Remote Loopbacks | Paradyne 7924 guide

Testing

Remote Loopbacks

HWhen a remote loopback is enabled, the red Loop Bk LED on the front panel of the remote-end unit (CO or CP) lights up and remains lit until the loopback is disabled. The loopback LED on the initiating unit does not light.

HA message appears on the remote-end unit reporting that it has been put into loopback.

HThe data flow is indicated by the bold thick arrows in Figures 7-3and 7-4.

HWhen the CO initiates a remote loopback, an Alarm Indication Signal (AIS) is received at the CP end (only if the CP end is G.703-compatible). (AIS is not received at V.35-compatible CP units.)

CO	CP	AIS
		AIS

Diagnostic

Equipment

Loop Bk

LED lights

Diagnostic Equipment

AIS = Alarm Indication Signal

Terminal

97-15515-01

Figure 7-3. Remote Loopback, Initiated at the CO Unit

CO	CP
Diagnostic	Diagnostic
Equipment	Equipment
	Loop Bk
	LED lights

Terminal97-15517-01

Figure 7-4. Remote Loopback, Initiated at the CP Unit

7924-A2-GB20-30

October 1997

7-3

Image 39

Paradyne 7924 manual Remote Loopbacks, Remote Loopback, Initiated at the CO Unit

Contents

Model 7924 Standalone T1 Hdsl Termination Unit Warranty, Sales, and Service Information Copyright 1997 Paradyne Corporation All rights reservedTrademarks Important Safety Instructions EMI Warnings Contents Customizing V.35-Compatible Units Iii Cable Pin Assignments About This Guide Document Purpose and Intended AudienceDocument Summary Document Number Document Title Product-Related Documents HotWire 7924-A1 Models and Features About HotWire Model Termination Units Model Number Features Campus Network Applications Typical Configurations DCS User Interface Types Cellular Network Access Installing the Unit Package Checklist for HotWire Model 7924-A1Overview DSX-1-Compatible HotWire 7924 ± Rear Panel Connecting to the NetworkConnecting Power to the Unit Procedure Using Terminal and Switchpack Modes Choosing an Interface ModeConnecting to a System Terminal Switching Between Terminal and Switchpack Modes Customizing DSX-1-Compatible Units Accessing Configuration Options Making Changes from the Terminal Interface Hdsl Card Type DSX-1-Compatible Units Configuration Options 1 DSX-1-Compatible Units Configuration Options 2 Displaying Switchpack Definitions Making Changes in Switchpack Mode Displaying Line Build-Out Definitions Switchpack Settings for Line Build OUT Customizing V.35-Compatible Units Customizing V.35-Compatible Units ± 6 x 64 384 kbps ± No change to rate V.35-Compatible Units Configuration Options Making Changes in Switchpack Mode CO/CP OFF=CP, ON=CO What to Monitor Monitoring the Unit Board Status Board Status for DSX-1-Compatible UnitBoard Status for V.35-Compatible Unit Performance Statistics Performance Statistics for V.35-Compatible Unit Performance Statistics for DSX-1-Compatible Unit Remote Unit Information Front Panel LEDs DSX-1-Compatible UnitMeaning Compatible Unit Testing Detecting a ProblemUnderstanding Loopback Tests Local Loopback, Initiated at the CO Unit Local Loopbacks Remote Loopback, Initiated at the CO Unit Remote Loopbacks Starting and Stopping Loopbacks Resetting the Unit Worksheets DSX-1-to-DSX-1 Configuration LAN DSX-1-to-V.35 Configuration Unframed Operation Time Slot DS0 AssignmentsPayload Rate DSX-1 T1 DS0s Used Compatible Units Configuration Worksheet DSX-1-Compatible Units Configuration Worksheet Terminal Connection Cable Pin Assignments Cable Pin Assignments Pin Hdsl Loop Connection Cable Pin Assignments T1 Network Connection Cable Pin Assignments Connection Cable Pin Assignments Direction Code Pin NameFunction Description Switchpacks and Jumpers Jumper Pins Factory-SettingDSX-1-Compatible Units Switchpacks and Jumpers Compatible Units Jumper P8 COM port Factory defaultsGlossary GL-1 Reset GL-2Loopback IN-1 Index Index IN-2