VoIP Network Integration with Legacy Services 
This module focuses on how we interface legacy
PSTN services with an H.323 network. First, we trace the steps involved in setting up and tearing down an H.323 call. Next, we explore how we can translate
Signaling System 7 (
SS7) interswitch signaling into packetized network traffic, carrying such advanced call features as call forwarding, calling and called party identification information, and
more...