Facsimile method and facsimile device

Abstract

The invention discloses a fax method, which mainly comprises: receiving an inband signaling; detecting the type of the inband signaling; if the inband signaling is detected to be a signal to start the fax, switching a business transmission channel to a fax business channel from a voice business channel; transmitting fax data signal through the fax business channel and maintaining the state when the voice business channel is established. The fax method of the invention can fast switch to a voice business after a fax business is over, thus improving business experience of a user.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a facsimile method and a facsimile device. Background technique [0002] In today's society, the fax service, as a traditional effective way to transmit files, is widely used by users such as companies, enterprises, and government agencies. The traditional PSTN (Public Switched Telephone Network) network implements VBD (Voice Band Data, voice in-band data) service transmission through the establishment of calling and called voice service channels, and through capability negotiation between terminals. Fax service is a kind of VBD service. [0003] Existing fax methods include direct fax and voice first followed by fax. The direct fax method is implemented through a special dialing method. For example, the caller adds a special prefix code before dialing to trigger the fax service, but direct faxing is not very convenient to use. Voice first and then fax mode is to...

AI Technical Summary

Problems solved by technology

[0007] The inventor found in the process of implementing the present invention that in the prior art, when the call or fax is transmitted on the data network, if the quality of service cannot meet the requirements, the call or fax is switched to the PSTN network. Therefore, the prior art It can solve the problem of unstable service quality when fax data is transmitted on the data network, and can also reduce the cost of fax. However, when users use the fax method of voice first and then fax, they need to switch between voice and fax many times. In the technology, both fax and voice are transmitted on the same network. When users switch between fax services and voice services, they need to switch between voice service channels and fax service channels. Therefore, they need to re-establish Voice service channels or fax service channels, resulting in delays in voice and fax switching. When the network quality of the data network or PSTN network is degraded, service switching will fail, thereby affecting the user's service experience

If the fax machine needs to go through the wireless air interface to the network, and the transmission quality of the wireless network is worse than that of the wired network, the transmission of fax and voice through the same transmission channel will lead to a higher success rate of voice service and fax service switching. Low

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