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Next Generation
Signal Enhancement
4. Introduction
4.1. Purpose
The purpose of this document is to describe the electrical and mechanical
specifications, operation and maintenance of the DB6MR20 Repeater.
4.2. Scope
This document is the product description of the Shyam DB6MR20 Repeater
for indoor applications.
4.3. Definitions
AGC
Automatic Gain Control
ALC
Automatic Level Control
APC
Automatic Power Control
BCCH
Broadcast Control Channel
BTS
Base Transceiver Station
BSEL
Band Selective
CDMA
Coded Division Multiple Access
CMC
Configuration & Monitoring Console software
CMB
Combiner Unit
CSEL
Channel Selective
DCS
Digital Communication System
DL
Downlink signal (from base station via repeater to
mobile station)
EGSM
Extended Global System for Mobile Communication
ETSI
European Telecommunications Standard Institute
GSM
Global System for Mobile communication
LAC
Location Area Code of the BTS site
LED
Light Emitting Diode
LNA
Low Noise Amplifier
LO
Local Oscillator
MS
Mobile Station
MSC
Mobile Switching Center
NMS
Network Management System
PA
Power Amplifier
PCN
Personal Communication Network
PCS
Personal Communication System
PSU
Power Supply Unit
RF
Radio Frequency
RMS
Remote Management System
RSSI
Received Signal Strength Indication
RTC
Real Time Clock
TACS
Total Access Communication System
TDMA
Time Division Multiple Access
UL (Uplink)
Uplink signal direction (from mobile station via
repeater to base station)
