User's Guide NETWORK DEVICE 326X V.34, V.34-SDC, and V.32bis

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