JPH03195156A - Method and device for line rearrangement - Google Patents

Abstract

PURPOSE:To enable rearrangement without being conscious of a connection change by a subscriber under use and to improve service or maintenance work by executing double connection during a call on a call originating side exchange side and next changing the connection of a channel to the second line at a call incoming side exchange. CONSTITUTION:In addition to a fault line 2, an idle line 4 is also connected to the channel of a call originating side exchange 11 and the double connection is realized. Next, the connection of the channel is changed to the idle line 4 at a call incoming side exchange 2 and afterwards, the fault line 3 is cut off from the channel at the call originating side exchange 1. In such a way, one line is cut off after the exchanges 1 and 2 automatically double-connect the lines. Thus, the line can be rearranged without interrupting communication in recognizing the rearrangement of the line in use by the subscriber for the subscriber under communication. Therefore, the service or the maintenance work can be improved.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method and device for relocating lines in an 15DN switching network, and particularly relates to a method and apparatus for relocating lines in an 15DN switching network, and in particular, for connecting a line in use to an idle line in the working system without interrupting the call. The present invention relates to a line relocation method and device suitable for line replacement.

[Conventional technology]

The 15DN switching network handles information transmitted and received at different communication speeds, such as voice, video, and data, in a unified manner. Therefore, when there is a request for a high-speed call that uses multiple consecutive lines, in order to connect the scattered free lines, the lines of the low-speed calls in progress are rearranged to ensure continuous free lines and the high-speed call is made. needs to be answered. This line relocation is also necessary when the line being used for communication is to be reconnected to another line due to construction work, or when a failure occurs in the line being used for communication and the line is to be reconnected to another line. become.

As a conventional technology regarding this line relocation, Japanese Patent Laid-Open No. 61-
There is one described in No. 244159. In this prior art, when connecting a line in use to an idle line, a request is made to the subscriber in communication to interrupt the communication, and when the subscriber agrees, the line is reconnected.

[Problem to be solved by the invention]

In the above-mentioned conventional technology, when relocating a line, the consent of the subscriber who is communicating is obtained, so the protocol for line relocation is taken into account for non-telephone terminals such as video terminals and data terminals. There is a problem in that it has to be made in advance and is troublesome. Further, from the viewpoint of the subscriber who is communicating, it is troublesome to be asked to agree on -, and there is also the problem that the communication is interrupted, which is inconvenient.

SUMMARY OF THE INVENTION An object of the present invention is to provide a line relocation method and device that does not require subscribers to be aware of line relocation or to consciously create a protocol.

[Means to solve the problem]

The purpose of the above is to improve the ability of the originating exchange to communicate with the originating exchange when a failure occurs in the active line between the originating exchange and the destination exchange. In addition to the faulty line, the idle line is also connected to the road.
Then, the destination exchange reconnects the call path to the empty line, and then the originating exchange disconnects the faulty line from the communication path without interrupting the call (relocating the line). It is achieved by doing.

In addition, the above purpose is to secure the high-speed vacant line by referring to the line map when multiple in-use low-speed lines exist discretely on each transmission path and it is not possible to capture the high-speed vacant line. After determining the line area and doubly connecting the low-speed line in use in the line area to the low-speed idle line of another transmission line, the in-use low-speed line is cut off based on the inter-office signal, without interrupting the call. This is achieved by securing a high-speed empty line on the transmission path that is an integral multiple of the continuous basic speed line.

[Effect]

If it becomes necessary to rearrange lines, the exchange automatically double-connects the lines and then disconnects one line, allowing subscribers to use their own network without interruption. Line relocation is performed without the user being aware that the existing line has been relocated.

