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I

IEEE

Institute of Electrical and Electronics Engineers.

IETF

Internet Engineering Task Force. Technical subdivision of the Internet Architecture Board that coordinates the development of Internet standards.

IMS

The IP Multimedia Subsystem. An IP multimedia and telephony core network that is defined by 3GPP and 3GPP2 standards and organizations based on IETF Internet protocols. IMS is access independent as it supports IP to IP sessions over wireline IP, 802.11, 802.15, and CDMA packet data along with GSM/EDGE/UMTS and other packet data applications. IMS is a standard reference architecture that consists of session control, connection control, and an applications services framework along with subscriber and services data.

IMSI

The International Mobile Subscriber Identity. A unique subscriber identifier consisting of a three-digit Mobile Country Code (MCC), a two- or three-digit Mobile Network Code (MNC), and 10-digits-or-less Mobile Subscriber Identification Number (MSIN).

International Mobile Subscriber Identity

See IMSI.

IP

Internet Protocol.

IPv4

Implementation of the TCP/IP suite that uses a 32-bit addressing structure.

IPv6

Implementation of the TCP/IP suite that uses a 128-bit addressing structure.

IP Multimedia Subsystem

See IMS.

IP-SM-GW

IP Short Message Gateway.

ISO-639

International Standards Organization two-character letter code for the representation of names of languages.

ISP

Internet Service Provider.

ITU

International Telecommunications Union.

I-WLAN

Interworking Wireless LAN. A WLAN that interworks with a 3GPP system.


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