ADTRAN Total Access 5000 Deployment Guide

Appendix G, BSM DS3/DS1 Layer 1 Tests - Remote Loopback
65K510DEP08-1A G-3
Figure G-2. Payload Loopback Diagram
Remote Loopback
Aremoteloopback (seeFigureG‐3)transmitsaFarEndLoop‐upcodeviatheFEACchannelin
theDS3moduletothecustomerequipment,whichrespondsbysetting‐upalineloopback
towardstheDS3cardintheTotalAccess5000.AfterthecustomerequipmentDS3portis
looped‐
up,BERTpatternscanbesentfromtheDS3cardtotesttheintegrityoftheDS3circuit.
NOTE
DS3BERTpatternscanbesentfromexternaltestequipment.Forexample,
theintegratedBERTintheDS3EFMmodule.
TheRemoteLoopbackrequestonlyworksintheC‐Bitframingmode.
Figure G-3. Remote Loopback Diagram
DS3 Test Configuration
Thissectiondetailsthefollowinginformation:
•Remoteloopbackconfiguration
•Testadministrativefunctions
•Locallineloopbackconfiguration
•BERTtestconfiguration
DS-3 Facility
DS3 Interface
Framer
Payload Loopback
Remote Loopback
DS-3 Facility
NetVanta 873
Framer
DS-3 Facility
Total Access 5000
Framer

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.