Paradyne COMSPHERE 3920PLUS Series, Technical Reference Manual

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Introduction
1-7 3920-A2-GH30-40 October 1998
392xPlus Modem Features
The 392xPlus modems share a wide variety of features.
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Asynchronous DTE rates of 115.2 kbps and 76.8 kbps.
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Asynchronous data compression and error correction.
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Synchronous data compression.
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Additional VF parameters under the V.32 and V.34 family modulations in 4-wire mode.
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International Support to correctly detect the call progress signals (dial tone, busy, fast busy,
ringback) for a variety of countries.
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Channel adaptive Trellis-Coded Modulation – Paradyne’s advanced Trellis-Coded
transparent forward error correction for Trellis multipoint and high-speed point-to-point
applications.
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Convenient migration to new or optional features through software downloading.
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Extended data circuits with diagnostic capabilities.
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Network management system (NMS) support through the COMSPHERE 6800 or
6700 Series NMS using Advanced Diagnostic protocol (ADp).
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Automatic and manual backup with standby capabilities for 4-wire/2-wire leased-line
applications. (The backup facility may be either a 2-wire dial line or a 2-wire leased line.)
392xPlus Singleport Modem Features
Features specific to 392xPlus singleport modems are:
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Four-wire/two-wire leased-line modulations.
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Dial-line modulations.
Refer to Table 1-2 in the Technical Specifications section of this chapter for leased- and dial-line
modulations information.
392xPlus Multiport Modem Features
Features specific to 392xPlus multiport modems are:
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Four-port time division multiplexer (TDM) operation.
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Modem Sharing Device (MSD).
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Digital Bridging.
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Mux enabled, four-wire/two-wire leased-line modulations: V.34 (33,600, 28,800, 24,000,
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).
•
Mux enabled, dial-line modulations: V.34 (33,600, 28,800, 24,000, 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).