ADTRAN ISDN Terminal Adapter manual Express NTU, Isdn, Product Features, Global Solutions

Global Solutions

Express NTU

Synchronous ISDN Terminal Adapter

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

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.

■ Manual, automatic, and

stored number dialing

■ Windows® Plug-and-Play

compatible

	PC
ISDN
Express NTU	PC

PC

ISDN

Express NTU PC