Device and method for realizing the G3 fax via the CDMA network

Abstract

The invention provides a device and method for implementing G3 faxes through CDMA network. And the device comprises CDMA module, fax modem interface circuit, and user interface circuit, where when sending a fax, the user interface circuit receives analog fax data, the fax modem interface circuit converts the analog fax data into digital fax data, and the CDMA module converts the digital fax data into fax data of CDMA data link protocol format. And the invention uses common G3 electrograph to implement fax data transmission and receipt through the CDMA network, and breaks away from limitation of PSTN network.

Description

technical field [0001] The invention belongs to the technical field of devices and methods for sending / receiving fax data, and in particular relates to a device and method for transmitting fax data by a common analog G3 fax machine through a CDMA network. Background technique [0002] With the development of wireless communication technology and the increasingly perfect construction of digital cellular mobile communication network, the traditional wired fax service based on the public switched telephone network (PSTN) gradually develops into the wireless fax service based on digital mobile communication network, which is widely used in many special occasions , such as mobile locations (trains), public places (railway stations), temporary workplaces (construction sites), mountainous areas, and modern fixed or mobile offices. The convenience of wireless fax is that it is not bound by traditional wired telephone cables, which is a great advantage of it and one of the reasons fo...

AI Technical Summary

Problems solved by technology

[0004] Currently, there is a PC facsimile technology that realizes G3 facsimile transmission in a CDMA cellular network, and can provide reliable facsimile services in a CDMA mobile communication system by using a general-purpose computer network environment with access to the Internet (Internet). The solution depends on the computer network environment, and the interface between the analog fax machine and the CDMA network and the fax service cannot be realized

[0005] In addition, there are some fax technologies, such as devices for sending / receiving fax data in wireless local loop systems, etc., but most of these devices are mainly composed of CPU and two modems, the structure is relatively complicated, and technical implementation is difficult , the cost is relatively high, and no solution is proposed for how to ensure the processing of the G3 fax protocol with high real-time requirements in a CDMA network with a large communication delay

These problems greatly affect the reliability of the G3 fax service in the CDMA network and the compatibility of network equipment of different operators

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