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Chapter 1. Introduction
1-2
TSU 120 User Manual 61202129L1-1
The TSU 120 offers a wide variety of network management
options. You can manage via SNMP through the 10BaseT (TSU
120e only) or chain-in ports. If you are using T-WATCH Pro, a
Microsoft Windows® -based program, you can manage the
TSU 120 via the same 10BaseT (TSU 120e only) or chain-in
ports. An enhanced VT 100 terminal interface is also provided.
Standard Features in the TSU 120
The following list describes the standard features in both the
TSU 120 and the enhanced TSU 120e.
• A single T1 interface.
• An Nx56/64 V.35 port and DSX-1 (PBX) interface.
• SNMP, Telnet, and T-WATCH Pro management via SLIP or
10BaseT (10BaseT is only in the TSU 120e).
• Ability to proxy for “agentless” units
• Enhanced terminal mode
• An inband communication channel requiring only 8k of
bandwidth from a single DS0.
• One option slot to house option modules with up to four ad-
ditional ports, including voice and data.
• Allows mix of port types to meet the data interface require-
ments.
• Easy configuration capabilities using simplistic menus dis-
played in a liquid crystal display (LCD) window operated
by a front panel keypad.
• Two programmable configuration maps that define the
bandwidth allocation between data ports.
• Data drop and insert, as well as full drop and insert.
• Flash memory for software updates.
• Timing is selectable from the network, from the Nx56/64 or
DSX-1 ports, internally, or from a secondary interface.
• Fractional T1 loopbacks as defined in Annex B of ANSI
T1.403-1995
• QRSS; 511 test patterns using Nx option.
• Integrated Dial Backup Capability in the Base Nx56/64 port
( TSU 120e only)
• Extensive self-testing and monitoring provides assurance of
proper operation.