user devices / control protocol / network-level multicast protocols / end systems / telephone service / unsupported media / Internet context / analogous devices / voicemail server / media levels / telephone users / telephony signaling protocol / telephone services / Internet telephony signaling / latter server / applicationlevel devices / Internet protocols / Internet telephony / telephony / legacy networks / Internet services / Internet telephony request / dynamic routing protocols / expiration-related services / Internet telephony network / telephony environment / telephone network / Internet telephony Several varieties / elaborate services / Internet Service Provider / Media packets / Internet Telephony Jonathan / Internet model / real-time communications streams / shared-bandwidth communications channels / camp-on services / Internet telephony protocols / telephony protocols / Internet characteristics / Internet telephony The advantages / carrier selection / Internet Telephony End system / communications media / phone bank / telephone end points / Internet environment / media sessions / Internet telephony server / fixed-line device / telephone networks / telephone-like services / Internet telephony addresses / media-stream-listening services / multimedia communications / Internet telephony sessions / presence protocol / Internet telephony signaling protocols / user-level certification services / web page giving alternate ways / Telephone carriers / Internet Telephony MAC address IP address SIP URL / circuit-switched telephone networks / Internet telephony environment / telephone addresses / media communication / multi-party telephone / proxy server / fixedrate communications / user location services / telephone / services / Internet telephony UNI / Internet telephony proxy server / Real-time control / Internet telephone addresses / network devices / Internet telephony deployment / low-level routing protocols / Internet telephony makes / inter-provider communications / media traverse / intermediate media gateway / web services / Internet telephony devices / /
Organization
Columbia University / International Telecommunications Union / Internet Engineering Task Force / /
Feature Interaction in Internet Telephony Jonathan Lennox, Henning Schulzrinne Columbia University [removed], [removed] Abstract. While Internet telephony aims to provide services at least equal to