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Introduction
1-73920-A2-GN31-30 November 1996
392x
Plus
Operational Modes
The 392xPlus operational modes determine how your modem performs in various applications.
These operational modes are determined by your modem model and the selected configuration
options.
There are two operational modes:
• Singleport mode. Operates on both the singleport and multiport modems. Singleport mode is
the only operational mode for the singleport modem. For the multiport modem, it is in effect
when the MUX mode configuration option is set to Disable. The Singleport mode only
supports one port (DTE 1).
• Multiport operational mode. Operates only on the multiport
modems. Multiport mode is in
effect when the MUX mode configuration option is set to TDM/MSD or DTE_Bridge. It
supports from one to four ports (DTE 1–4), depending on how the modem is further
configured.
Using Table 1-1, identify your modem’
s operational mode based on the 392x
Plus modem model
and its selected MUX mode configuration option.
Table 1-1
392x
Plus
Operational Modes
392x
Plus
Modem
MUX Mode
Configuration Option
Operational Mode
Singleport n/a Singleport
Multiport MUX Mode: Disabled
MUX Mode set to:
TDM/MSD
DTE_Bridge
Singleport
Multiport
Multiport
Use the identified operational mode (Singleport or Multiport) to choose the configuration options
that are appropriate for your application. Refer to Chapter 4,
DCP Configura
tion for more
information on configuration options.
392x
Plus
Features
The 392xPlus modems share a wide variety of features.
• Additional VF parameters under the V.32 family modulations in 4-wire mode.
• International Support to correctly detect the call progress signals (dial tone, busy
, fast busy
,
ringback) for a variety of countries.
•
Channel adaptive Trellis-Coded Modulation
– Paradyne’
s advanced T
rellis-Coded
transparent forward error correction for Trellis multipoint and high-speed point-to-point
applications.
• Convenient migration to new or optional features through software downloading.
•
Extended data circuits with diagnostic capabilities.