ADTRAN Switch DSU III S2W User Manual

DSUIIIS2W  
2-Wire Switched 56 DSU/CSU  
The ADTRAN® DSU III S2W is a high-perform -  
ance data service unit/channel service unit  
(DSU/CSU) based on Northern Telecom  
Datapath® technology. The DSU III S2W  
incorporates advanced features utilizing  
microprocessor and VLSI technology in a  
standalone package. Using the Northern  
Telecom T-Link® rate adaption protocol and  
time compression multiplexing (TCM), the  
DSU III S2W transports customer synchro-  
nous (up to 64 kbps) or asynchronous (up to  
57.6 kbps) data over a 2-wire local loop to the  
network. Both EIA-232 and V.35 DTE inter-  
faces are provided for all data rates.  
The unit responds to standard loopback  
commands from the service provider and  
provides extensive test capabilities. Tests  
include DTE, DTE and loop, DTE with test  
pattern, and loop only.  
Product Features  
I Dialing by V.25 bis,  
EIA-366, enhanced AT  
command set, keypad  
or stored number  
I Compatible with Northern  
Telecom Datapath™  
technology  
The front panel of the standalone  
DSU III S2W contains a two-line by  
16-character LCD display and seven LEDs.  
The front panel keypad operates a simple  
menu structure which accesses setup,  
selection of test modes, local configuration,  
and manual or automatic dialing from  
stored numbers. Configuration is also  
available by using the AT command set.  
I EIA-232 and V.35 DTE  
interfaces  
I Auxiliary EIA-232 or  
EIA-366 dialing interface  
I Multiple tests and  
diagnostics  
The DSU III S2W supports manual  
(invoking a stored number or keypad) or  
automatic dialing. DTE interface dialing is  
supported by use of AT commands or V.25 bis  
in-band dialing. A separate DB-25 connector  
is provided for EIA-366 parallel dialing or out-  
of-band AT dialing.  
I Synchronous and a  
synchronous features  
(including 38.4 and  
57.6 kbps) DTE rates  
I T-Link rate  
adaption protocol  
I Auto answer of  
incoming calls  
I Industry-leading five-year  
North American warranty  
DSU III S2W  
Frame  
4W  
Relay/DDS  
Ethernet LAN  
DSU III S2W  
2W  
PC  
 

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