Cisco Systems 1.3.0 manual Via Gateway Called Party is Busy

C-28

SIP Phone	UA Marshal	Redirect Server	5300 Marshal	Cisco 5300	SIP
					Phone
16. ACK
					to
	17. ACK				Phone
			18. ACK
					via Gateway: Called Party is Busy

Figure C-12. Call Flow Diagram: SIP Phone to Phone: Called Party is Busy — Diagram 2