What is Real-Time Protocol (RTP)

Extension of UDP

  • port no., ip addr

  • payload type ident

  • packet seq no.

  • time-stamp

  • Does not ensure timely data delivery / quality of service.

  • RTP is implemented at end systems.

  • routers do not make special effort to ensure RTP packets arrive at destination in order.

  • RTP header

    • payload type - 7 bits
    • seq no. - 16 bits
    • time stamp - 32 bits
    • sync source id - 32 bits
    • misc fields