SUELO NO URBANIZABLE DE INTERES AGRICOLA. SNU-IAg

not always transmitted. See also IMEISV and MEID

IMEISV IMEI with Software Version Number. Composed of TAC + FAC + SNR + SVN

IMGI Inernational Mobile Group Identity

IMM See IM

iMode Japanese (NTT DoCoMo) wireless internet access system. See cHTML IMRN IP Multimedia Routing Number

IMS IP Multimedia Subsystem. An All-IP wireless system, where data, voice and signaling are all carried as IP packets.

IMSI International Mobile Subscriber Identity. Formerly called International Mobile Station Identity. Based on the ITU-T E.212 numbering plan. Composed of MCC MNC and MSIN. The only subscription identifier used by GSM and the future subscription identifier for CDMA.

IMSI_M cdma2000 MIN-based IMSI.

IMSI_O Operational value of IMSI used by a cdma2000 MS. Either IMSI_M or IMSI_T

IMSI_O_S The last 10 digits of IMSI_O. Used for compatibility with older CDMA systems that relied on the 10 digit MIN.

IMSI_T True IMSI used by cdma2000. Compare with IMSI_M. See IMSI_O IMT-2000 International Mobile Telecommunications for the year 2000 (or

thereabouts)

IMTS-2000 The ITU 3G initiative. It does not define specific protocols, but just the performance goals for them, such as bandwidth. Specifications are being developed by 3GPP and 3GPP2.

IMUI International Mobile User Identity

IN Intelligent Network. Wireless equivalents are WIN and CAMEL INAP IN AP. The IN messaging protocol

INC Industry Numbering Committee (for the NANP)

INI IRM Network Identifier. The first four digits that uniquely identifies a carrier HLR

INM Integrated Network Management INN Internal Network Number

Integrity Preventing information (e.g. a data transmission) from being manipulated. This can be accomplished by putting a MAC on each

message.

Interface A connection between two network elements. Compare with Protocol Interleaving Mixing of bits upon transmission according to a simple pattern (e.g.

organizing bits in a matrix by columns and transmitting by rows) to somewhat randomize the output and protect from burst of noise on the RF channel

Intermodulation

Interference RF interference within a channel generated as one or more intermodulation products within the receiver itself, typically as the result of the presence of very strong signals in adjacent bands. Contrast with Systemic Interference and Non-systemic Interference

Intserv Integrated Services

INVOKE Message sent to initiate an TCAP transaction

IOS Inter-Operability Standard. A version of the TIA/EIA-634 A-interface that enhances inter-vendor compatibility

IOT Inter-Operator Tariff

IOTA IP-based Over-the-Air configuration management IP(1) Intelligent Peripheral

IP(2) Internet Protocol

IP-M IP Multicast

IPCP PPP IP Control Protocol

IPDR Internet Protocol Detail Record. An internet oriented record for carrying charging details for services. Compare with CIBER, BAF, TAP, EMI

IPHC IP Header Compression. Provides compression (and decompression) of TCP, UDP and IP headers.

IPLMN Interrogating PLMN

IPoA IP over ATM

IPR Intellectual Property Rights (e.g. patents). See DRM.

IPSEC IP Security. Compare with SSL (for TCP). See IETF RFC 2401. Also spelled IPSec

IPv4 IP Protocol Version 4. The version currently in use in the internet, using 32 bit addressing. See also IPv6.

IPv6 IP Protocol Version 6. The version that is supposed to provide significantly larger and more powerful addressing, and eventually replace IPv4. Don’t hold your breath

IPv6CP IPv6 Control Protocol IR(1) Intelligent Roaming IR(2) Infra-Red

IR(3) Initialization and Refresh Packet. RFC 3095 IRA International Reference Alphabet

interface that prioritizes systems that may be detected by a phone based on carrier agreements

IREG GSMA International Roaming Experts Group. IRG IFAST International Roaming Guide

IRI Intercept (i.e. LAES) Related Information

IRM International Roaming MIN. A mobile subscription identifier beginning with the digit 0 or 1 to avoid conflict with NANP MINs

IRP Integration Reference Point IRS Internet Reachability Service IS TIA Interim Standard

IS-124 Wireless call detail and billing record format for online transfer IS-136 Second generation TDMA air interface standard

IS-2000 cdma2000 air interface standard. A successor to TIA/EIA-95-B IS-41 Wireless intersystems operation standard. Now called TIA/EIA-41 IS-41-C IS-41 Revision C (Intersystem Operations Standard)

IS-54 First generation TDMA Radio Interface standard IS-634 See TIA/EIA-634

IS-637 CDMA short message service standard IS-683 see TIA/EIA-683

IS-756 A TIA standard for WNP

IS-801 TIA/EIA interim standard for CDMA MS-assisted position determination

IS-91 Most advanced analog air interface standard (including NAMPS) IS-93 Wireless-PSTN interface standard

IS-95 cdmaOne CDMA air interface standard

ISAKMP Internet Security Association and Key Management Protocol ISC International Switching Centre

ISDN Integrated Services Digital Network. PSTN utilizing SS7 interfaces ISDN-UP See ISUP

ISI Inter-Symbol Interference

ISIM IMS SIM

ISIS Intermediate System - Intermediate System IP routing algorithm. ISM Industrial, Scientific, Medical frequency band (2.45-2.5 GHz).

Available around the world for unlicensed applications, generally using low power and short distances

ISMA Interference Sense Multiple Access

ISO International Organization for Standardization

ISO-8859-1 The most common 8-bit character set used for web pages. An ISO/IECstandard. Also see UNICODE

isotropic Radiating equally in all three dimensions (as opposed to directional, with energy being focussed more in some directions than other). ISP Internet Service Provider

ISUP ISDN User Part. SS7 signaling between switches. Standardized in ANSI T1.113 and ITU-T Q.760-769

ITAR US International Traffic in Arms Regulations. These rules used to govern export of encryption technology in the US and, to some extent, in Canada. Replaced by EAR

ITN Individual Telephone Number Pooling. Phone numbers can be assigned to carriers one at a time, instead of in blocks of 1,000 or 10,000

ITS(1) Intelligent Transportation System (“Smart Highways”) ITS(2) IP Transport Subsystem

ITU International Telecommunications Union ITU-R ITU - Radio Communications Division ITU-T ITU - Telecommunications Division

Iu Interface between an RNC and CN (MSC, SGSN or CBC). Support for this within GSM has been suggested, but is unlikely. See also Iub, Iur. IUA ISDN Q.921 User Adaptation Layer

Iub A 3GPP interface between an RNC and a Node B. See Iu, Iur.

Iur A 3GPP interface between two RNCs. This is a logical interface, and the RNCs may not be connected by point-to-point physical links. See Iu, Iub.

IV Initialization Vector. A 24-bit session-specific key for WEP IVR Interactive Voice Response

IVRU IVR Unit

IWF Inter-working Function. Used for wireless data interworking between digital mode data and analog (e.g. modems)

IXC Inter-eXchange Carrier. A carrier licensed to provide long distance services

J