Verilink DIU 2130 (880-503297-001) Product Manual - Manual (Page 8)

viii Verilink DIU 2130
Near Loop ............................................................................................. 3-14
Monitor Leads ....................................................................................... 3-14
Far Loop ................................................................................................ 3-14
Alarm Enable ........................................................................................ 3-15
DIU Bus ................................................................................................. 3-15
DIU Clock .............................................................................................. 3-16
Troubleshooting ..................................................................................................... 4-1
Near End Loop LED ................................................................................. 4-1
Far End Loop LED .................................................................................... 4-1
STAT LED ................................................................................................ 4-1
Loss of Clock Alarm Notification ................................................ 4-2
Loss of Signal Alarm Notification ................................................ 4-2
Test Signal Detector .................................................................... 4-2
Data Channel Loopbacks ............................................................. 4-2
V.54 Data Channel Loopbacks ..................................................... 4-3
Interpreting Alarms ......................................................................................... 4-3
Status Code ............................................................................................. 4-4
Alarm Description .................................................................................. 4-4
Classifications ........................................................................................ 4-4
Problem Types ........................................................................................ 4-4
What To Do About Alarms ............................................................................... 4-5
Alarm Records ........................................................................................ 4-5
T1 Dial Backup Option Overview ........................................................................... 5-1
Features .................................................................................................. 5-2
Available configurations ........................................................................ 5-2
Compatibility and requirements ............................................................ 5-2
How dial backup works .......................................................................... 5-3
Upgrading to the T1 Dial Backup Option ......................................................... 5-4
Preconfigured Option ............................................................................. 5-4
Download Upgrade ................................................................................. 5-4
EPROM Upgrade ...................................................................................... 5-4
Installation and Management .......................................................................... 5-5
Connecting Cables for Dial Backup ........................................................ 5-6
Detecting a DIU 2130/DBU ..................................................................... 5-7
Configuring Modes for Dial Backup ................................................................. 5-8
Monitoring Dial Backup Status ........................................................................ 5-9
Managing Alarms and Testing ....................................................................... 5-10
Managing Dial Backup Alarms .............................................................. 5-10
Manually Controlling Dial Backup ........................................................ 5-11
Testing Before or After a T1 Circuit Failure ......................................... 5-11
Configuring the ConnecT 56K DSU for Dial Backup ...................................... 5-12
56K NMS Option Overview ..................................................................................... 6-1
Application Example ............................................................................... 6-1
Features .................................................................................................. 6-2
Status/Control Codes .................................................................. 6-2
Alarms ......................................................................................... 6-3
Loopback Codes .......................................................................... 6-3
Available DIU 2130/DDS Configurations ................................................ 6-3
Compatibility and Requirements ............................................................ 6-4
Upgrading to the 56K NMS Option ................................................................... 6-4
Preconfigured Option ............................................................................. 6-4