processor systems. A ring bus system is configured so that one set of ring busses and another set of ring passes are connected by a bridge.

[Industrial Application Field] The present invention relates to a multiprocessor ringbus system for an exchange that enables communication across different ringbus systems.

[Prior Art] In the field of wired communications, it is necessary to operate communication equipment in a manner that can maintain reliable communications, and therefore, duplex bus systems are often used in switchboards.

Among these bus systems, there is a bus system for exchanging data between processors, and conventionally this is M
PR (Management PROcessor)
It was composed of a star combination system centered on . FIG. 4 is a schematic configuration diagram showing a star-coupled bus system. In the same figure, the MPR includes a call processor (CP).
R+, CPR2, . . . , CPR, .) are connected via the #0 system bus. Each call processor is connected to a network (NW+, NW2,...
, NW, , ), and each network is connected to a telephone via a telephone line. A similar configuration is also constructed using the #1 system bus, and the bus system is duplexed.

In the above method, the call processor located under the MPH is a CCA (Channel t,o
Communication is carried out between the MPR and each call processor via a hash coupling device called Channel Adapt, er), and direct communication between the call processors is not possible, but always via the MPR. Communication was carried out by For this reason, the M
There was a problem in that the amount of data processed in PR was large, and the time required for communication was long.

In order to solve these problems, a multi-ring bus system has been proposed in which the star coupling method is abolished and a ring coupling method is adopted as the bus coupling method.

FIG. 5 is a schematic configuration diagram showing a multi-ring bus system. In the same figure, MPR and call processor (CP
R+, CPR2, . In addition, a similar configuration is also constructed with the #1 series ring lotus, and this ring bar 3'' streak stem is doubled.

[Problem to be solved by the invention] By the way, controlling this duplexed ring bus system requires extremely complicated processing, so the software responsible for controlling such processing also needs to be extremely complicated. It becomes.

In communication between call processors using a conventional star-coupled bus system, it is sufficient to communicate in a one-to-one relationship between the MPR and the call processor, so even if the MPR and call processor are duplicated, they can be easily controlled using a simple method. did it.

However, in a multi-ring bus system, multiple call processors including the MPR are connected to one ring bus, so if one of the call processors fails, one of the redundant ring buses that is unaffected by the failure The other ring bus will be used. Therefore, when the ring bus is switched, the MPR, call processor, etc. connected to the ring bus that is affected by the fault also needs to be controlled to switch to the other ring bus that is not affected by the fault. The disadvantage is that it is very complex.

The present invention is a multi-pro sensor for switching equipment that enables communication across ring buses of different systems, and allows individual call processors to switch systems regardless of the usage status of the ring buses. The purpose is to provide a ring bus system.

[Means to solve the problem]

FIG. 1 is a principle block diagram explaining the present invention. In the same figure, #0 system ring 8s 1 has a node (joining device)
2, a node 3, and a node 4 are connected, and a management processor (hereinafter referred to as MPR) 5 is connected to the node 2. Further, a call processor (hereinafter referred to as CPR) 6 is connected to the node 3, and a CPR 7 is connected to the node 4.

On the other hand, nodes 9, 10, and 11 are connected to the #1-system ring lotus 8 in the same way as the #O-system ring lotus 1, and the MPRI 2 is connected to the node 9. A CPR 13 is connected to the node 10, and a CPR 14 is connected to the node 11.

The #0 system ring bus 1 and the #1 system ring bus 6 are coupled via an electronic circuit (BPO 15) named a bridge that bridges information between both ring buses.

[For production]

Here, the part consisting of devices connected to the #0 system ring bus 1 in Fig. 1 is called the #0 system ring bus system.
The part consisting of devices connected to the 1st ring bus 8 is called #1.
We will call it the ring path system.

Normally, in the #0 ring bus system, MPR5,
Communication can be performed between CPR6 and CPR7. Similarly, in the #1 ring bus system, the MPR 12, CPR 13, and CPRl 4 can communicate with each other.

For example, C in the #0 series Ringhas system.
CPR13 in PR7 and #l ringhas system
If it becomes necessary to communicate with the CPR, for example,
7, a predetermined address code is sent to the BRG 15. Then, the BR015 decodes the sent address code, and based on it, sends the information sent from the CPR7 to the CPR13. On the contrary, the CP
Information from R13 to the CP R7 is also transmitted to the BRG 15.
similarly mediates. In this way, communication is possible even between devices spanning different ring bus systems.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 2 is a block diagram showing an embodiment of the present invention. In the same figure, the #0 system ring bus 21 has an MPR2
2 are connected via a node 23. Also, the #
CPRs 24, 25, and 26 are connected to the 0-system ring bus 21 via nodes 27, 28, and 29, respectively.

Although not shown in the figure, the maximum CPR is 63.
It is possible to connect the stand.

