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T

he COMSPHERE 3920

Plus Series of software definable, high-speed, network-managed, analog

private line modems are fully compatible with ITU V.34 with data rates up to 33,600 bps.

Based on Paradyne’s award-winning COMSPHERE 3800 Series architecture, the software-defined

flexibility of the 3920

Plus Series allows you to change, upgrade, or enhance both the single-port and

four-port families of modems, via downloads over the public switched or leased-line network.

The COMSPHERE 3920

Plus Series delivers unsurpassed reliability with its full-featured standalone

and carrier mount designs for either point-to-point or multipoint applications. The four-port Time Division

Multiplexer (TDM) modem family maximizes your applications’ network efficiency and cost

effectiveness by reducing the potential for additional lines and/or equipment.

The single-port modem family is the newest member of the 3920

Plus Series. Like the other

members of the series, the single-port fully supports ITU V.34 (33,600 bps) can be network managed

by the COMSPHERE 6700 Network Management System; and meets the requirements to support

data integrity and speed critical analog applications.  

The COMSPHERE 3920

Plus Series modems can be configured for two or four-wire analog leased-

line networks with dial restoral via two-wire dial or two-wire leased line. Should the line quality

deteriorate, the COMSPHERE 3920

Plus Series modems (if optioned) will automatically downshift to

lower speeds, attempting to preserve the link. If the modems are not able to operate at the minimal

selected rate, the modem will initiate non-disruptive dial restoral.

COMSPHERE

®

3920

PLUS SERIES

V.34 ANALOG PRIVATE 
LINE MODEM

B E N E F I T S

MEETS HIGH-SPEED NETWORK REQUIRE-

MENTS WITH SPEEDS UP TO 33,600 bps

OVER TWO OR FOUR-WIRE LEASED-LINE

AND PUBLIC SWITCHED DIAL NETWORKS

PROTECTS HARDWARE INVESTMENT WITH

SOFTWARE-DRIVEN ARCHITECTURE

FOUR-PORT TIME DIVISION MULTIPLEXER

(TDM) PROVIDES MAXIMUM EFFICIENCY

OVER ANALOG LEASED-LINE CIRCUITS,

REDUCING POTENTIAL FOR ADDITIONAL

LINES AND COMMUNICATIONS

EQUIPMENT

PARADYNE’S NETWORK MANAGEMENT

SYSTEM ENSURES ADVANCED 

MODEM CONTROL, NETWORK 

EFFICIENCY, AND FAULT ISOLATION,

MAXIMIZING APPLICATION UPTIME 

AND USER SATISFACTION

PREVENTS INTERRUPTIONS OR DATA LOSS

WHEN SWITCHING BETWEEN LEASED LINE

AND DIAL RESTORAL

DELIVERS FASTER RESPONSE TIMES WITH

TRELLIS MULTIPOINT TURN-AROUND

TIMES AS LOW AS 10 MILLISECONDS

SUPPORTS DIAGNOSTIC TAIL CIRCUITS

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