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Method for controlling bandwidth of link

A technology of link bandwidth and control method, applied in the field of communication, can solve the problems such as the inability of the remote switching module to contact the central office and the slow startup time

Inactive Publication Date: 2006-12-06
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] The disadvantage of this method is that every time the bandwidth is modified, the entire remote switch module needs to be reset, which makes the startup time slow.
And if there is a problem in the startup process, the remote switching module will not be able to contact the central office all the time.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0045] A link bandwidth control method of the present invention will be further described in detail below.

[0046] In the present invention, the Sa bit is used for signaling communication on the central office switch and the remote switching module, and Sa4-Sa8 only need to use any combination or single bit among them for signaling.

[0047] In the signaling communication of this embodiment, the signaling is transmitted through the E1 line, and it uses Sa4 and Sa5 as the signaling communication. Its forward definition at the central office is as shown in Table 2, and its backward definition at the far-end switching module is as follows As shown in Table 3, Sa6, Sa7, and Sa8 are usually set to fixed bits, such as 111.

[0048] Sa4Sa5

the meaning

10

idle, sync up

00

occupy

11

Fault

00 / 01 Pulse

The number of pulses is equal to the 64K signal used

Order the number of time slots.

01

The ...

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PUM

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Abstract

The method comprises: on the exchange of office end and the switch module of remote end, the Sa bits in E1 send frame is used as the signaling negotiation used to control link bandwidth; the Sa bits in frame are Sa4 and Sa5 bits, and the Sa6, Sa7 and Sa8 bits are used as the bandwidth indication bits so as either to ensure the communication between the switch module of the remote end and the exchange of the office end or to take the operations of basic maintains instruction through same link.

Description

technical field [0001] The invention relates to the communication field, in particular to a communication link bandwidth control method. Background technique [0002] In the communication network formed by the remote switching module (Remote Switch Module, RSM), the remote switching module and the central office transmit data according to the E1 standard through the HDLC link protocol. [0003] The central office refers to the switch with switching call control function. The remote switching module does not have the switching function, but simply converges the subscriber line. [0004] HDLC link protocol refers to the underlying protocol of HDLC, including the following functions: 0-bit insertion and deletion, CRC calculation. At present, HDLC is used for frame processing on layer 2 links. Other protocols are used in layer 2 signaling (PRA, Mtp2, V5 etc.) on the transmission. [0005] E1 refers to a wide-area digital transmission scheme mainly used in Europe, which transm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04M7/00
Inventor 李琥
Owner HUAWEI TECH CO LTD