ADTRAN Total Access 5000 Deployment Guide

Total Access 5000 Business Services Deployment Guide
G-2 65K510DEP08-1A
Loopback Definition
AloopbackandBitErrorRateTest(BERT)providetheabilitytoinsertaknowntrafficpattern
andverifytheerror‐freeperformanceofthecircuitatgivenpointsinthesystem.
Line Loopback
Alineloopback(seeFigureG‐1)loopsallofthereceiveddatabacktowardthenetwork(DS3
payloadandDS3data).Thetransmitteddataistheidenticaldatathatisreceivedandisnot
reframedorregenerated.ThistestsrightuptotheDS3interfaceofthemodule.
Theline
loopbackcanbelocaltotheaccessmodule.
Figure G-1. Line Loopback Diagram
Payload Loopback
Apayloadloopback(seeFigureG‐2)performsthesamefunctionalityasthelineloopback,
exceptthepayloadloopbacksendsthereceiveddatathroughtheframer,whereitisreframed
andregenerated,priortobeingtransmittedbackouttowardsthenetwork.Thistestalso
verifiestheinternalhardwareofthe
module.
Thepayloadloopbackislocallyinitiated.
NOTE
TheDS3doesnotsupportapayloadloopback.
DS3 Interface
Framer
Line Loopback
DS-3 Facility

ADTRAN Total Access 5000 Specifications

Interfaces

craft interface	DB-9 RS-232 Electrical Interface (Async)
admin interface	DB-9 RS-232 DTE Electrical Interface (Async with Modem Control Signals)
network management port	DB-9 RS-232 DTE Electrical Interface (Async)
ethernet interface	10Bt
external alarm inputs	16

Operating Environment

operating temperature	-40°C to +65°C
storage temperature	-40°C to +70°C
relative humidity	Up to 95%, non-condensing

Weight and Dimensions

height	9.25 in.
width	0.08 in.
depth	9.5 in.
weight	0.6 lbs.