User manual

61202156L1-1 TDU 120e User Manual 1-1
Chapter 1
Introduction
TDU120e OVERVIEW
The TDU 120e is a T1/FT1 multiplexer with the following
features:
• Nx56/64 V.35 data port
• DS-1 (PBX) interface
• option slot
• embedded SNMP management
The TDU 120e’s option slot accepts one of many available
option modules for voice and data applications.
The TDU 120e serves as the link between user data sources
such as:
• local area network (LAN) bridges and routers
•computers
•CAD systems
• teleconferencing equipment
•PBXs.
Through the use of multiple data ports, the TDU 120e can
simultaneously connect one or more of these devices to a T1
circuit. The amount of bandwidth allocated to each port is
custom-programmable. You can manually allocate
bandwidth or set the bandwidth to change automatically at
predetermined times to use the available bandwidth most
advantageously. Changes in the configuration do not disrupt
data flow in channels that are not being reconfigured. The
unique architecture and the availability of option modules
provides a path for growth to accommodate future
requirements.