VoIP Architecture (H.323, SIP and MGCP) Unit 6
Objectives • Describe and explain MGCP, H.323 and SIP protocols. • List the 3 various architectures used for VoIP. • Describe the common H.323 VoIP Services. • Describe the common H.323 architecture components. • Explain the function of a gateway. • Explain the function of a gatekeeper. • Describe signaling between gateway and gatekeeper. • Explain the gatekeeper directory function and operation. • List VoIP Application Servers. • Describe SIP network Architecture, its components, gateways and servers. • Describe SIP signaling. • Explain how H.323 and SIP networks interconnect. • Explain the architecture of a softswitch. • Describe a Softswitchs’ signaling, and gateways.