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Method for realizing high-speed facsimile service in communication network

A high-speed fax and communication network technology, applied in the field of high-speed fax services, can solve the problems of weak network damage resistance, unsatisfactory high-speed fax services, and unstable high-speed fax services, so as to ensure reliable transmission, improve success rate and stability sexual effect

Inactive Publication Date: 2006-03-01
HUAWEI TECH CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The disadvantage of this implementation scheme is obvious. The transparent transmission method is relatively weak against network damage. In the case of poor network conditions, it is likely to lead to instability of high-speed fax services. This is a problem for many telecom operators and users. It is completely unacceptable, especially in the case of the increasingly widespread use of high-speed fax services, if the transmission of high-speed fax services is still carried out in the transparent transmission mode, more users will be dissatisfied with the high-speed fax services provided by telecom operators

Method used

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  • Method for realizing high-speed facsimile service in communication network
  • Method for realizing high-speed facsimile service in communication network
  • Method for realizing high-speed facsimile service in communication network

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Embodiment Construction

[0038] The core idea of ​​the present invention is to guide the fax machines of both parties to enter the ordinary fax process by adjusting the capability negotiation process of the high-speed fax machines, so as to ensure that the high-speed fax services can be transmitted in the network through the T.38 mode, and improve the reliability of the high-speed fax service transmission.

[0039] In order to realize the present invention, it is first necessary to understand the current negotiation process for developing high-speed fax services.

[0040] According to the definition in Appendix F of the ITU-T T.30 protocol, a normal high-speed fax service negotiation process is as follows: figure 1 shown, including:

[0041] Step 11: After the facsimile machine of the high-speed fax sender enters the fax state, it starts to send CNG to the high-speed fax receiver (indication signal sent by the fax machine of the sender);

[0042] Step 12: After the fax machine of the high-speed fax r...

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Abstract

A method for realizing high speed fax service in communication network includes revising signal to be normal fax service signal i.e deleting ANSam or / ANSam signal , revising high speed capability indication mark to be invalid to let high speed fax sending party enable only to enter normal fax flow process for sending out fax to be sent by only applying normal flow process when high speed fax service signal of ANSam or / ANSam or DIS from high speed fax receiving party is received by gateway in communication network .

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a method for realizing high-speed facsimile service in a communication network. Background technique [0002] The 21st century will be a century of continuous and rapid development of the information industry, and mankind has entered the era of network economy. The rapid development of network technology makes it possible and a reality to use packet technology to transmit multimedia. The integration trend of traditional communication technology and packet technology is becoming more and more obvious. Since the encoding methods of media streams transmitted in traditional communication networks and modern packet communication networks are different, codecs are required to encode media streams at the junction of traditional networks and packet networks. The conversion of the mode, the device that realizes this conversion is called the gateway in the communication netw...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/54H04L12/66H04L29/06
CPCH04N1/32614H04N1/32683
Inventor 靳彤
Owner HUAWEI TECH CO LTD