Implementation method for improving circuit quality of Integrated Services Digital Network (ISDN)

Abstract

The invention discloses an implementation method for improving the circuit quality of an Integrated Services Digital Network (ISDN). One side of the ISDN is provided with a special signal channel B for sending an error correcting code; a system comprises two calling sides, including a calling terminal and a called terminal, and the two calling sides establish the special signal channel B for sending an the error correcting code; the calling terminal makes H.211 protocol data into a data packet and configures adaptive error correcting code for the data packet; and the calling terminal sends the data packet to the called terminal. The system and the implementation method provided by the invention arrange the special signal channel B for sending the error correcting code on one side of the ISDN network to reduce burst bit errors and slip codes and changes a frame format of the data into a packet format to enhance the stability and the safety of data transmission; and in particular, the implementation method combines the strict data transmission format with an error-correcting technology, so that the transmission quality of the ISDN network circuit is improved greatly.

Description

technical field [0001] The invention relates to the field of ISDN video conference, in particular to a method for realizing audio and video transmission by ISDN video conference. Background technique [0002] Since the development of traditional communication networks is driven by business needs, network systems such as telephone networks, telegraph networks, and data communication networks are independent of each other and business operation mechanisms are also different. It becomes very complicated and wastes a lot of resources; for users, the business application procedures are complicated, the network is inconvenient to use, and the cost of use remains high; at the same time, for the development of the entire communication system, this heterogeneous system has great influence on the future development of communication. Very poor adaptability. On this basis, the ISDN network (Integrated Services Digital Network: Integrated Services Digital Network) is proposed. The ISDN ...

AI Technical Summary

Problems solved by technology

[0004] At present, when ISDN network lines are applied to video conferencing systems, many lines have problems of poor transmission quality, which leads to frequent disconnection of conferences, and even failure to establish conference connections; in the prior art, the transmission quality of ISDN lines The main reason for the poor performance is that there are a large number of burst errors and code slips

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