ADTRAN Express NTU ISDN Terminal Adapter User Manual

Product Features

■ Provides up to 128 kbps

of dialed or dedicated
bandwidth for high-speed
data applications

■ Supports dedicated 128

kbps service over two
wires in a limited distance
modem or leased line
application

■ Uses standard ISDN

Basic Rate service

■ EIA-232, V.35 or EIA-530

DTE interface

■ Supports data rates up to

128 kbps synchronous or

230.4 kbps asynchronous

■ Built-in network termina-

tion and terminal adapter
functionality

■ Supports BONDING and

Multilink PPP

■ Remotely configurable

over the ISDN line

■ Manual, automatic, and

stored number dialing

■ Windows

®

Plug-and-Play

compatible

Express NTU

Synchronous ISDN Terminal Adapter

The Express NTU™is a full-featured
single-port terminal adapter that allows
cost-effective high-speed data transmission
at rates up to 128 kbps. The Express NTU

is ideal for LAN/WAN connectivity or
disaster recovery.

ISDN service is delivered from the
network by a single 2-wire U-interface which
is connected directly to the Express NTU.
The Express NTU responds to loopback
commands from the telephone company
central office to make testing easy.

The Express NTU transmits data over an
EIA-530, EIA-232 or V.35 DTE interface. The
Express NTU performs at synchronous data
rates of 2400 bps to 128 Kbps and asynchro-

nous rates of 300 bps to 230.4 Kbps. Network
transmission at 128 Kbps is supported using
either multilink PPP or the Bonding delay
equalization protocol.

The Express NTU also supports dedicated
leased 2B1Q services. This provides a
dedicated point-to-point service with no
dialing necessary.

The front panel of the Express NTU
provides five LEDs that indicate the status
of the product, line and DTE. Configuration,
testing and monitoring of the unit can be
accomplished through a VT100 terminal
connected to the DTE port, or remotely over
the ISDN line.

Global Solutions

Express NTU

ISDN

ISDN

PC

PC

PC

PC

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U

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R

D

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1

B

2

P

W

R

L

I

N

E
T

E

S

T

Express NTU

T

D

I

S

U

X

R

T

R

D

B

1

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2

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Specifications subject to change without notice. ADTRAN and NTU are trademarks of
ADTRAN, Inc. and/or its affiliates in the U.S. and certain other countries. All other trade­marks mentioned in this document are the property of the their respective owners.

Product Specifications

Network Interface

■

RJ-45 for ISDN Basic Rate U-Interface

DTE Interface

■

EIA-530, EIA232 or V.35

Dialing Selections

■

Manual or automatic stored number dialing

■

In-Band DTE Dialing: V.25 bis, AT commands

■

DTR Dialing of stored number

Data Rates (DTE)

■

2400 bps to 128 kbps synchronous

■

300 bps to 230.4 kbps asynchronous

Protocols

■

CCITT V.120, V.110, T-LINK, SAP, Clear Channel,
Async, Async to Sync PPP, Multilink PPP, BONDING
Mode 1, Fallback

Interoperability

■

BONDING-compatible inverse multiplexers, Switched
56 DSUs, ISDN TAs, ISUs, PPP compatible routers

Switch Compatibility

■

National ISDN-1, Lucent 5ESS™,

Nortel DMS-100

™

, NEC

Diagnostic and Testing

■

Local and remote loopbacks, CCITT V.54 loopback,
2047 pattern, remote configuration

Express NTU

Synchronous ISDN Terminal Adapter

Agency Approvals

■

FCC Part 15, Class B, FCC Part 68, UL,
CUL, CSA, and CS03

Environment

■

Operating: 0° to 50°C (32° to 122°F)

■

Storage: –20° to 70°C (–4° to 158°F)

■

Relative Humidity: Up to 95%, non-condensing

Physical

■

Size: 5.7 cm H, 19.1 cm D x 25.5 cm W
(2.25" H, 7.5" D, 10.0" W)

■

Weight: 1.36 kg (3 lbs.)

■

Power: +12 VDC, 8 W maximum dissipation

Product Includes

■

One seven-foot RJ-45 telephone cable

■

User Manual

Ordering Information

Equipment Part #

Express NTU™, no P/S 1200200L1

Express NTU, 115 vAC 4200200L1

Express NTU, Euro 220 vAC 4200200L2

Express NTU, Australian 220 vAC 4200200L3

Express NTU, British 220 vAC 4200200L4

I61200200L1-8B July 2003

Copyright ©2003 ADTRAN, Inc.

All rights reserved.

ADTRAN is a

TL 9000 registered company.

ADTRAN is a

ISO 9001 registered company.

ADTRAN, Inc.

Corporate Headquaters

Attention:

International Department

901 Explorer Boulevard

Huntsville, Alabama 35806

USA

www.adtran.com

Asia Pacific—Beijing, China

[phone] voice

[phone] fax

[e-mail]

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[e-mail]

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[phone] fax

[e-mail]

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Australia

[phone] voice

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[e-mail]

European/Middle East/Africa—

Bad Homburg, Germany
[phone] voice

Germany

[phone] voice

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[phone] fax

Germany

[e-mail]

Latin America/Caribbean

[phone] voice

Florida, USA

[phone] voice

Alabama, USA

[phone] fax

Florida, USA

[e-mail]

Mexico

[phone] voice

Florida, USA

[phone] voice

Alabama, USA

[phone] fax

Florida, USA

[e-mail]

U.S. Headquarters

Huntsville, Alabama USA

[phone] voice
[phone] voice

[phone] fax

[e-mail]