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Trunked radio system

A technology for frequency sharing and data control, applied in transmission systems, automatic switching offices, telephone communications, etc., and can solve the problems of increasing the number of TRS switches and repeaters, transmission speed limitations, and rising costs.

Inactive Publication Date: 2004-05-19
LG NORTEL CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] However, this existing TRS system has the problem of degrading the call quality due to the generation of noise and missed calls due to the use of analog communication lines for transmission.
[0015] In addition, there is a disadvantage that as the number of channels increases, a new call line must be connected so that the number of lines connected between the TRS exchange and the repeater increases.
[0016] There is another disadvantage: since the control data is transmitted through the serial input and output port, the transmission speed is limited
In the case of long-distance transmission, additional equipment such as data service units or modems need to be added, thereby increasing the cost

Method used

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Embodiment Construction

[0026] The sound and control data sending and receiving device of the TRS system of the present invention, such as figure 2 As shown, it consists of a TRS switch (100), a relay machine (200) and a terminal machine (300).

[0027] Above-mentioned TRS exchange (100) is made of office line connection part (101), call line switch part (102), sound and control data connection part (103), control data processing part (104) and main control part (105).

[0028] Above-mentioned repeater (200) is made up of main control part (201), sound and data connection part (202), control data processing part (203), call line switch part (204), channel control part (205) and high-frequency processing Part (206) constitutes.

[0029] The office line connection part (101) can be connected between the office line and the analog trunk line and the digital trunk line and the office line, and the call switch part (102) has a switching capacitor with 512 timeslots (512*512).

[0030] In addition, the ...

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PUM

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Abstract

A TS system is included, the present invention provides a TRS system including a TRS switch (100), which comprises a local line connection device connected by local line and simulation main line and digital main line, a communication line switching device for switching communication line, a sound and control data connecting device for connecting sound and control data, a control data processing device for processing above control data, a main control device for controlling communication line by control data processed by said control data processing device.

Description

technical field [0001] The present invention relates to frequency sharing (TRS), and in particular to a sound and control data transmitting and receiving device for a TRS system that has been made suitable for excellent call quality, ease of channel expansion, correct transmission of control data and improved transmission speed . Background technique [0002] US Patent No. 5,533,098, issued July 2, 1996, entitled "Wide Area Network Repeated Radio System for Controlling Signal Level or Specific Wireless Audio Channels in a Local Area Network Repeated Radio System," is incorporated herein by reference. [0003] Existing TRS systems such as figure 1 Shown, by TRS switchboard (10), connect with above-mentioned TRS switchboard (10) through the call line and connect with above-mentioned TRS switchboard (10) by data service unit (Data ServiceUnit: DSU) or modem (40,50) at the same time Follower (20) and terminal (30) constitute. [0004] Above-mentioned TRS exchange (10) is made...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/26H04M3/00
CPCH04B1/38H04W84/08
Inventor 崔相准
Owner LG NORTEL CO