Therefore, if a high-speed line becomes necessary when applied to an 15DN switched network, the exchange automatically activates the high-speed idle line without causing any inconvenience to subscribers who are using each basic speed line. It becomes possible to secure the

In the present invention, unlike switching from a working system to a protection system in a simple duplex system, a free line in the working system is captured and a line in use is switched to this free line without interrupting the call. Therefore, if a backup line is added to the device of the present invention to create a redundant configuration, even if one of the active lines fails, the switch will first be made to the idle line in the active line before switching to the protection line. The system can stand by as a true standby system, increasing the reliability of the entire system.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 3 is a configuration diagram of an exchange equipped with a line relocation device according to an embodiment of the present invention. This exchange includes a time division communication path 301, a central processing unit 303 that controls the connection of the communication path 301, a memory 302 that is accessed from the central processing unit 3, a signaling device 304, and a digital transmission path. 305 and 306 are accommodated in the time division communication path 301, and interoffice signal lines 307 and 308 are accommodated in the signal device 304.

Call control signals between this exchange and another exchange (not shown) reach the central processing unit 303 via the interoffice signal line 307 (or 308), and the central processing unit 303 receives the call control signals stored in the memory 302. By referring to data such as a line map, etc., and executing a program stored in the memory 302, the time-division communication path 301 is controlled and the transmission path 30
5.306 exchange connection or memory 302
Manage data within.

FIG. 4 is an explanatory diagram of the line map stored in the memory 302. This line map shows the free/occupied state on the transmission path for each basic speed. In FIG. 4, the horizontal axis X shows the time slots for each basic speed, and the vertical axis y shows the transmission path.

In this illustrated example, the time slot numbers x = 1.2, 7.8 on the transmission path of y = 1 have a value of "1" indicating an idle line state.
”, and the time slot number x = 3.4, 5.
6 is the value "0" which indicates the line status in use.

Furthermore, in the transmission path Y=2, the time slot number X=1.
2,5.6 are currently in use.

In the example line map shown in FIG. 4, there are no vacant high-speed lines four times the basic speed. Now, when a request to capture this high-speed line occurs, the central processing unit 303 refers to this line map and selects the slot number x=1 on the transmission line y-2. The communication line of x=2 is connected to the transmission line y= of the upper slot number x=1. x
By relocating to the vacant line of =2, you can secure the line of consecutive slot number x = 1.2.3.4 on the transmission path y = 2, which allows you to respond to calls at 4 times the basic speed. Detect that.

FIG. 1 is a diagram showing the connection switching order for line relocation, and FIG. 2 is a sea case diagram of interoffice signals transmitted and received between the originating exchange and the destination exchange during line relocation.

Originating network 1 in the originating exchange that performs circuit relocation
is connected to the destination network 2 in the destination exchange via the relocation source transmission line 3.

When the central processing unit 303 detects the relocation destination transmission path 4, the originating exchange makes the communication path (relocation source path) 5 of the originating network 1 double-connected to the originating relocation destination bus 6, and A relocation request signal 201 in FIG. 2 is sent to the side exchange.

When the destination exchange confirms that relocation is possible due to line management, it returns a relocation confirmation signal 202 shown in FIG. 2 to the originating exchange. When the originating exchange receives this relocation confirmation signal 202, it sends the relocation synchronization signal 203 shown in FIG. 2 to the destination exchange.

When the destination exchange receives this relocation synchronization signal 203, it relocates the relocation source path 7 of the destination network 2 to the relocation destination bus 8, and sends the relocation synchronization confirmation shown in FIG. 2 to the originating exchange. A signal 204 is sent out.

When the originating exchange receives this relocation synchronization confirmation signal 204, it disconnects the originating relocation source path 5 and opens the relocation destination transmission line 3. As a result, the call in progress on the transmission line 3 continues without interruption on the transmission line 4.

The above-mentioned embodiments can also be applied to the case where a faulty line is connected to a normal line in the working system, or to the case where a busy line is reconnected to a free line in the working system due to construction work. It goes without saying that it can be done.

