Interim Standard 95

What Does Interim Standard 95 Mean?

Interim Standard 95 (IS-95) is a second generation (2G) mobile telecommunications standard based on code division multiple access (CDMA) technology, which guarantees multiple access when sending voice and data between mobile phones and cell sites. IS-95 operates in the 800 MHz and 1900 MHz frequency bands.

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IS-95 is also known as TIA/EIA-95. It is marketed under the brand name CDMA One (cdmaOne).

Techopedia Explains Interim Standard 95

IS-95 is the first Qualcomm standard under CDMA digital cellular technology, but the term generally applies to a protocol revision (P_REV=1) that was developed by the Telecommunications Industry Association (TIA).

IS-95 was launched with the interoperability advantage of 1G (first-generation analog cellular network), which was IS-95’s predecessor. If an interoperation option between IS-95 and an analog network exist, the latter standard’s robust network infrastructure has an edge – even against its counterpart, Global System for Mobile Communications (GSM).

IS-95 base stations and handsets are data packet capable, and the IS-95 network uses IP based equipment. This infrastructure provides a high degree of compatibility for network operators implementing high-speed data services and allows network operators to evolve to third-generation (3G), which is an established IP-based standard.

Another advantage of an IS-95 network is IP gateway incorporation, or Interworking Function (IWF), which receives data from mobile phones in Point-to-Point Protocol (PPP) format. However, the IWF assigns a temporary IP address for that session, which provides flexibility to the IS-95 network infrastructure because it can incorporate any manufacturer’s standard router into the IWF.

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Margaret Rouse
Technology Expert

Margaret is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical business audience. Over the past twenty years, her IT definitions have been published by Que in an encyclopedia of technology terms and cited in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine, and Discovery Magazine. She joined Techopedia in 2011. Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages.