3G Third Generation
T1 Transmission service at the DS1 rate of 1.544 Mbps
T3 Transmission service at the DS3 rate of 44.736 Mbps
TA Technical Advisor
TA Technical Advisory
TAG Technical Advisory Group
TAPI Telephony Application Programming Interface (Microsoft Corp.)
TASI Time Assigned Speech Interpolation
TB Terabyte (1,000,000,000,000 bytes)
TBOP Transparent Bit Oriented Protocol
Tbps Terabit-per-second
TCAP Transaction Capabilities Applications Part
TCL Tool Command Language
TCO Total Cost of Ownership
TCP Transmission Control Protocol
TDD Time Division Duplex
TDM Time Division Multiplexer
TDMA Time Division Multiple Access
TDMA/TDD Time Division Multiple Access with Time Division Duplexing
TDR Time Domain Reflectometry
TFTP Trivial File Transfer Protocol
TIA Telecommunications Industry Association
TIB Tag Information Base
TIMS Transmission Impairment Measurement Set
TL1 Transaction Language 1
TLS Transparent LAN Service
TMN Telecommunications Management Network
ToS Type of Service
TRS Telecommunications Relay Services
TSAPI Telephony Services Application Programming Interface (Novell Inc.)
TSI Time Slot Interchange
TSR Terminal Stay Resident
TTRT Target Token Rotation Time
TTY Text Telephone
TV Television
TWX Teletypewriter Exchange (also known as Telex)
TX Transmit
