Advanced Telecommunication Systems / Fusion Communications Corporation / Trusted Networks / Ohmsha Ltd. / Iwatsu Electric Co. Ltd. / NTT Communications Inc. / Yamaha Corporation / WIDE Projects / VSTF / NEC AccessTechnica Ltd. / Oki Electric Industry Co. Ltd. / Asgent Inc. / Softfront / JPNIC / Genome Informatics Corporation / KDDI Corporation / NTT Group / NTT East Corporation / Japan Telecom Co. Ltd. / FUJITSU Ltd. / Cisco Systems Inc. / NTT West Corporation / INTEC Web / Hitachi Communication Technologies Ltd. / IETF SIP Working Group / /
Country
Japan / /
Currency
STD / / /
Event
Business Partnership / FDA Phase / /
Facility
National Institute of Information / Terminal Equipments / University of Tokyo / CampusNet SIP terminal / SIP terminal / /
IndustryTerm
multimedia services / telephony / media types / real-time communications / Internet ESAKI Hiroshi / private network / application-layer signaling protocol / proxy server / Internet YAMAMORI / Internet Protocol / software quality / Internet Mail Extensions / private networks / telephony service / /
Organization
Telecommunication Technology Committee / Research Center / National Institute of Information / University of Tokyo / VoIP/SIP Interoperability Task Force / Task Force / Graduate School / Internet Engineering Task Force / International Telecommunication Union / Collaborative Research Management Department / /
Person
Hiroshi / Henry Sinnreich / Alen B.Johnston / /
Position
Researcher / Professor / /
Product
Real-Time Applications / /
Technology
ITU-T protocol / Telecommunication Technology / IP telephony / application-layer signaling protocol / Session Description Protocol / VoIP system / Communications Technology / instant messaging / ISDN / PSTN / SIP technology / Session Inisiation Protocol / User Datagram Protocol / Internet Protocol / proxy server / ASCII / video conferencing / ISP / HTTP / Session Initiation Protocol / H.323 / simulation / VOIP / PBX / /
4-4 Approach of VoIP/SIP Interoperability Task Force YAMAMORI Masafumi and ESAKI Hiroshi In this research, it achieved interoperability of VoIP systems using SIP in both Multi-vendor and Multi-provider environments, and