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Chapter 1
Introduction
Chapter contents
Model 3120 Remote Access Server overview..........................................................................................................12
Hardware overview................................................................................................................................................13
WAN ..............................................................................................................................................................13
LAN ...............................................................................................................................................................13
Signaling .........................................................................................................................................................14
Modems ..........................................................................................................................................................14
RS-232 control port ........................................................................................................................................14
Power system ..................................................................................................................................................14
Central processing unit ...................................................................................................................................14
Temperature ...................................................................................................................................................14
Altitude ...........................................................................................................................................................14
Humidity ........................................................................................................................................................14
Physical dimensions ........................................................................................................................................15
Security ...........................................................................................................................................................15
Management services ......................................................................................................................................15
LED display ....................................................................................................................................................16
Approvals ..............................................................................................................................................................17
Software overview..................................................................................................................................................18