〔Effect of the invention〕

According to the present invention, when a faulty line or a line subject to construction is relocated to an unoccupied line in the working system, the relocation can be done without making the subscriber in use aware of the connection change, and the service can be improved. It is possible to improve performance and maintenance work. In addition, even if the line usage status becomes discrete due to a subscriber's arbitrary line usage request, line reallocation is actively executed to enable line capture for high-speed calls, improving line usage efficiency. You can also do it.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of a connection switching procedure by line relocation according to an embodiment of the present invention, FIG. 2 is a sequence diagram of interoffice signals between exchanges during line relocation, and FIG. 3 is an embodiment of the present invention. FIG. 4 is a block diagram of an exchange equipped with a line relocation device according to an example, and is an explanatory diagram of a line map. 1... Source network, 2... Destination network, 3... Relocation destination transmission line, 4... Relocation destination transmission line,
57...Relocation source path, 6,8...Relocation destination bus,
302...Memory, 303...Central processing unit, 30
4...Signal device. Diagram

Claims (1)

[Scope of Claims] 1. In a line relocation method for reconnecting a busy first line between an originating exchange and a destination exchange to a second line in a non-talking state in a working line, the originating exchange During a call, the second line is connected in addition to the first line to make a double connection, and then the destination exchange switches the call route to the second line, and then the originating exchange connects the second line to the second line. A line relocation method characterized by cutting off one line from a communication path and relocating the line without interrupting the call. 2. In a line relocation device that connects a busy line to an empty line between the originating exchange and the destination exchange, if the own exchange is the originating side, it captures the idle line in the working line and calls the communication route. In addition to the intermediate line, the idle line is also connected and a line relocation synchronization signal is sent to the destination exchange, and when a line relocation synchronization confirmation signal is received from the destination exchange, the communication path and the active line are connected. means for cutting off the connection; and, if the own exchange is the terminating side, reconnecting the communication path to the vacant line when receiving the line relocation synchronization signal from the originating exchange and confirming the line relocation synchronization with the originating exchange; 1. A line relocation device comprising: means for transmitting a signal. 3. In the line relocation method that connects the faulty line to a normal, empty line when a fault occurs in the active line between the originating exchange and the destination exchange, the idle line in the working line is captured and the call is made. In addition to the faulty line, the empty line is also connected to the communication path of the side exchange to create a double connection. Next, the destination exchange switches the communication path to the empty line, and after that, the originating exchange connects the empty line to the faulty line. A line relocation method characterized by relocating the line without cutting off the line from the call path and interrupting the call. 4. In a line relocation method that connects the call line between the originating exchange and the destination exchange to an empty line during line relocation work, the idle line in the working line is captured and the said call is transferred to the communication path of the originating exchange. In addition to the line, the empty line is also connected to make a double connection,
A line characterized in that the destination exchange reconnects the communication line to the vacant line, and then the origination exchange disconnects the communication line from the communication path and performs line relocation work without interrupting the communication. Relocation method. 5. An exchange equipped with the line relocation device according to claim 2, characterized in that it adopts a signaling system in which the line relocation synchronization signal and the line relocation synchronization confirmation signal are transmitted and received as interoffice signals. 6. In a multiple access switching method that uses multiple multiplexed transmission lines and performs switching at different speeds that are integral multiples of the basic speed line, multiple low-speed lines in use exist discretely on each transmission line. When it is not possible to acquire a high-speed empty line,
Determine a line area in which to secure the high-speed free line by referring to the line map, double connect the low-speed line in use to the low-speed line in use in the line area, and then connect the low-speed line in use to the low-speed line in use in the line area. A multiline line relocation method that secures a continuous high-speed empty line that is an integral multiple of the basic speed line on the transmission path without interrupting the call based on the inter-office signal. 7. A line map showing the idle status of each basic speed line in a multiple access exchange where a plurality of multiplexed transmission lines are connected and exchange at different speeds that are integral multiples of the basic speed line, and the line map Referring to 2006-2011, the method includes means for doubly connecting a low-speed idle line of another transmission line to a low-speed line in use, and means for cutting off the low-speed line in use based on an inter-office signal after the double connection. A multi-line relocation device characterized by: 8. In the line relocation method of connecting a busy line to a non-calling line, the non-calling line in the current line is captured, the non-talking line is double-connected to the busy line, and then the busy line is cut off and the call is made. A line relocation method characterized by reconnecting lines without interrupting the process.