cisco 1921 let sip traffic pass through

lion1440
lion1440 used Ask the Experts™
on
Hi

We have a brand new cisco 1921 that doesn;t want to let sip traffic pass through

Incoming calls can get in, but if we answer, it hangs up.  
Outgoing calls are fine as well as calls betweenphones on the internal network

I need some help
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Commented:
Sounds like the firewall is blocking the return RTP packets.  Do you have IP inspection turned on?  If so, do you have an inspect rule for SIP?

Author

Commented:
no, the IP inspection is not turned on

dio you need a sample of the logs?

Commented:
I would create a rule then

ip inspect name VOIP sip

And apply it inbound on your LAN interface.
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Commented:
I would create a rule then

ip inspect name VOIP sip

And apply it inbound on your LAN interface.

Author

Commented:
ok I will try that and get back to you ASAP

Author

Commented:
we solved the problem but not with your suggestions

thanks anyway
Commented:
How do I close the case?

Author

Commented:
we solved the problem by ourselves

Commented:
Would be nice to a) show part of the config and b) reveal how you "solved" the problem.

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