small logo SIP FOR LEGACY CLASS-5


WHY SIP?

SIP versus H323 and MGCP

SIP has a number of advantages over previous VoIP protocols:

  • The SIP "language" is similar to HTTP. It is highly flexible and extensible.
  • SIP is "agnostic" as to the service being provided - plain telephone call, video conference, SMS, etc.
  • SIP only needs a simple network architecture to be useful. In fact, two endpoints on an IP network are all that is needed to place an IP telephone call.
  • SIP call setup times are inherently fast, with relatively few messages needed.

SIP APPLICATIONS

IP-BRIDGE