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Appendix C
Acronyms
TL1
Transaction Language 1
TLS
Transparent LAN service
TMN
Telecommunications Management Network
TSA
Time Slot Assignment
TSI
Time-Slot Interchange
Tx
Transmit
U
UAS
Unavailable Seconds
UDP/IP
User Datagram Protocol/Internet Protocol
UID
User Identifier
UPSR
Unidirectional Path Switched Ring
UTC
Universal Time Coordinated
UTP
Unshielded Twisted Pair
V
VDC
Volts Direct Current
Cisco ONS 15454 Installation and Operations Guide
C-13
November 2001
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