I
Iur
The interface between RNCs in a UMTS network
Iups
The connection between the RNC and the packet switched network in a GSM/GPRS/UMTS network
Iucs
The connection between the RNC and the circuit switched network in a GSM/GPRS/
UMTS network
I-ETS
Interim European Telecommunications Standard
I-mode
A service developed by Japanese operator NTT DoCoMo, I-mode delivers a huge range of services to subscribers and has proved enormously popular with some 30 million regular users. The revenue sharing model used for I-mode is being adopted by other operators as the basis for the new services enabled by GPRS and 3G
IMEI
International Mobile Equipment Identity
IMSI
International Mobile Subscriber Identity; an internal subscriber identity used only by the network
IMT-2000
The family of third generation technologies approved by the ITU. There are five members of the family: IMT-DS, a direct sequence WCDMA FDD solution IMT-TC, a WCDMA TDD solution IMT-MC, a multicarrier solution developed from cdma2000 IMT-SC, a single carrier solution developed from IS-136/UWC-136 IMT-FT, a TDMA/TDD solution derived from DECT
IN
Intelligent Network
INAP
Intelligent Network Application Part
Internet
A loose confederation of autonomous databases and networks. Originally developed for academic use the Internet is now a global structure of millions of sites accessible by anyone
Intranet
A private network which utilises the same techniques as the Internet but is accessible only by authorised users
IP
Internet Protocol
IPR
Intellectual Property Rights
IPv6
The next generation of IP addressing designed to replace the current system IPv4 which uses a 32 bit address code which limits the number of possible addresses. IPv6 uses a 128 bit code ensuring that the possible number of IP addresses will be virtually limitless
IrDA
Infra red Data Association
Iridium
A low earth orbit satellite communications system developed initially by Motorola.
IS-54
The first evolution in the USA from analogue to digital technology. Used a hybrid of analogue and digital technology, superseded by IS-136
IS-95
Cellular standard know also as cdmaOne
IS-136
Cellular standard also known as TDMA or D-AMPS
ISDN
Integrated Services Digital Network
ISO
International Standards Organisation
ISP
Internet Service Provider
ITU
International Telecommunications Union
ITU-R
ITU Telecommunications Radio Sector
ITU-T
ITU Telecommunications Standardisation Sector
IWF
Interworking Function
The Consumer Mobile Glossary
Infrared data port
A facility on a mobile phone to allow information to be exchanged with other devices e.g. a PC using infra red technology
