Specifications

Revision: 2008-02-07 xi
Table of Contents
1 References........................................................................................................................ 1-1
2 Watson TDM Overview..................................................................................................... 2-2
2.1 Introduction ............................................................................................................... 2-2
2.2 Modem Features....................................................................................................... 2-2
2.3 Accessories............................................................................................................... 2-3
2.4 Compatibility with other Watson modems................................................................. 2-3
3 Watson TDM Features...................................................................................................... 3-1
3.1 DSL Interface ............................................................................................................ 3-1
3.1.1 Master / Slave................................................................................................ 3-1
3.1.2 Linerates and payload rates........................................................................... 3-1
3.1.3 Multipair operation ......................................................................................... 3-2
3.1.4 DSL Clocking options..................................................................................... 3-3
3.1.5 Power Backoff................................................................................................ 3-4
3.1.6 Wetting Current.............................................................................................. 3-5
3.2 E1 Interface............................................................................................................... 3-5
3.2.1 Framing.......................................................................................................... 3-5
3.2.2 AIS Detection................................................................................................. 3-6
3.2.3 AIS Generation .............................................................................................. 3-6
3.2.4 E1 Clock Modes............................................................................................. 3-7
3.2.5 High Capacity E1 ........................................................................................... 3-8
3.3 ISDN PRA Interface ................................................................................................ 3-10
3.3.1 CRC4 Processing Options........................................................................... 3-10
3.3.2 Generation of CRC4 error notifications to the ET ........................................ 3-14
3.4 nx64 kbit/s Interface................................................................................................ 3-15
3.4.1 Features....................................................................................................... 3-15
3.4.2 Handshake Operation.................................................................................. 3-16
3.4.3 Supported V.54 Loops ................................................................................. 3-16
3.4.4 Automatic Loop Control through the DTE/DCE Interface ............................ 3-16
3.4.5 Clock Direction............................................................................................. 3-17
3.4.6 Clock Polarity............................................................................................... 3-17
3.4.7 Byte Timing.................................................................................................. 3-17
3.4.8 Multiservice / nx64 Clock Modes ................................................................. 3-17
3.5 Timeslot Mapping.................................................................................................... 3-18
3.5.1 E1 mappings................................................................................................ 3-18
3.5.2 nx64 mappings............................................................................................. 3-19
3.5.3 Multiservice and Mixed Mode mappings...................................................... 3-20