Comparison of H . 323 and SIP for IP Telephony Signaling

  • Ismail Dalgica, Hanlin Fangb, Bayfront Plaza, Santa Clara
  • Published 1999


ABSTRACT Two standards currently compete for the dominance of IP telephony signaling: the H.323 protocol suite by ITU-T, and the Session Initiation Protocol (SIP) by IETF. Both of these signaling protocols provide mechanisms for call establishment and teardown, call control and supplementary services, and capability exchange. We investigate and compare… (More)

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