ADTRAN Express NTU ISDN Terminal Adapter - 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
TD
ISU XRT
RD B1 B2 PWR
LINE TEST
Express NTU
TD
ISU XRT
RD B1 B2 PWR
LINE TEST