JPS60183849A - Packet exchange dividing system - Google Patents

Abstract

PURPOSE:To shorten the communication interruption time when a subscriber's terminal is shifted from one plane to another and simplify the shifting work, by storing transfer state management information of subscriber units in an already provided exchange and setting a copy of subscriber data of a shift object subscriber to a new provided exchange. CONSTITUTION:A control part 13 of an already provided exchange 1 is provided with a transfer state management information storage part 14, and a new provided exchange 2 is provided with a subscriber data pool 10B and a setting part 12. When a subscriber's terminal is shifted from one plane to another, change of subscriber data of this shift object terminal is inhibited in the exchange 1, and pertinent data in a subscriber data pool 10A is transmitted as a packet to the exchange 2 by a packet transmission control part 8A. In the exchange 2, subscriber data in said packet is set to the pool 10B by the setting part 12 and a packet reception control part 9B. After this transfer is completed, the control part 13 instructs retransfer of a coming calling packet to the exchange 2 and starts a call setting block 15A to indicate cut-off of logical channels during all transmission of the shift object subscriber. Thereafter, a communication line is switched.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a packet exchange division system for relocating and accommodating subscriber terminals from an existing exchange to a newly installed exchange when the number of subscribers increases. .

[Background of the invention]

In order to perform station division in a packet switch, subscriber terminal management data (hereinafter simply referred to as "subscriber data") stored in the memory of the switch must be transferred to the new switch, and subscriber lines must be relocated. need to be done.

Conventional station division was performed as follows.

The first method is to output the subscriber data in the existing exchange to a magnetic tape, etc., and then perform off-line processing based on this data to separate the L subscriber data into magnetic tapes for the existing exchange and for the new exchange. create. Next, the separated magnetic tape data is written to each of the existing and new exchanges, and then the lines of the subscriber terminals to be relocated and accommodated from the existing exchange to the new exchange are sequentially switched to resume communication. be.

In this method, the off-line processing of dividing the subscriber data takes an extremely long time, so there are many changes to the subscriber data in the existing exchange during this period, and the subscriber data after the division is When setting up an existing exchange, there were problems such as requiring communication for all subscribers to be switched to medium+L, and the communication interruption time for subscriber terminals being relocated to a new exchange would be longer.

In addition, in the second method, a service order process is performed to record the information of a subscriber terminal to be relocated in a newly installed exchange, and subscriber data is created.

There is a method in which a service order process for canceling a subscriber is performed in an existing switching machine, and then the line is switched and communication is restarted.

However, even with this method, a large number of service order commands are required to register new terminals at newly installed exchanges and to take over information written by subscriber terminals themselves, such as destination information for speed dial services. It is necessary to input the data into the exchange, which increases the amount of work and causes problems in that the division of stations takes a long time.

[Purpose of the invention]

The present invention has been made in view of the above circumstances, and its purpose is to solve the above-mentioned problems in the conventional Pagaso 1 switching center division system, shorten the communication interruption time of relocated terminals, and The purpose of the present invention is to provide a system for dividing exchanges into buckets 1, which makes it possible to simplify the relocation work.

[Summary of the invention]

The gist of the present invention is to provide at least an existing exchange with a storage section for storing transfer status management information for each subscriber, and to
After providing a setting section for setting a copy of the subscriber data of the subscriber to be relocated in the new exchange, and setting a copy of the subscriber data of the subscriber to be relocated in the existing exchange in the new exchange using a trunk line. , the communication line accommodating the subscriber terminal is transferred from the existing exchange described in 2 to the new exchange, and the subscriber number translation table of all exchanges in the packet switching network is changed after the relocation of all terminals is completed. Until the end of the process, the call setup bucket l- addressed to the relocated subscriber terminal arriving at the existing exchange is transferred from the existing exchange to the new exchange, which is a relocated optical switch.

[Embodiments of the invention]

EMBODIMENT OF THE INVENTION Below, one embodiment of the present invention will be described in detail based on the drawings.

FIG. 1 is a block diagram showing the configuration of an exchange capable of performing station division processing, which is an embodiment of the present invention.

In the figure, ■ indicates an existing exchange, 2 indicates a newly installed exchange, 3 indicates other general exchanges, and 11 to 7 indicate relay lines for transmitting and receiving packets between these exchanges.

