Paradyne COMSPHERE 3920PLUS Specifications

COMSPHERE

®

3920

PLUS

V.34 ANALOG PRIVATE
LINE MODEM

BENEFITS

•

MEETS HIGH-SPEED NETWORK REQUIRE­MENTS 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

SERIES

The COMSPHERE 3920

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

The COMSPHERE 3920
and carrier mount designs for either point-to-point or multipoint applications. The four-port T ime 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 of software definable, high-speed, network-managed, analog

Plus

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

Plus

Series delivers unsurpassed reliability with its full-featured standalone

Plus

Series. Like the other

•

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

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
line networks with dial restoral via two-wire dial or two-wire leased line. Should the line quality
deteriorate, the COMSPHERE 3920
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.

Plus

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

Plus

Series modems (if optioned) will automatically downshift to

™

FEATURES

• S

UPPORTS DATA RATES UP TO 33,600 bps

•

HIGH-SPEED, MULTIPOINT OR POINT­TO-POINT NETWORK SUPPORT WITH
MIXED INBOUND/OUTBOUND RATES IN
MULTIPOINT MODE

•

FOUR-PORT TIME DIVISION MULTIPLEXER
(TDM) AND MODEM SHARING DEVICE
(MSD) FUNCTIONALITY

•

DESIGNED FOR GROWTH AND MIGRATION
WITH SOFTWARE DOWNLOADING OF
UPGRADES AND NEW FEATURES OVER THE
DIAL OR LEASED-LINE NETWORK

•

FULLY INTEGRATED LEASED-LINE NETWORK
MANAGEMENT CAPABILITY WITH THE
COMSPHERE 6700 NETWORK
MANAGEMENT SYSTEM (NMS)

•

AUTOMATIC AND NON-INTERRUPTIVE
RESTORAL OF THE PRIMARY LEASED LINE
WITH HIGH-SPEED DIAL OR SECONDARY
TWO-WIRE LEASED LINE

•

MULTIPOINT DIAL RESTORAL CAPABILITY

•

FRONT PANEL CONTROL OF LOCAL AND

SPECIFICATIONS

Leased-Line Modulations:

ITU V.34: 33.6 Kbps, 31.2 Kbps, 28.8 Kbps,

26.4 Kbps, 24 Kbps, 21.6 Kbps, 19.2 Kbps,

16.8 Kbps, 14.4 Kbps,12 Kbps, 9.6 Kbps,

7.2 Kbps, 4.8 Kbps TCM synchronous/

asynchronous
ITU V.33: 14.4 Kbps, 12 Kbps TCM synchronous
V.32

terbo

*: 19.2 Kbps, 16.8 Kbps TCM,

synchronous/asynchronous
ITU V.32 bis: 14.4 Kbps, 12 Kbps, 9,600 bps,

7,200 bps TCM, 4,800 bps Quadrature

Amplitude Modulation (QAM)

synchronous/asynchronous
ITU V.32: 9,600 bps TCM, 4,800 bps QAM
ITU V.29: 9,600 bps TCM, 4,800 bps QAM

synchronous
ITU V.27 bis: 4,800 bps 2,400 bps Differential

Phased Shift Keying (DPSK)

Multipoint Modulations:

Trellis Multipoint 19.2 Kbps, 14.4 Kbps, 9,600

bps, 7,200 bps, 4,800 bps, 2,400 bps

Dial Modulations:

ITU V.34
V.32

terbo

*
ITU V.32 bis
ITU V.32
ITU V.22 bis: 2,400 QAM
ITU V.22: 1,200 DSK
ITU V.23: 1,200/75 bps, 600/75 bps (FSK)
ITU V.21: 300 bps FSK
AT&T 212A 1,200 bps (DPSK)
AT&T 1035 300 bps (FSK)

Transmit VF Interface

Signal level: Selectable 0 to -15dbm
Impedance: 600 ohms +10% balanced
Out of band energy meets international

standards

Receive VF interface

Impedance: 600 ohms + 10% balanced

VF Connectivity

Leased line JM 8 (Standalone) 50-pin Mass

Termination (Nestcard)
Dial Line RJ-11C permissive (Standalone)
RJ-21X permissive 50-pin connector (Nestcard)

DTE interface

(Standalone) CCITT V.24/EIA-RS232-D
25-pin D Type sub miniature connector

Power Requirements

100 to 240 VAC, 50-60 Hz (Standalone)
100 to 240 VAC, 50-60 Hz and 48V DC (Nestcard)

Power Consumption

6 watts speaker off (Standalone)
4 watts each card (Nestcard)

Operating Environment

Normal temperature: 32°F (0°C) to 122°F (50°C)
Relative humidity: 5% to 90% non-condensing
Shock and vibration: withstands normal shipping
Storage temperature: -4°F (-20°C) to 158°F (70°C)

Auto-Mode

V.34/V.32

terbo*

/V.32 bis/V.32/V.22 bis/V.22/

212A/1035

Dimensions

Standalone

7.6” W x 12” D x 2.2” H

(19.3 cm W x 30.48 cm D x 5.59 cm H)
Nestcard

7.25” W x 13” D x 0.97” H

(18.42 cm W x 33.02 cm D x 2.46 cm H)

Weight

40 oz. (1.13 Kg) (Standalone)
16 oz. (0.45 Kg) (Nestcard)

Approvals

The COMSPHERE 3920

Plus

Series meets an
extensive list of country certifications/approval
requirements. Orderable model and feature
numbers vary by country.

REMOTE MODEMS FOR CONFIGURATION,
CONTROL AND STATUS

•

SUPPORTS ITU V.34, V.33, V.32 bis, V.32, V.29,
V.27 bis, AND 19,200* bps

A few more reasons to connect with Paradyne—the industry
leader and winner of these awards for modem products.

JULY 1993

BEST TWO-WAY
HIGH-SPEED
MODEM

PC Computing

BEST 200

June 1994

EDITORS'

CHOICE

For additional information on this or any Paradyne product or service, contact the office nearest you. Or, dial toll-free (USA)
800 PARADYNE or call 813 530-8623. Fax (USA) 813 530-8216.

Toronto 905 709-5000 fax: [phone] Montreal 514 288-0001 fax: [phone]
Hong Kong 852 2543-0083 fax: [phone] Japan 81 3-5541-6630 fax: [phone]
Singapore 65 355-5230 fax: [phone] Latin America 813 530-8358 fax: [phone]
France 33 492 942-500 fax: [phone] Visit the Paradyne Power Pages at http://www.paradyne.com
China 8610 6499-1425 fax: [phone] Japanese Language website: www.paradyne.co.jp

*

terbo

(19,200 bps) is a Paradyne modulation which is currently not supported by the ITU. Specifications subject to change

V.32
without notice. Printed in U.S.A. ©Paradyne Corporation 1998.

COMSPHERE is a registered trademark of Paradyne Corporation. PARADYNE is a trademark of Paradyne Corporation. All other
products or services mentioned are the trademarks, service marks, registered trademarks, or registered service marks of their
respective owners.MOD-39PL-3-0398

™