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Introduction
Chapter 1
TSU LT OVERVIEW
The TSU LT belongs to the ADTRAN T1 single-port CSU/DSU family offering complete flexibility in
connecting various data sources to T1 or FT1 facilities (see Table 1-1).
Product
TSU ACE
T1 CSU/DSU with a single Nx56/64K serial port that offers front panel configuration only.
TSU LT
T1 CSU/DSU with a single Nx56/64K serial port that offers terminal, front panel, or T-Watch PRO
configuration options.
The TSU LT serves as the link between user data sources such as local area network (LAN) bridges and
routers, computers, CAD systems, and teleconferencing equipment. The amount of bandwidth allocated to
the port is custom programmable. The data terminal equipment (DTE) data can occupy contiguous or
alternate channels in the T1 stream, and the channels may start at any position.
TSU LT Physical Description
Figure 1-1 shows the TSU LT front panel and Figure 1-2 shows the rear panel.
.
NETWORK
61203060L1-1A
Table 1-1. TSU Family of Single-port CSU/DSUs
PWR
ERR
ALM
TD
TST
Figure 1-1. TSU LT - Front Panel
CONTROL
TEST JACKS
CHAIN IN
CHAIN OUT
IN
OUT
MON
Figure 1-2. TSU LT - Rear Panel
© 2003 ADTRAN, Inc.
Description
CS
RS
115VAC 60HZ .15A
V.35 Nx56/64
19
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