Digit cell-phone telecommunication terminal system

Abstract

The system consists of terminal in PHS host machine with PHS base station module, and PHS handset terminal with PHS dual-frequency handset module. It caní»t only be used as handset terminal of cordless telephone, but can also be used as the handset terminal of public PHS wireless communication system.

Description

technical field [0001] The present invention relates to a cordless telephone terminal, in particular to a digital cordless telephone communication terminal system which adopts PHS time division multiple access / time division duplex (TDMA / TDD) technology and has dual-frequency cordless telephone handsets. Background technique [0002] With the continuous development of communication technology, a huge fixed-line telephone network composed of program-controlled switches, optical fiber communication transmission network and communication support network has been formed. China's fixed-line telephone network has completed the transformation of program-controlled, digital, intelligent and comprehensive. According to the statistics of the information industry, as of July 2004, there were 298.99 million fixed telephone users in China, and the fixed telephone penetration rate was 23.7%. The fixed telephone has become the main communication tool for enterprises, institutions and familie...

AI Technical Summary

Problems solved by technology

[0004] The currently used cordless telephone terminals are convenient and free to use, freeing users from the shackles of the telephone cord. However, due to the short communication distance and leaving the signal coverage of the cordless telephone host, communication cannot be achieved by the cordless telephone sub-unit terminal.

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