392Xplus Modem Features; 392Xplus Singleport Modem Features; 392Xplus Multiport Modem Features - Paradyne COMSPHERE 3920Plus Technical Reference Manual

392xPlus Modem Features

The 392xPlus modems share a wide variety of features.
• Asynchronous DTE rates of 115.2 kbps and 76.8 kbps.
• Asynchronous data compression and error correction.
• Synchronous data compression.
• Additional VF parameters under the V.32 and V.34 family modulations in 4-wire mode.
• International Support to correctly detect the call progress signals (dial tone, busy, fast busy,
• Channel adaptive Trellis-Coded Modulation – Paradyne's advanced Trellis-Coded
• Convenient migration to new or optional features through software downloading.
• Extended data circuits with diagnostic capabilities.
• Network management system (NMS) support through the COMSPHERE 6800 or
• Automatic and manual backup with standby capabilities for 4-wire/2-wire leased-line

392xPlus Singleport Modem Features

Features specific to 392xPlus singleport modems are:
• Four-wire/two-wire leased-line modulations.
• Dial-line modulations.
Refer to
modulations information.

392xPlus Multiport Modem Features

Features specific to 392xPlus multiport modems are:
• Four-port time division multiplexer (TDM) operation.
• Modem Sharing Device (MSD).
• Digital Bridging.
• Mux enabled, four-wire/two-wire leased-line modulations: V.34 (33,600, 28,800, 24,000,
• Mux enabled, dial-line modulations: V.34 (33,600, 28,800, 24,000, 19,200, 16,800, 14,400,
3920-A2-GH30-40
ringback) for a variety of countries.
transparent forward error correction for Trellis multipoint and high-speed point-to-point
applications.
6700 Series NMS using Advanced Diagnostic protocol (ADp).
applications. (The backup facility may be either a 2-wire dial line or a 2-wire leased line.)
Table 1-2 in the Technical Specifications section of this chapter for leased- and dial-line
19,200, 16,800, 14,400, 12,000, 9600, 7200, 4800, and 2400 bps), V.32terbo (19,200 and
16,800 bps), V.32bis (14,400, 12,000, 9600, 7200, and 4800 bps), V.32 (9600 and 4800 bps),
and Trellis Multipoint (TMp) (19,200, 14,400, 9600, 7200, 4800, and
2400 bps).
12,000, 9600, 7200, 4800, and 2400 bps), V.32terbo (19,200 and 16,800 bps), V.32bis
(14,400, 12,000, 9600, 7200, and 4800 bps), V.32 (9600 and 4800 bps).
October 1998
Introduction
1-7