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To: Eric L who wrote (17416)	12/18/2001 11:29:43 AM
From: Eric L	Respond to of 34857

re: Interoperability Testing of 3G Phones with IP header compression protocol In order for 3G to become universally accepted, every company must make sure its equipment works with products produced by other companies. That is where standards testing comes in. So far, Effnet said, Ericsson, Siemens and Nokia have been able to show that their phones meet the standards. >> Phone Giants Pass Standards Test On Road To 3G Dan McDonough, Jr. Wireless NewsFactor December 14, 2001 According to Effnet, the IP header compression protocol dramatically improved response times, error rates, and voice and image quality. Mobile phone makers Ericsson and Siemens have finished round two of technology testing for their 3G (third generation) wireless handsets, according to Sweden-based data technology company Effnet. The testing was conducted to determine whether the systems were interoperable using an IP header compression technology that tightens up data flow to a mobile phone. This technology is designed to allow the next generation of mobile handsets to receive small bits of data over a stretch of time. Data transmitted might include various forms of streaming media, VoIP (voice over IP) calls or video games, according to the companies. In order for 3G to become universally accepted, every company must make sure its equipment works with products produced by other companies. That is where standards testing comes in. So far, Effnet said, Ericsson, Siemens and Nokia have been able to show that their phones meet the standards. Up To Speed Co-chairs of the Internet Engineering Task Force (IETF) working group on robust header compression (ROHC) supervised the successful second round of testing, Effnet said. The IP header compression protocol dramatically improved response times, error rates, and voice and image quality. Most importantly, the systems were interoperable, according to the company. "Interoperability testing confirms that the standard is being implemented by multiple vendors, as intended," IETF ROHC working group co-chair Carsten Bormann said. "Mobile handsets manufactured by one vendor should work seamlessly with 3G infrastructure equipment manufactured by other vendors." This latest round of testing was conducted in Tucson, Arizona. The first round, which included Nokia, was completed in Southampton, UK, in August. The first round focused on basics of the technology, while the second round focused on the abilities of the new compression protocol. "Approving a common standard for header compression was the first step," Bormann said. "Insuring that the actual implementations operate effectively across vendor platforms requires an exhaustive series of tests, in which the leading vendors are participating." Clearing Hurdles To make 3G a reality, equipment makers must clear a good number of hurdles. One such hurdle is choosing a standard technology that frees bandwidth and ups spectrum efficiency. With lots of data getting tossed through the air, it is important that mobile devices do not choke on it and crash. "Leading suppliers to mobile network operators are aggressively pursuing header compression as a way to free valuable 3G bandwidth," IETF ROHC co-chair and Effnet co-founder Mikael Degermark said. Effnet said its interoperability tests are open to any vendor that has implemented the IETF 3095 header compression standard. << - Eric -