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I-CSCF - Interrogating Call Session Control Function
i-mode
I - Information Fames
IA5 - International Alphabet 5
IAB - Internet Architecture Board
IAC - Inquiry Access Code
IAM - Initial Address Message
IANA - Internet Assigned Numbers Authority
IAPP - Inter Access Point Protocol
IBSS - Independent Basic Service Set
ICANN - Internet Corporation for Assigned Names & Numbers
ICID - IM CN subsystem Charging Identifier
ICMP - Internet Control Message Protocol
ICV - Integrity Check Value
ID - Identifier / Identity / Identification
ID - Identity
IDD - International Direct Dial
Idle Handoff
Idle mode or Idle State
IDN - Integrated Digital Network
IDS - Intrusion Detection System
IE - Information Element
IEEE - Institute of Electrical and Electronics Engineers
IEEE 802.1 - Bridging & Management
IEEE 802.10 - SILS (Standards for Interoperable LAN/MAN Security)
IEEE 802.11 - Wireless
IEEE 802.11a
IEEE 802.11b
IEEE 802.11d
IEEE 802.11e
IEEE 802.11f
IEEE 802.11g
IEEE 802.11h
IEEE 802.11i
IEEE 802.12 - Demand Priority Access
IEEE 802.15 - Wireless Personal Area Networks
IEEE 802.16-2004
IEEE 802.16 - Broadband Wireless Metropolitan Area Networks
IEEE 802.1X
IEEE 802.2 - LLC (Logical Link Control)
IEEE 802.3
IEEE 802.4 - Token-Passing Bus Access Method
IEEE 802.5 - Token Ring Access Method
IEEE 802.6 - DQDB Access Method
IEEE 802.7 - Broadband LAN
IEEE 802.9 - Isochronous LAN
IEEE 806.16e
IEI - Information Element Identifier
IESG - Internet Engineering Steering Group
IETF - Internet Engineering Task Force
IFL - International Frequency List
IGP - Interior Gateway Protocol
IID (Invoke ID)
IK - Intergrity Key
IKE - Internet Key Exchange
ILMI - Integrated Local Management Interface
IM-CSI (IM - CAMEL Subscription Information)
IM-SSF (IP Multimedia - Service Switching Function)
IM (IP Multimedia)
IM CN (IP Multimedia Core Network)
IMA - Inverse Multiplexing over ATM
IMAP - Internet Message Access Protocol
IMAP4 - Internet Message Access Protocol 4
IMEI - International Mobile Equipment Identity
IMS - IP Multimedia Subsystem
IMSI - International Mobile Subscriber Identity
IMSI Attach
IMT2000 - International Mobile Telephony 2000
IMUN (International Mobile User Number)
IN - Intelligent Network
In Band Signalling
INAP - Intelligent Network Application Part
Infrared
Infrastructure Basic Service Set
Initial Ranging
INMARSAT - International Maritime Satellite Organization
Inquiry
Insured Burst
Insured Rate
Insured Traffic
Integrated Circuit
Integrity
INTELSAT - International Telecommunication Satellite Organization
Inter
Interactive service
Interconnection
Interface
Interference
Interleaving
Internet
Internet Telephony
InterNIC
Intra
Intra-Cell Handover
Intra Base Station Frame Handler
Intra PLMN handover
Intranet
IntServ - Intergrated Services
IOI - Inter Operator Identifier
IOV (Input Offset Value)
IP-CAN (IP-Connectivity Access Network)
IP - Intelligent Peripheral
IP - Internet Protocol
IP Address (IPv4)
IP Datagram
IP Flood
IP Multicast
IP Telephony
IPCS - IP Convergence Sublayer
IPDR (Internet Protocol Detail Record)
IPLMN (Interrogating PublicLandMobile Network).
IPSec - IP Security
IPv6 - Internet Protocol version 6
IR (IPDR Recorder)
IRCID - Initial Ranging Connection Identifier
IrDA - Infrared Data Association
Iridium
IRSG - Internet Research Steering Group
IRTF - Internet Research Task Force
IS-136 - Interim Standard 136
IS-41 - Interim Standard 41
IS-95 - Interim Standard 95
IS (IPDR Store)
ISAKMP - Internet Security Association and Key Management Protocol
ISC (IP multimedia subsystem Service Control interface)
ISDN - Integrated Services Digital Network
ISI - Inter Symbol Interference
ISIM - IMS Subscriber Identity Module
ISM - Industrial Scientific and Medical
ISO - International Standards Organization
ISOC- Internet Society
Isochronous user channel
ISP - Internet Service Provider
ISUP - ISDN User Part
IT - Information Technology
ITU-R - International Telecommunications Union-Radio communication Standardization Sector
ITU-T - International Telecommunications Union-Telecommunication Standardization Sector
ITU-T Series A
ITU-T Series B
ITU-T Series C
ITU-T Series D
ITU-T Series E
ITU-T Series F
ITU-T Series G
ITU-T Series H
ITU-T Series I
ITU-T Series J
ITU-T Series K
ITU-T Series L
ITU-T Series M
ITU-T Series N
ITU-T Series O
ITU-T Series P
ITU-T Series Q
ITU-T Series R
ITU-T Series S
ITU-T Series T
ITU-T Series U
ITU-T Series V
ITU-T Series X
ITU-T Series Z
ITU - International Telecommunications Union
Iu-CS Interface (Circuit Switched)
Iu-PS Interface (Packet Switched)
Iu Interface
Iu Protocol
Iub Interface
IUC - Interval Usage Code
Iur Interface
IVR - Interactive Voice Response
IWF - Interworking Function
IXP - Internet Exchange Points