List of CDMA Terminology - I

I

IETF – Internet Engineering Task Force

IFAST – International Forum on ANSI-41 Standards Technology

IIF – Interworking and Interoperability Function

IMS – IP Multimedia Subsystem

IMSI – International Mobile Subscriber Identity

IMSI 11 12 – Same as MNC (Mobile Network Code)

IMSI S – Short IMSI, Mobile Identification Number

Inbound Roamer

Industry Organizations

INF – Industry Negative File

Interconnection

Inter-standard Roaming

IRM – International roaming MIN

IS-2000 - Superseded by TIA-2000

IS-41 - Superseded by TIA-41

IS-835

IS-856 - Superseded by TIA-856

IS-95

ISG – International Signaling Gateway

ISUP – Integrated Services User Part

ITU - International Telecommunications Union