Specifications

<C#>-F V.3229 / V.3229L
<Re
f
erence>
A
bbreviations and Acronyms
TEI
Terminal Endpoint Identifi-
er
TELCO
Telephone Company
TELSET
Telephone Set
TM
Test Mode
TP
Test Pattern
TR
Terminal Ready
TST
Test
TTD
Temporary Text Delay
TTL
Transistor-to-Transistor
Logic
TX
Transmit
U
U
Reference Designator
UART
Universal Asynchronous
Receiver / Transmitter
USOC
Universal Service Ordering
Code
V
V.
CCITT Code Designation
V.24
List of definitions for inter-
change circuits between data
terminal equipment and data
circuit-terminating equip-
ment (and provisional
amendments, May 1977)
Vac
Volts Alternating Current
VAC
Value Added Carrier
VAL
Valid
Vdc
Volts Direct Current
W
WATS
Wide Area Telecommunica-
tions Access Method
(AT&T)
X
X.
CCITT Recommendation
Designation
XMIT
Transmit
XOFF
Transmitter Off
XON
Transmitter On
XTC
External Transmit Clock