VoIP Protocols: SIP and H.323
This chapter includes the following main topics:
Overview of SIP: This section provides a brief history of SIP and describes its functional components, the different methods commonly used in SIP, and the process by which a call is set up and torn down.
Introduction to SDP: This section examines Session Description Protocol (SDP) fundamentals and describes the offer/answer framework.
Overview of H.323: This section covers H.323 basics, including the various components typically included in H.323 networks and the flow for a typical H.323 call.
This chapter covers the following CLACCM 300-815 exam topics:
1.1 Troubleshoot these elements of a SIP conversation
1.1.a Early media
1.1.c Mid-call signaling (hold/resume, ...