ADTRAN Network Card ISDN Terminal Adapter User Manual

Global Solutions  
Express NTU  
Synchronous ISDN Terminal Adapter  
Product Features  
The Express NTU is a full-featured  
nous rates of 300 bps to 230.4 Kbps. Network  
transmission at 128 Kbps is supported using  
single-port terminal adapter that allows  
I Provides up to 128 kbps  
of dialed or dedicated  
bandwidth for high-speed  
data applications  
cost-effective high-speed data transmission either multilink PPP or the Bonding delay  
at rates up to 128 kbps. The Express NTU  
is ideal for LAN/WAN connectivity or  
disaster recovery.  
equalization protocol.  
The Express NTU also supports dedicated  
leased 2B1Q services. This provides a  
I Supports dedicated 128  
kbps service over two  
wires in a limited distance  
modem or leased line  
application  
ISDN service is delivered from the  
dedicated point-to-point service with no  
network by a single 2-wire U-interface which dialing necessary.  
is connected directly to the Express NTU.  
The front panel of the Express NTU  
The Express NTU responds to loopback  
commands from the telephone company  
central office to make testing easy.  
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.  
I Uses standard ISDN  
Basic Rate service  
I EIA-232, V.35 or EIA-530  
DTE interface  
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-  
I Supports data rates up to  
128 kbps synchronous or  
230.4 kbps asynchronous  
I Built-in network termina-  
tion and terminal adapter  
functionality  
I Supports BONDING and  
Multilink PPP  
I Remotely configurable  
over the ISDN line  
PC  
I Manual, automatic, and  
stored number dialing  
PWR  
LINE  
B2  
B1  
RD  
TD  
ISDN  
®
TEST  
T
ISU XR  
I Windows Plug-and-Play  
compatible  
PC  
Express NTU  
PC  
PC  
PWR  
B2  
B1  
RD  
TD  
ISDN  
LINE  
TEST  
T
ISU XR  
Express NTU  
 

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