představa fungování ALG • INVITE sip:destino@example.com SIP/2.0 • Via: SIP/2.0/UDP 192.168.1.33:5060;branch=z9hG4bKjyofoqmp • Max-Forwards: 70 • To: <sip:destino@example.com> • From: "Iñaki" <sip:ibc@example.com>;tag=nrrrx • Call-ID: xetazdjyktlpsfo@192.168.1.33 • CSeq: 800 INVITE • Contact: <sip:ibc@192.168.1.33:5060> • Content-Type: application/sdp • Allow: INVITE,ACK,BYE,CANCEL,OPTIONS,PRACK,REFER,NOTIFY,SUBSCRIBE,INFO,MESSAGE • Supported: replaces,norefersub,100rel • User-Agent: Twinkle/1.1 • Content-Length: 312 • INVITE sip:destino@example.com SIP/2.0 • Via: SIP/2.0/UDP 192.0.2.200:12345;branch=z9hG4bKjyofoqmp • Max-Forwards: 70 • To: <sip:destino@example.com> • From: "Iñaki" <sip:ibc@example.com>;tag=nrrrx • Call-ID: xetazdjyktlpsfo@192.168.1.33 • CSeq: 800 INVITE • Contact: <sip:ibc@192.0.2.200:12345> • Content-Type: application/sdp • Allow: INVITE,ACK,BYE,CANCEL,OPTIONS,PRACK,REFER,NOTIFY,SUBSCRIBE,INFO,MESSAGE • Supported: replaces,norefersub,100rel • User-Agent: Twinkle/1.1 • Content-Length: 312