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Method for transferring ECC information through external clock interface of SDH equipment

A technology of SDH equipment and clock interface, which is applied in the direction of data exchange, transmission system, and digital transmission system through path configuration. And the effect of improving maintainability, reducing equipment investment cost, and high reliability

Inactive Publication Date: 2005-08-17
UTSTARCOM TELECOM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Compared with the technical solution using a router, the equipment used for dial-up Internet access is a cheap MODEM. Although the cost of equipment investment is greatly reduced, the public telephone network does not support permanent connection in essence, so the connection between each subnet and the network management will be slow. Frequent interruptions, and then re-dial to establish a connection, the reliability of the entire management network will be very low

Method used

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  • Method for transferring ECC information through external clock interface of SDH equipment
  • Method for transferring ECC information through external clock interface of SDH equipment
  • Method for transferring ECC information through external clock interface of SDH equipment

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Embodiment Construction

[0037] The external clock interface of SDH equipment is generally used to connect the core clock equipment (BITS) of the synchronization network construction or other higher-level clock sources, so that the SDH equipment can obtain good synchronization performance. Generally, only one site in the network needs to track BITS or other high-level external clock sources, and other sites in the network directly recover clocks from optical fiber signals and track clocks. Therefore, the external clock interfaces of these sites can be used to solve ECC problems. Interconnection issues.

[0038]In the present invention, the external clock interface of the SDH equipment is used to transmit the ECC information, so that the ECC information can pass through the network formed by the SDH equipment of other equipment manufacturers, or the ECC information of the SDH equipment of other equipment manufacturers can pass through the network. The network composed of its own equipment provides supp...

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Abstract

This invention discloses a method for transferring ECC information by foreign interfaces of SDH device among which, the SDH device sends the overhead extracted from the light interface and ECC information sent by CPU system to a foreign clock interface via overhead nexus overlap matrix to be converted to a standard EI format as the service signal passing through the network made up of other manufacture light transmission equipments, or its own light transmission equipments.

Description

technical field [0001] The invention relates to the technical field of optical synchronous digital transmission, in particular to a method for transmitting embedded control channel (ECC) information using an external clock interface of a synchronous digital transmission system (SDH). Background technique [0002] According to the relevant recommendations of ITU-T, when designing SDH equipment, telecom equipment manufacturers use D1-D12 overhead bytes to directly transmit ECC information on the physical link, but because there is no unified standard for the upper layer communication protocol, each Manufacturers of telecommunication equipment all adopt proprietary communication protocols, which cannot support mutual interconnection. Therefore, in the transmission network jointly constructed by multiple equipment manufacturers, there is a problem of interconnection and interoperability in the network management of telecom operators. [0003] figure 1 It shows a network in the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/24H04L12/28H04Q3/00H04Q3/52
Inventor 张信
Owner UTSTARCOM TELECOM CO LTD