JP3322914B2 - 4 kbps maintenance data control method for multiple primary transmission lines - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a maintenance data control method, and more particularly to a 4 kbps maintenance data control method for a plurality of primary transmission lines.

[0002]

2. Description of the Related Art Conventionally, 4 kbps of a plurality of primary group transmission lines
According to the maintenance data control method, as shown in FIG.
Only 0 could be controlled. Here, when the exchange 10 communicates with the opposing device 40 through the primary transmission line 30, the primary group control unit 50 is installed on the exchange 10 side, and
The channel is controlled by the B channel control unit 51, the D channel is controlled by the D channel control unit 52, and the m-bit data, that is, the maintenance data, is controlled by the maintenance data control unit 53. The insertion / extraction unit 55 inserts / extracts B-channel data between the B-channel control unit 51 and the primary group transmission line 30, and performs D-channel communication between the D-channel control unit 52 and the primary group transmission line 30. The data insertion / extraction is performed by the maintenance data control unit 53 and the primary transmission line 3
The insertion / extraction of m-bit data between 0 and 0 is performed. The primary group interface unit 56 is an interface unit with the primary group transmission line 30.

[0003]

In this conventional 4 kbps maintenance data control system for a plurality of primary transmission lines, one primary group control section controls one opposing device via a single primary transmission line. Only 4 kbps maintenance data could be communicated. For this reason, in order to communicate 4 kbps maintenance data with a plurality of opposing devices, it is necessary to provide a plurality of primary group control units, which increases the scale of hardware.

[0004]

According to the present invention, a 4 kbps maintenance data control method for a plurality of primary group transmission lines is provided for communicating with a plurality of opposing devices via a plurality of primary group transmission lines each having a different line number. in the transmission apparatus for performing 4kbps maintenance data communication between the maintenance data controller that Gyosu braking together with the line number corresponding maintenance data for each each of the plurality of opposing device, before received from the maintenance data controller < br /> Symbol the main maintenance data of a plurality of opposing device addressed
The data is separated according to the line number received together with the maintenance data and transmitted to the corresponding primary group transmission line, and the maintenance data received from the plurality of opposing devices is multiplexed with the corresponding line number of the primary group transmission line. A multiplexing / demultiplexing unit for sending the data to the maintenance data control unit.

In the above configuration, the multiplexing / demultiplexing is performed.
B for controlling B channel data input / output to / from the unit
Input / output between the channel control unit and the multiplexing / demultiplexing unit
A D channel control unit for controlling D channel data to be transmitted;
Each of the plurality of primary transmission lines is accommodated via an interface unit, and a B channel input from the multiplexing / demultiplexing unit is received.
Data, D-channel data, and maintenance data
Multiplexed data and inserted into the primary group transmission path,
B-channel data, D-channel data,
A plurality of insertion / extraction sections for extracting maintenance data and outputting the extracted data to the multiplexing / demultiplexing section , wherein the multiplexing / demultiplexing section includes B channel data and D data together with the maintenance data.
Multiplexing and demultiplexing of channel data corresponding to the line number may be performed .

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention. When the exchange 10 communicates with the plurality of opposing devices (exchanges) 40 through the plurality of primary transmission lines 30, the primary group control unit 20 is provided on the exchange 10 side and includes a B channel control unit 21 that controls the B channel. D controlling the D channel
A channel control unit 22, a maintenance data control unit 23 for controlling maintenance data,
An insertion / extraction unit 25 for inserting and extracting channels and m bits (maintenance data) into the primary group transmission path, and a multiplexing / demultiplexing unit 24 for multiplexing and demultiplexing maintenance data.
And a primary group interface unit 26 that interfaces with the primary group transmission path 30.

The operation will be described with reference to FIG. 2 showing the HDLC frame format between the maintenance data control unit and the multiplexing / demultiplexing unit. The maintenance data control unit 23 sends the line number and the maintenance data determined for each of the primary group transmission lines 30 to the multiplexing / demultiplexing unit 24 in the HDLC frame format. The multiplexing / demultiplexing unit 24 sends the maintenance data to the insertion / extraction unit 25 accommodating the primary group transmission line corresponding to the line number. The insertion / extraction unit 25 inserts the maintenance data, B channel data, and D channel data sent from the multiplexing / demultiplexing unit 24 into the primary group transmission path, and transmits the primary group via the primary group interface unit 26. It is sent to the road 30. Thus, the maintenance data is sent to the opposite device 40 corresponding to the line number. In the case of receiving maintenance data from the partner device 40, the primary group interface unit 2
6. The maintenance data received by the multiplexing / demultiplexing unit 24 via the insertion / extraction unit 25 is sent to the maintenance data control unit 23 in the HDLC frame format together with the line number corresponding to the primary transmission line.

[0009]

As described above, according to the present invention, the line number and the maintenance data are transmitted and received between the multiplexing / demultiplexing unit and the maintenance data control unit, and the multiplexing / demultiplexing unit transmits the maintenance data to the transmission path indicated by the line number. Since transmission and reception are performed, one primary group control unit can communicate 4 kbps maintenance data with a plurality of opposing devices via a plurality of primary group transmission lines.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention.

FIG. 2 is a diagram illustrating an HDLC data format between a maintenance data control unit and a multiplexing / demultiplexing unit.

FIG. 3 is a block diagram showing a conventional 4 kbps maintenance data control method for a plurality of primary group transmission lines.

[Description of Signs] 10 switch 20, 50 Primary group control unit 21, 51 B channel control unit 22, 52 D channel control unit 23, 53 Maintenance data control unit 24 Multiplex / separation unit 25, 55 Insertion / extraction unit 26, 56 Primary group interface unit 30 Primary group transmission line 40 Opposing device

Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) H04Q 3/42 H04M 11/00-11/10 H04Q 11/00-11/08

Claims (2)

(57) [Claims] 1. A 4 kbp communication with a plurality of opposing devices via a plurality of primary transmission lines each having a different line number.
In the transmission apparatus that performs s maintenance data communication, said and maintenance data controller that Gyosu braking with the line number, the plurality of counter received from the maintenance data control unit to the corresponding maintenance data for each each of said plurality of counter device The maintenance data destined for the device is separated according to the line number received together with the maintenance data and is transmitted to the corresponding primary group transmission path, and the maintenance data received from the plurality of opposed devices is corresponding to the maintenance data. a plurality of 1 Tsugigun transmission path 4kbps maintenance Manual data control method, characterized in that it comprises a multiplexing / demultiplexing unit to be sent to multiplexing the maintenance data controller with 1 Tsugigun transmission path line number. 2. A and B channel control unit for controlling the B channel data input and output to and from the multiplexing / separating unit, wherein
A D-channel control unit for controlling D-channel data input / output to / from a multiplexing / demultiplexing unit;
Each were housed through the interface unit, the multiplex /
B channel data and D channel data input from the separation unit
Data and maintenance data, and multiplexes the primary
B channel data from the primary transmission path.
Data, D-channel data, and maintenance data
And a plurality of insertion / extraction sections for outputting to the multiplexing / demultiplexing section, wherein the multiplexing / demultiplexing section performs multiplexing / demultiplexing of the B channel data and the D channel data together with the maintenance data in accordance with the line number. The 4 kbps maintenance data control method for a plurality of primary group transmission lines according to claim 1.