ADTRAN 1202060L2-1, Руководство пользователя

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Chapter 1. Introduction
1202060L2-1 TSU LT User Manual 1-3
TSU LT Overview
This section provides a functional description of the TSU LT,
describes its features, and illustrates its four interfaces.
Functional Description
The ADTRAN TSU LT is one of several T1 multiplexers that
offer complete flexibility for connection of various data
sources to T1 or FT1 facilities. This family of TSU
multiplexers includes the following:
• TSU and TSU LT - T1 CSU/DSUs with a single Nx56K/
64K serial port.
• TSU 100 - Same as the TSU with the added feature of a
slot in the rear panel to house an option module. Each
module offers up to four additional data ports.
• TSU 600 - Same as the TSU with the added feature of six
slots in the rear panel to house up to six option modules.
Each module offers up to four additional data ports for a
total of 24 possible data ports.
Figure 1-1. TSU LT Unit - Front View
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.
PWR
TEST ALM
ERR
TD
CS RS
RD
CANCEL
ENTER
TSU LT