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C-56
SIP IP Phone to SIP IP Phone: Call Return
SIP IP Phone to SIP IP Phone: Call Return
Call Scenario Figure C-20 illustrates the following call scenario:
• User A dials *69 to determine the last number that was called, User B
• User A calls User B
Figure C-20. SIP Phone to SIP Phone: Call Return
Call Flow Diagram Figures C-21, C-22, C-23 and C-24 show a call return request leading to an
established call between two on-network SIP IP phones.
User A
Calling Party
User B
Called Party
Redirect Server
User Agent Call Return
Marshal Server Feature Server
VOCAL System