ZXCBTS (V5.4) CDMA Micro Base Transceiver Station & Remote Station Installation Manual
E-22
Abbreviation Full
Name
TTI Transmission
Timing
Interval
TX Transmitter
TXB Transmitter
Board
U
UDP
User Datagram Protocol
UDR
User Data Record
UE User
Equipment
UI User
Interface
UICC
Universal Integrated Circuit Card
UIM
Universal Interface Module
UL
Uplink (Reverse Link)
ULB
Universal LED Board
UM Unacknowledged
Mode
UMS
User Mobility Server
UMTS
Universal Mobile Telecommunications System
Um Interface
Um Interface-the interface between MS and BTS
UNI User-Network
Interface
UPT Universal
Personal
Telecommunication
URI
Uniform Resource Identifier
URL
Uniform Resource Locator
USCH
Uplink Shared Channel
UT Universal
Time
UTRA Universal
Terrestrial
Radio
Access
UTRAN
Universal Terrestrial Radio Access Network
V
VA Voice
Activity
factor
Variable-Rate
Variable Data Rate
VASP
Value Added Service Provider
VBR
Variable Bit Rate
VBS
Voice Broadcast Service
VC Virtual
Circuit
VCO
Voltage Control Oscillator
VGCS
Voice Group Call Service
VHE
Virtual Home Environment
VLR
Visitor Location Register
VMS
Voice Mail Server
VoIP
Voice Over IP
VPLMN
Visited Public Land Mobile Network