| Term | Description |
I-ETS | I-ETS - Interim European Telecommunications Standard
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I-mode | 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
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IMEI | IMEI - International Mobile Equipment Identity. A unique serial number used on digital mobile phones.
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IMSI | IMSI - International Mobile Subscriber Identity; an internal subscriber identity used only by the network
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IMT-2000 | 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
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IN | IN - Intelligent Network
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INAP | INAP - Intelligent Network Application Part
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Infared port (IrDA) | Infared port (IrDA) - Allows cell phones, PDAs, and other devices to connect to each other for various purposes. Infrared is a wireless technology that uses a beam of invisible light to transmit information.
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Infrared data port | 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
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Internet | 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
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Intranet | Intranet - A private network which utilises the same techniques as the Internet but is accessible only by authorised users
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IP | IP - Internet Protocol
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IPR | IPR - Intellectual Property Rights
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IPv6 | 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
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IrDA | IrDA - Infra red Data Association
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Iridium | Iridium - A low earth orbit satellite communications system developed initially by Motorola.
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IS-136 | IS-136 - Cellular standard also known as TDMA or D-AMPS
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IS-54 | 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
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IS-95 | IS-95 - Cellular standard know also as cdmaOne
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ISDN | ISDN - Integrated Services Digital Network
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ISO | ISO - International Standards Organisation
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ISP | ISP - Internet Service Provider
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ITU | ITU - International Telecommunications Union
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ITU-R | ITU-R - ITU Telecommunications Radio Sector
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ITU-T | ITU-T - ITU Telecommunications Standardisation Sector
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Iucs | Iucs - The connection between the RNC and the circuit switched network in a GSM/GPRS/UMTS network
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Iups | Iups - The connection between the RNC and the packet switched network in a GSM/GPRS/UMTS network
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Iur | Iur - The interface between RNCs in a UMTS network
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IWF | IWF - Interworking Function
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