In the above existing exchange, there is a packet transmission control section 8A.
, packet reception control section 9A.

Subscriber data pool IOA, reading unit 11. Control part 1
3 and a call setting block 15A are provided. In addition, in the newly installed switch 2 described in 1.
, packet receiver 48 control unit 913. Subscriber data pool 1
0B, setting section J2. A call setup block 15I3 is provided.

”2 Packet transmission control units 8A, 8B and buckets 1~
The reception control units 9C and 9B are for transmitting and receiving packets]1
It has the function of order control.

The subscriber data pool +OA and JOB contain various types of data for controlling exchange accommodation and terminal control. Further, the reading unit 11 has a function of reading the subscriber data of the subscriber to be relocated from the existing exchange 1 and creating a packet to be transferred to the new exchange 2.

The setting unit j2 stores the transferred joining line data in the new exchange 2 and sets it in the subscriber data pool 10[3 in the new exchange 2, so that communication with the new exchange 2 is possible. It has the function of

The control unit 13 controls the above-mentioned processes, and has a state management information storage unit 14 that stores state management information according to the transfer stage of each accommodated terminal.

The call setting blocks 15A and 15B have a function of processing call requests from subscriber terminals and setting logical channels for transferring data packets between subscriber terminals.

The flow of the station division processing in this 19th embodiment will be explained below.

The maintenance name of the existing exchange l specifies the subscriber number of the terminal to be relocated using a maintenance command, and instructs the control unit 13 to start transferring subscriber data. The control section 13 sets the state management information in the state management information storage section 14 to "transferring subscriber data", thereby prohibiting subsequent changes to the subscriber data. 13 activates the reading section +1.

The reading unit 11 reads the subscriber data from the subscriber data pool lOΔ, copies it into the subscriber data transfer bucket 1~, and then transfers it to the packet transmission control unit 8A.The packet reception control unit 8A performs procedure control. , and sends the second packet to the newly installed exchange 2 via the trunk line 5.

After receiving this packet, the newly installed switch 2
Receive (take over to Q control unit 913. Packet reception control unit 9B
performs procedural control, and then sets the paqueso 1- to the setting unit 12.
take over. The setting unit 12 sets the subscriber data of the relocated terminal in the subscriber data Boolean 1013 in the newly installed exchange 2 based on the subscriber data set in the ``2nd bank account 1''.

"Double subscriber connection from existing exchange 1 to new exchange 2 -
The evening transfer process is repeated multiple times depending on the star of the subscriber data to be transferred. When this transfer process is completed, the control unit 13 of the existing exchange 1 instructs the retransfer of the incoming call packet to the new exchange 2 by setting the status management information in n(1) to "Relocation relaying". At the same time, the call setting block 15Δ is activated to instruct disconnection of the logical channel during the entire communication hT of the subscriber to be relocated.

After that, the maintenance bank switches the communication line of the subscriber to be relocated from the existing exchange 1 to the new exchange 2.

FIG. 2 shows the transition of two sets of state management information. It is also possible to go back to "Communicating" from each state of "Transferring subscriber data" or "Transferring and relaying", and even if communication is not possible with the new exchange 2 after relocation, communication with the existing exchange 1 can be easily resumed. Can be restarted.

Next, a method for resuming communication in the newly installed exchange 2 after switching the subscriber's communication line will be explained with reference to FIG.

FIG. 3 shows a case where a call is made from a terminal accommodated in general exchange 3 to a subscriber terminal relocated to newly installed exchange 2. In FIG. In fig.

Symbols 1 to 3 and 14 indicate the same components as shown in FIG. Call packet transfer path 19 indicates an incoming call acceptance return path from the terminal 17 to terminal IG.

The call 1- from the calling terminal 16 temporarily arrives at the existing exchange 1 in which the terminal 17 was accommodated until the subscriber number translation table of the general exchange 3 is changed.

The control unit 13 of the existing exchange 1 determines that since the status management information is "relocating and relaying", the terminal 7 has already been transferred to the new exchange 2.
11, the calling party 1- is retransferred to the newly installed exchange 2.

The newly installed exchange 2 transfers the Thursday call bucket 1- to the terminal 17. The terminal 17 returns the incoming call bucket 1- to the terminal 16, and a logical channel between the terminals 16 and 17 is established. ” - In-network transfer lever j, lj of incoming call reception page 1-
/ is a transmission line, and is transferred via one switchboard, one switchboard, or directly via switchboard three.

