ADTRAN 1200060L1, Руководство пользователя

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61200060L1-1 TSU User Manual ix
Table of Contents
Chapter 1. Introduction .......................................................................................... 1-1
T1/FT1 Overview ..................................................................................................... 1-1
T1 Service Offerings........................................................................................... 1-1
Fractional T1........................................................................................................ 1-2
TSU Overview ........................................................................................................... 1-3
Functional Description ...................................................................................... 1-3
Features ....................................................................................................... 1-5
Interfaces ..................................................................................................... 1-5
Network Interface .............................................................................................. 1-6
NI .................................................................................................................. 1-6
Nx56/64 Serial Interface ........................................................................... 1-6
Control Port Input ...................................................................................... 1-6
Chain Port Output ..................................................................................... 1-6
Three Methods of Control................................................................................. 1-7
Front Panel .................................................................................................. 1-7
Adtran PC Program ................................................................................... 1-7
SNMP ........................................................................................................... 1-7
TSU Clock Sources ............................................................................................. 1-8
Network Timed .......................................................................................... 1-8
DTE Timed .................................................................................................. 1-9
Internal Timing ......................................................................................... 1-10
TSU Testing ....................................................................................................... 1-11
Self Tests .................................................................................................... 1-11
Loopback Tests ......................................................................................... 1-11
Network Loopbacks ......................................................................... 1-12
DTE Interface Loopbacks ................................................................. 1-13
Pattern Generation ................................................................................... 1-13
All Ones .............................................................................................. 1-13
3 in 24 .................................................................................................. 1-13
511 ....................................................................................................... 1-14
1 in 8 .................................................................................................... 1-14
Application........................................................................................................ 1-14
Chapter 2. Installation ............................................................................................ 2-1