Table of Contents
TSU 120 Overview .............................................................................................. 1
TSU ................................................................................................... 1
TSU 100 ............................................................................................ 2
TSU 120 ............................................................................................ 2
TSU 600 ............................................................................................ 2
Interfaces ....................................................................................................... 6
TSU 120 Interfaces .............................................................................................. 7
Network Interface ........................................................................................ 7
DSX-1 (PBX) Interface ................................................................................. 7
Control Port Input ....................................................................................... 8
Chain Port Output ....................................................................................... 8
Option Ports ........................................................................................................ 9
Other Data Interfaces .................................................................................. 9
Dial Backup .................................................................................................. 9
Front Panel ................................................................................................. 10
ADTRAN PC Program ............................................................................. 10
SNMP .......................................................................................................... 10
Terminal Mode .......................................................................................... 10
TSU 120 Clock Sources ..................................................................................... 11
Network Timed .......................................................................................... 11
DSX-1 Timed .............................................................................................. 12
DTE Timed ................................................................................................. 13
Internal Timing .......................................................................................... 14
Normal (CSU) Timing ............................................................................... 15
TSU 120 Testing ................................................................................................. 16
Self Tests ..................................................................................................... 16
Loopback Tests .......................................................................................... 16
61200.129L1-1
TSU 120 User Manual
Table of Contents
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