Alcatel-Lucent 1675 LambdaUnite Installation And System Turn-Up Manual page 633

Glossary
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Synchronous Network
The synchronization of transmission systems with synchronous payloads to a master (network)
clock that can be traced to a reference clock.
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T TBD
To Be Determined
TI
Timing Interface
TID (Target Identifier)
A provisionable parameter that is used to identify a particular etwork Element within a network.
It is a character string of up 20 characters where the characters are letters, digits, or hyphens (-).
TL1 (Transaction Language One)
A subset of the ITU human-machine language.
TM (Terminal Multiplexer)
An Add/Drop Multiplexer with only one stream interface.
Tributary
A signal of a specific rate (2 Mbit/s, 34 Mbit/s, 140 Mbit/s, VC12, VC3, VC4, STM-1 or STM-4)
that may be added to or dropped from a line signal.
Two-Way Point-to-Point Cross-Connection
A two-legged interconnection, that supports two-way transmission, between two and only two
tributaries.
Tx
Transmit/OUT
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U UL
The UL marking indicates that the products conform to relevant American Directives.
UPL
User Panel
UPSR
Unidirectional Path-Switched Ring
UR
The UR marking indicates that the products conform to relevant American Directives.
User Privilege
Permissions that a user must have on the computer system on which the system software runs.
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365-374-198R10.5.4
Issue 1 July 2009
Alcatel-Lucent – Internal
Proprietary – Use pursuant to Company instruction
GL-11