After all subscriber-, 'S, Q::r terminals have been set up, all subscribers of all exchanges in the network, ml:ji, J(; , arrives at the new exchange 2. Therefore, at this point, the subscriber data of the existing exchange 1 is erased, and the contents of the status management information storage unit 14 are set to "uninstalled".
becomes.

According to the above embodiment, by configuring the exchange to have the functions as described above, the terminal to be relocated is divided into two stations so that the subscriber data used in the existing exchange until immediately before the relocation is transferred as is. It becomes possible to transfer the subscriber data of the current subscriber terminal to the newly installed exchange in the latest state.

〔Effect of the invention〕

I said it! According to the present invention, in a packet switching center division method in which a part of the subscriber terminals accommodated in an existing switch is relocated and accommodated in a newly installed switch of a bucket switching network, at least subscriber C1t is transferred to the existing switch. In addition to providing a storage unit for storing transfer status management information of 2), a setting unit for setting a copy of the subscriber data of the subscriber to be relocated is provided in the newly installed exchange, and transfer status management information is sequentially set in the storage unit. At the same time, a copy of the subscription and data of the subscriber to be relocated in the existing exchange is set up in the new exchange using a relay line, and then the communication line t! : 1- During the transfer from the existing exchange to the new exchange, until all terminals have been relocated and the subscriber number translation tables of all exchanges in the exchange network have been changed to Pakeso 1, the The call setup packet i~ addressed to the relocated subscriber's terminal arriving at the existing exchange is transferred from the existing exchange to the newly installed switch, which is the relocated optical fiber, and the call setup bucket 1~ is transferred to the relocated subscriber in the new switch. Since the data is transferred to the terminal, it has the remarkable effect of shortening the communication interruption time of the relocated terminal and realizing a packet switching center division system that can simplify the relocation work.

In addition, for terminals that have been relocated, by retaining the display "Relocated phase 1 in progress" in the existing exchange, calls to the calling Pakeso 1 can be transferred to the relocated terminal, so communications can be made immediately after relocation. It is possible to set up a logical channel for the exchange, which can minimize the impact on subscriber communications.Furthermore, the information that the exchange maintenance line inputs into the exchange in order to activate subscriber data transfer is )・The subscriber number of the 1st member subscriber is enough, and the maintenance work) 4 also has the effect of making it easier in the middle.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an exchange that is an embodiment of the present invention, FIG. 2 is a diagram showing the transition of state management information, and FIG. 3 is a diagram showing the transition of state management information.
The figure shows the packet transfer route to the subscriber terminal after relocation. 1: Existing switch, 2: New switch, 3: General switch,
4 to 7: Relay line, 8A, 8B: Packet transmission control unit,
! 3A, 9B: Packet reception control unit, IOA, IO
B: Subscriber data pool, 11: Reading unit, ■2: Setting unit, 13: Control unit, 14: Status management information storage unit, 1
5A, 15B: Call setup block, 16.17: Terminal, 18, +9: Packet transfer route. Patent Applicant: [1 Telegraph and Telephone Corporation FYC, A□□Eng. , 11. ,,l. Figure 1

Claims (1)

[Claims] (1) Bucket 1 - In the packet switching center division method in which a part of the subscriber terminals accommodated in an existing switch is relocated and accommodated in a newly installed switch in the switching network, transfer of subscriber units to at least ``-2 existing switches In addition to providing a storage unit for storing status management information, a setting unit for setting a copy of the subscriber data of the subscriber to be relocated is provided in the 4-2 newly installed exchange, and transfer status management information is sequentially set in the storage unit. After setting a copy of the subscriber data of the subscriber to be relocated in the existing exchange in the above setting section using a relay line, install a new communication line to accommodate the subscriber's terminal from the existing exchange. While relocating to the exchange, until the relocation of all terminals is completed and the modification of the subscriber number translation table of all exchanges in the packet switching network is completed, the data will be transferred to the existing exchange. Call setup packet addressed to subscriber terminal,
Transfer from the existing switchboard listed in L to the new switchboard, which is a relocated optical switch,
A packet switching center division method characterized in that the call setup packet is transferred to the relocated subscriber terminal in the newly installed switch.