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The ADTRAN TSU LT is a low cost,
full-featured T1/FT1 Data Service/ Channel Service Unit (DSU/CSU).
The TSU LT
provides an interface between T1 or Fractional T1 service and
the end user’s Data Terminal Equipment (DTE) for applications
such as LAN to LAN bridging, Frame Relay circuit termination
and videoconferencing.
The TSU LT provides access to
traditional dedicated point-to-point T1 services as well as
network termination for Frame Relay. Housed in a compact,
durable plastic housing the TSU LT supports synchronous data
rates from 56 kbps to 1.536 Mbps at Nx56 or Nx64 kbps. A
single V.35 physical interface provides a connection to the
end user’s DTE equipment.
For configuration and testing, the TSU
LT provides the capability to control a remote TSU LT through
the T1 FDL channel. If the FDL channel is unavailable, the TSU
LT can use 8 kbps of the data traffic to provide configuration
and control of the remote unit. The in-band control channel is
used on an as needed basis and is automatically controlled by
the TSU LT.
The TSU LT responds to standard local
and remote loopback commands from the tele-phone company
central office. In addition, the user has several built-in
test capabilities including V.54 remote loopback and 511 BERT
test patterns. Complete configuration and performance data is
available from the front panel keypad and two-line by 16
character LCD display. For additional configuration and
monitoring options, the TSU LT supports a VT100 terminal
configuration and control mode which is available through the
control port. For direct serial connections or for remote
devices, optional Windows® based PC Management is available
through the comprehensive, easy to use T-Watch PRO™ software
package.
ADTRAN provides several T1 DSU/CSUs for
a variety of customer applications. Additional products in the
TSU family include the TSU, TSU ESP, TSU100, TSU120, TDU120
and the TSU600. These T1/FT1 DSU/CSUs offer flexibility,
modularity and end user configuration. The modular approach
allows the ADTRAN TSU family to serve in point to point T1
applications with a mixture of voice, data and video.
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