Infrastructure RequirementsIntegral Components of a VOIP SIP based architectureSIP GatewaysRegistrar ServerProxy ServerRedirect ServerApplication Server Adding Media ManagementDTMF( Dual tone Multi Frequency )TTS ( Text to Speech ) Developing SIP based applicationsBasic SIP methodsExtending SIP headersCall routing ScriptsSIP platform DevelopmentCollecting and Processing PCAPS NAT and DNS Near-end NAT traversal Far-end NAT traversalCDR Processing and BillingData Streams … Continue reading SIP VoIP system architecture basics