HP-UX C SIP Stack Programmer's Guide (February 2008)

Working with Call-legs (Dialogs) 73
Call-leg re-INVITE (Modify) State Machine
MSG-SEND-FAILURE
STATE MACHINE
Figure 6-6 Call-leg Re-INVITE Message Send Failure State
Machine
MSG-SEND-FAILURE
S
TATE MACHINE WITH
N
ETWORK ERROR OR
TIMEOUT
Figure 6-7 Call-leg Re-INVITE Message Sent Failure State
Machine with Network Error or Timeout
REINVITE
SENT
REINVITE
MSG SEND
FAILURE
REINVITE
TERMINATED
REINVITE
ACK SENT
503 rcvd
DNS Continue DNS Giveup
DNS Resend
TERMINATED
DNSContinue )(
REINVITE
SENT
MSG SEND
FAILURE
REINVITE
DNS
Giveup