JP2674003B2 - Time division switch control memory copy method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a copy system in a time-division switch of a duplexed exchange, in which the contents of the control memory of the time-division switch in the operating state are stored in the standby time-division switch. The present invention relates to a time-division switch control memory mopy method for copying to a control memory. [Prior Art] Conventionally, in the control memory copy method of this type, when copying the control memory of the time-division switch, generally, the control memory is separated from the communication path control unit and connected to the copy control unit to perform copying. The method was adopted. [Problems to be Solved by the Invention] In the conventional control memory copy method as described above, since the control memory and the communication path control unit are separated,
There was a problem that call processing was interrupted. [Means for Solving the Problems] In view of the above points, the present invention has been made to solve such a problem and eliminate such a drawback, and its purpose is to interrupt call processing by a simple configuration. Without
An object of the present invention is to provide a time-division switch control memory copy method capable of copying the control memory of the time-division switch. In order to achieve such an object, the present invention provides a time-division switch control memory copy method for copying the contents of the control memory of the time-division switch in the operating state to the control memory of the time-division switch in the standby state. The control memory, a call path switch connected to the control memory, a call path control unit that sends a write order for setting a call path, and a read / write order of data from the control memory. A copy control unit, an order changeover switch for selecting one of an order from the call path control unit of its own system and an order from the call path control unit of another system, and the order selected by this order changeover switch and the order The order from the copy control unit is multiplexed and written or read in the control memory. A order multiplexing unit which issued to connect the copy control unit of the time-division switch to each other,
If the control memory of the operating time division switch is not copied to the copy of the control memory of the standby time division switch, both the time division switch in the operation state and the order changeover switch of the time division switch in the standby state If you want to select the order from the local channel control unit and copy from the control memory of the time division switch in the operating state to the control memory of the time division switch in the standby state, order the time division switch in the operating state. Let the changeover switch select the order from the call path control unit of the own system,
When selecting an order from the other channel control unit of the time-division switch in the standby state and copying from the control memory of the active time-division switch to the control memory of the time-division switch in the standby state ,
The copy control unit of the time division switch in the operating state reads the data from the corresponding address of the control memory of its own system,
After transferring this data to the copy control unit of the other system and writing it to the control memory of the other system, read the data of the same address of the control memory of the own system again and write it to the control memory of the other system. If it matches, the data is read from the next address and the process moves to the copy process, while if it does not match, the data is read again from the corresponding address in the control memory of the own system and another data is copied. Transfer to the control unit and write to the same address as the previous writing process of the control memory of other system,
The data at the same address in the control memory of the own system was read again to check the difference from the data written to the control memory of the other system, and the data was read from the corresponding address until the two match and the copy process was repeated. It is a thing. [Operation] Therefore, according to the present invention, when the control memory of the operating time division switch is copied to the control memory of the standby time division switch, the order changeover switch of the operation time division switch is automatically operated. The order from the communication path control unit of the system is selected, and the order change switch of the time division switch in the standby state selects the order from the communication path control unit of the other system. In this case, the copy control unit of the time division switch in the operating state reads the data from the corresponding address of the control memory of the own system, transfers this data to the copy control unit of the other system, and transfers it to the control memory of the other system. Write. Then, the data of the same address in the control memory of the own system is read again to check the difference from the data written in the control memory of the other system. Here, if the two match, the process proceeds to the copy process by reading the data from the next address. If they do not match, the data is read again from the corresponding address in the control memory of the local system, this data is transferred to the copy control unit of the other system, and the address is the same as the previous write processing of the control memory of the other system. Write. Then, the data of the same address in the control memory of the own system is read again to check the difference from the data written in the control memory of the other system. Here, if the two match, the process proceeds to the copy process by reading the data from the next address. If they do not match, the data is read again from the corresponding address of the control memory of the own system, and the above processing operation is repeated. Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. The figure is a block diagram showing an embodiment of the present invention, and shows only a portion necessary for explanation. In the figure, 1 is a time divisional switch in the first system, and this time divisional switch 1 is a control memory (time divisional switch control memory) 5, a speech path switch 3 connected to this control memory 5, and a speech path. Communication channel control unit 13 for transmitting a write order to set the number, a copy control unit 9 for transmitting and receiving a data reading and writing order from the control memory 5, and an order from the communication channel control unit 13 of the own system. Order change switch 11 for selecting one of the orders from the other system and the communication path control unit 14
And an order multiplex section 7 that multiplexes the order selected by the order changeover switch 11 and the order from the copy control section 9 to write or read the control memory 5. On the other hand, 2 is a time divisional switch in the second system, and the time divisional switch 2 corresponds to each part of the time divisional switch 1 in the first system, respectively, a communication path switch 4, a control memory 6, and an order multiplex part. 8, a copy control unit 10, an order changeover switch 12, and a communication path control unit 14. Then, the copy control units 9 and 10 of the time divisional switches 1 and 2 are connected to each other, and the copy control unit 9 can write data into the control memory 6 via the copy control unit 10 and copy control is performed. The unit 10 can write data into the control memory 5 via the copy control unit 9. Next, the operation of the embodiment shown in this figure will be described. Now, it is assumed that the time divisional switch 1 in the first system is in the operating state and the time divisional switch 2 in the second system is in the standby state. At this time, the order change switch 11
Is connected to the call path control unit 13 side, and the order changeover switch 12 is connected to the call path control unit 14 side. Under such circumstances, copying from the control memory 5 of the time division switch 1 in the operating state to the control memory 6 of the time division switch 2 in the standby state is performed as follows. That is, when copying from the control memory 5 to the control memory 6, first, the order changeover switch 11 of the time division switch 1 is connected to the channel control section 13 side of the own system, and the order changeover switch 12 of the time division switch 2 is connected. It is connected to the channel control unit 13 side of the other system. Next, after the copy control unit 9 of the time division switch 1 reads data from the corresponding address of the control memory 5, the call path control unit 13 causes the copy control unit 9 to read the data.
