Cisco 7604 Configuration Manual page 501

Catalyst 6500 series switch and cisco 7600 series router firewall services module configuration guide using the cli

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Applying Application Layer Protocol Inspection

Figure 22-15

for 4xx/5xx/6xx SIP messages. If 200 OK is not received, the media connection is cleared after the

timeout sip-disconnect occurs.

It is possible to extend the timeout for provisional responses. The timeout for pinholes receiving 1xx/2xx

responses is configurable, or configured based on the EXPIRE field. When the EXPIRE field exists in

the SIP INVITE message, and is less than 30 minutes, the timeout for pinholes for receiving 1xx/2xx

responses is set to the EXPIRE field value. If the EXPIRE field value in the SIP INVITE header is greater

than 30 minutes, the timeout for provisional responses is set to 30 minutes. In the absence of the EXPIRE

field in the SIP INVITE message, the timeout for provisional responses is set to the value configured

using the timeout sip-invite command.

Catalyst 6500 Series Switch and Cisco 7600 Series Router Firewall Services Module Configuration Guide using ASDM

Media Connection Clear on 4xx/5xx/6xx SIP Messages

Firewall Service Module

180 ringing with SDP

4XX response

Media CONN entry is

tear down after receiving

Error(4xx-6xx) response

22-15, the media connections are cleared immediately when 200 OK is received in response

Media CONN entry

generate on FWSM

Media CONN entry

existing time

SIP Inspection

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