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About the Modem 1-1
About the
Modem
Chapter 1
About the Modem
Contents
Introduction .................................................................................................. 1-2
Safety and Operational Notices ................................................................ 1-3
Operating the Modem from the Front Panel ................................................. 1-4
Selecting Programmed Option Sets .............................................................. 1-5
Automatic Calling Interfaces (ACUs) .......................................................... 1-5
AT ACU .................................................................................................... 1-5
V.25bis ACU ............................................................................................. 1-5
LPDA2 ACU ............................................................................................ 1-5
Managing a Modem ...................................................................................... 1-6
Restoring Data Transmission ........................................................................ 1-6
ITU-T V.34 Compliant Modulation Mode .................................................... 1-6
Synchronous Data Compression (SDC) Feature .......................................... 1-7
Automode/Multimode Feature ..................................................................... 1-7
Remote Configuration .................................................................................. 1-8
Error Correction and Data Compression ...................................................... 1-8
Security ......................................................................................................... 1-8
Status Snapshots ........................................................................................... 1-8
Adaptive Rate System ................................................................................... 1-9
Troubleshooting (V.54 and V.22bis Tests) .................................................... 1-9
Country-Specific Information ....................................................................... 1-9
NET Compliance .......................................................................................... 1-9
CE Regulatory Marking Directive (93/68/EEC) .......................................... 1-9