System, device and method for implementing microwave communication on-line public telephone

Abstract

The invention provides a system, a device and a method for implementing a microwave communication on-line public telephone. The system comprises a master control exchange device and a plurality of modulation and demodulation units of node equipment, wherein the master control exchange device is provided with a local voice channel and a plurality of null voice channels, mixes voice data of other voice channels for generating new voice information except the voice channel aiming at each voice channel in the conversation in a certain period of time, packages the mixed voice data of the null voice channels into voice data packets, and transmits the voice data packets to corresponding modulation and demodulation units; and the modulation and demodulation units extract the voice data from the received voice data packets, inserts the voice data into null data frames, modulates the null data frames, and transmits the null data frames to microwave nulls. By the invention, technicians can flexibly carry on point-to-point official duty, multiparty conferencing official duty and cross-point official duty activity.

Description

technical field [0001] The invention relates to microwave communication network service telephone technology, in particular to a system, device and method for realizing microwave communication network service telephone. Background technique [0002] Microwave communication technology has been around for more than half a century. It refers to the way of relaying (relay) communication between line-of-sight through radio wave space by using microwave frequency as the carrier to carry information. Currently, digital microwave communication, optical fiber and satellite are called the three pillars of modern communication transmission. [0003] Digital microwave communication equipment can be divided into small-capacity point-to-point equipment and medium- and large-capacity node equipment according to the transmission capacity. Traditional point-to-point devices can only transmit user data to one air interface at a line-of-sight distance. However, with the rapid increase of use...

AI Technical Summary

Problems solved by technology

[0013] (1) The point-to-point business phone can only be adapted to the traditional point-to-point microwave network. For today's multi-node microwave equipment, it cannot meet the needs of supporting multiple directions, so it cannot meet the needs of multi-party calls;

[0014] (2) Although the business phone between the cross-node devices can meet the call from the node device to any node device in the network, it needs to add a DTMF dialing module, which not only increases the hardware cost, but also the software implementation of the CPU monitoring unit is more complicated, and at the same time The use of Field Programmable Gate Array (FPGA, Field Programmable Gate Array) logic to extract, retransmit, and perform multiple decomposition of the voice business data transmitted over the air interface brings certain troubles;

[0015] (3) The business calls between point-to-point node devices or cross-node devices cannot meet the needs of multi-node business calls in modern microwave communication networks

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