Different data is written to the same address of, and then the copy control unit 9 writes old data to the corresponding address of the control memory 6, and whether there is a situation where the contents of both control memories 5 and 6 do not match. Copy operation is performed while inspecting. Finally, the copy control unit 9 reports the end of copying. Next, the above-mentioned data copy procedure will be described. First, the copy control unit 9 of the time divisional switch 1 reads data from the corresponding address of the control memory 5 of its own system, transfers this data to the copy control unit 10 of the other system, and controls it via the copy control unit 10. Write to memory 6. Next, the copy control unit 9 rereads the data at the same address in the control memory of its own system and checks the difference from the data written in the control memory 6 of the other system. Here, if the two match, the process proceeds to the copy process by reading the data from the next address. If they do not match, the data is read again from the corresponding address in the control memory 5 of the own system, this data is transferred to the copy control unit 10 of the other system, and the previous writing of the control memory 6 is performed via the copy control unit 10. Write to the same address as when processing. Then, the data of the same address in the control memory 5 of the own system is read again, and the difference from the data written in the control memory 6 of the other system is inspected. here,
If the two match, the data is read from the next address and the copy process is started. If they do not match,
The copy processing operation of reading the data from the corresponding address of the control memory 5 of the own system again is repeated. According to the copy procedure described above, the content of the control memory 5 is copied to the control memory 6 without interrupting the call processing while the call path controller 13 is allowed to write in the control memory 5. You can [Effects of the Invention] As described above, according to the present invention, it is possible to accurately control a time division switch in an operating state by using a simple configuration without using complicated means and without interrupting call processing. The contents of the memory can be copied to the control memory of the time division switch in the standby state, and the practical effect is extremely large.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention. 1,2 …… Time division switch, 3,4 …… Call path switch, 5,6
...... Control memory, 7,8 ...... Order multiplex section, 9,10 ......
Copy control section, 11, 12 ... Order change switch, 1
3,14 …… Call path controller.

Claims (1)

(57) [Claims] In the time-division switch control memory copy method of copying the contents of the control memory of the operating time-division switch to the control memory of the time-division switch in the standby state, each of the time-division switches is connected to the control memory and this control memory. Call path switch, a call path control unit that sends a write order to set a call path, a copy control unit that sends and receives a data read / write order from the control memory, and a call of the own system An order changeover switch for selecting one of the order from the path control unit and the order from the communication path control unit of the other system, and the order selected by the order changeover switch and the order from the copy control unit are multiplexed and An order multiplex section that writes or reads in the control memory When the copy control sections of the time division switches are connected to each other and the control memory of the time division switch in the operating state is not copied from the control memory of the time division switch in the standby state, Both the division switch and the order change switch of the time division switch in the standby state select the order from the communication path control unit of the own system, and the control memory of the time division switch in the active state is changed to the control memory of the time division switch in the standby state. When copying, let the order changeover switch of the time division switch in the operating state select the order from the call path control unit of the own system, and the order changeover switch of the time division switch in the standby state to the call path control unit of the other system. From the control memory of the operating time-division switch to control the standby time-division switch from the control memory. When copying to the control memory, the copy control unit of the time division switch in the operating state reads the data from the corresponding address in the control memory of the own system, transfers this data to the copy control unit of the other system, and transfers it to the other system. After writing to the control memory of the other system, the data of the same address of the control memory of the own system is read again and the difference from the data written to the control memory of the other system is inspected. If they match, the data is read from the next address. On the other hand, if it does not match, the data is read again from the corresponding address in the control memory of the local system, this data is transferred to the copy control unit of the other system, and the previous data in the control memory of the other system is transferred. Write to the same address as the write process, read the data at the same address in the control memory of the local system again, and write it to the control memory of another system A time-division switch control memory copy method, which is characterized by inspecting the difference from the input data and reading the data from the corresponding address and repeating the copy process until the two match.