ISCP Interference Signal Code Power
ISDN Integrated Services Digital Network
ISIM IM Services Identity Module
ISM Industrial, Scientific and Medical
ISO International Organisation for Standardisation
ISP Internet Service Provider
ISUP ISDN User Part
ITC Information Transfer Capability
ITS Intelligent Transportation Systems
ITU International Telecommunication Union
ITU-R Radiocommunication Sector of the ITU
IUI International USIM Identifier
IUT Implementation Under Test
IWF InterWorking Function
I-WLAN Interworking WLAN
IWMSC InterWorking MSC
IWU Inter Working Unit
JAR file Java Archive File
JCRE Java Card™ Run Time Environment
JD Joint Detection
JNDI Java Naming Directory Interface
JP Joint Predistortion
JPEG Joint Photographic Experts Group
JTAPI Java Telephony Application Programming Interface
JVM Java™ Virtual Machine
K Constraint length of the convolutional code
Windows size
kB Kilobyte (1000 bytes)
Kbps kilo-bits per second
Kc Ciphering key
Ki Individual subscriber authentication key
KPAS Korean Public Alert System
KSI Key Set Identifier
Ksps kilo-symbols per second
L1 Layer 1 (physical layer)
L2 Layer 2 (data link layer)
L2ML Layer 2 Management Link
L2R BOP L2R Bit Orientated Protocol
L2R COP L2R Character Orientated Protocol
L2R Layer 2 Relay
L3 Layer 3 (network layer)
LA Location Area
LAA Licensed-Assisted Access
LAC Link Access Control
Location Area Code
LAI Location Area Identity
LAN Local Area Network
LAPB Link Access Protocol Balanced
LAPDm Link Access Protocol on the Dm channel
LATA Local Access and Transport Area