Cisco 7604 Configuration Manual page 499

Chapter 22 Applying Application Layer Protocol Inspection
Figure 22-13
In Figure
after the timeout sip-disconnect occurs.
Catalyst 6500 Series Switch and Cisco 7600 Series Router Firewall Services Module Configuration Guide using ASDM
OL-20748-01
Media Connection Clear on BYE Message
Firewall Service Module
UAC
INVITE
100 Trying
180 ringing
200 OK
Media CONN entry
generate on FWSM
CONN entry deletes on receipt
of 200 OK or after SIP disconnect
timer expires, whichever is earlier.
22-13, when 200 OK is not received for the BYE message, media connections are removed
(FWSM)
RTP
BYE
200 OK
Media CONN entry
existing time
SIP Inspection
UAC
22-83