On the other hand, #1 ring bus 30 also has #0 ring bus 21.
Similarly, MPR31 is connected via node 32, and CPR33, 34, 35 are connected to nodes 36, 37, 38.
are connected through each. The #0 system ring bus 21 and the #1 system ring bus 30 are BPO
39.

This BPO 49 has a bridge processor (BPR 40) and a bridge processor (BPR 41), and this BPR 41 is connected to the #1 system ring bus 30 via a bridge node 42. Further, the BPR 40 connects to the #0 system ring bus 21 via the bridge node 43.
is connected to. Although not shown, each call processor is connected to a network including a group of exchange switches, and each network is connected to a telephone set via a telephone line. Further, the ring hubs 21 and 22 of the embodiment are configured as optical transmission lines formed of optical fiber cables or the like.

FIG. 3 is a circuit block diagram showing a more detailed configuration of the bridge. In the figure, the BPR 40 has a central controller CCO, and this central controller CCO has a main memory M M .

and a channel controller CHCo are connected.

This channel controller CHCo then connects to the lotus interface Bl via the common bus 0. The bus interface BI2 is connected to the bridge node 43, and the bus interface Blo is connected to the bridge node 42. In this system, the bridge processors are duplicated to ensure reliability. That is, B
PR41 is also configured in the same manner as BPR40, and B
PR41 is the central controller CC.

This central controller CCI has a main memory M M 1 and a channel controller CHCl.
is connected. This channel controller C)
TC+ is connected to the bus interface Bll and the bus interface Bli via the common bus 1, and this bus interface BI3 is connected to the bridge node 4.
3, and the bus interface Bl is connected to the bridge node 42. Note that the central controller is of a hot standby type in which one of the central controllers is always in operation; the central controller in the operating state is called ACT (ACT), and the central controller in the standby state is called SBY (standby).

For example, to explain the operation of the system in the case where data is sent from the MPR 31 to the CPR 26, the data issued from the MPR 31 is sent to the node 3.
This node 32 processes the sent data into a predetermined format and sends it to the #1 ring bus 30. Said #1 ring bus 30
The contents of the address information of the data sent to #
If it matches the destination address assigned to a node other than the bridge node 42 connected to the 1-system ring bus 30,
The node with the corresponding destination address receives the data sent thereafter, and communication is performed between them. If not, the bridge node 42 is responsible for receiving it. In this example, the destination address is #0 ring path 21.
The bridge node 42 receives the data and first checks and confirms the destination address. Checking and confirmation of this destination address is performed by the BPR 40. In this case, the central controller CCO is
At T, the central controller CCI is SBY.

The destination address received at the bridge node 42 is sent to the central controller CC through the bus interface Bl, the channel controller CHC+.
o, where the destination address is parsed. If this analysis reveals that the address is for a node that does not exist on either the #0 system ring bus 21 or the #1 system ring bus 30, the MPR 31 will be notified of the abnormality. to end the process.

As a result of the analysis, the destination address is the #0 system ring bus 21.
, the central controller CCo receives all necessary data from the bridge node 42 and sends the received data to the bridge node 43 through the channel controller CHC+ and the bus interface BI2. . This bridge node 43 sends data to the CPR 26 as if the data were sent from the bridge 39. As described above, the MPR 31 can send data to the ring bus of another system without being aware of the existence of the bridge 39. In addition, the CPR2
6 to the MPR 31, or the #0 system ring bus 13 = the CPR on the S21 side and the CP on the #1 system ring bus 30 side.
When communicating with R, mutual access is possible by prefixing the address as in the case described above.

〔Effect of the invention〕

As explained in detail above, according to the present invention, communication across ring buses of different systems is possible, and individual call processors can switch systems regardless of the usage status of the ring buses. become able to. Further, by configuring the ring buses 21 and 22 with optical transmission lines, it becomes possible to perform the above-described communication at high speed and in large quantities.

[Brief explanation of drawings]

Fig. 1 is a principle block diagram explaining the present invention, Fig. 2 is a block configuration diagram showing an embodiment of the invention, Fig. 3 is a circuit block diagram showing a more detailed structure of the bridge, and Fig. 4 is a star block diagram. FIG. 5 is a schematic configuration diagram showing a combined type bus system. FIG. 5 is a schematic configuration diagram showing a multi-ring bus system. 1.8...Ring bus, 2, 3. 4. 9. 10. 11 ・ ・ ・
- Node, 5.12...MPR. 6.7.13.14...CPR 15...BRC;.

Claims (1)

[Claims] 1) Using a plurality of bus systems in which a plurality of call processors (6, 7, 13, 14) are connected to a management processor (5, 12) via a ring bus (1, 8). Configure the multi-ring bus system (#0, #1),
One group of ring buses (1) and the other group of ring buses (
8) connected by a bridge (15). 2) The multi-ring bus system for an exchange according to claim 1, wherein the ring bus is an optical transmission line.