Unlock instant, AI-driven research and patent intelligence for your innovation.

Fax mode negotiating method between gateways for network telephone call

A technology between Internet phone and gateway, which is applied in the field of VoIP communication, can solve problems such as fax failure, achieve wide compatibility, avoid fax failure, and make small changes

Inactive Publication Date: 2010-06-09
ZTE CORP
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the default fax methods of the communication parties are inconsistent, the fax will fail

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Fax mode negotiating method between gateways for network telephone call
  • Fax mode negotiating method between gateways for network telephone call
  • Fax mode negotiating method between gateways for network telephone call

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] The present invention proposes a method for negotiating the fax mode between network telephone gateways, so that the VoIP gateway that realizes the NTE mode can ensure that the fax modes of the two fax parties are consistent in the non-full control mode, thereby avoiding the fax failure caused by the inconsistency of the fax modes of the two fax parties . The basic idea is: the side that detects the fax signal tone first sends a data packet to inform the other end to switch the fax, and the data packet includes the fax mode identification bit determined according to the default fax mode of the local end; After receiving the data packet, corresponding fax switching is performed according to the fax mode identification bit therein, so that the fax sending and receiving parties switch to a consistent fax mode.

[0031] Specific embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0032] Such as fi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A fax mode consultation method between network telephone network gateways resolves the inconsistent fax modes of two fax users of a network telephone VoIP network gateway of naming telephone event NTEat a non-full control method. The method comprises that: the network gateway of one of two fax users first checking a fax signal sound sends a data packet to the other one, wherein the data packet contains the information indicating the opposite user to switch fax mode; the opposite user receives and analyzes the data packet, and switches to the fax mode according to the information indicating the switch of fax modes contained in the data packet. The method can effectively confirm the consistent fax mode between the network gateways of two fax users, to avoid the fax from failure caused by the inconsistent fax modes of two fax users, to confirm the fax success rate most.

Description

technical field [0001] The invention relates to the technical field of VoIP (Voice over IP, network telephone) communication, and in particular to a method for negotiating a fax mode between VoIP gateways. Background technique [0002] There are two main modes of fax transmission in the IP network, one is VBD (Voice Band Data, voice band data) mode, and the other is T38-based FoIP (Fax over IP, network fax) mode. The packaging methods of the two methods are completely different. The gateways of both communication parties must use a unified fax method to succeed, so the fax method needs to be negotiated between the gateways. [0003] The VBD mode refers to the transmission of voiceband data information (such as Modem, Fax, etc.) on the voice channel in the transparent transmission mode in the IP network, and generally adopts G.711 encoding. Different from ordinary voice transmission, Fax in VBD mode needs to turn off VAD (Voice Activity Detection, voice activity detection), ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04N1/00H04N1/32H04M7/00H04L29/06
Inventor 夏薇宋高勇汪涛王志伟
Owner ZTE CORP