H.323 Protocol Suite & Ports

• Signaling

• • H.245 - Call Parameters - Dynamic TCP
  • H.225.0
  • • Q.931 - Call Setup - TCP 1720
    • RAS - UDP 1719
  • Audio Call Control - TCP 1731
  • RTCP - RTP Control - Dynamic UDP

• Media

• • RTP - Audio - Dynamic UDP
  • RTP - Video - Dynamic UDP