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cisco 1921 let sip traffic pass through

Posted on 2011-09-06
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Last Modified: 2012-05-12
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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Question by:lion1440
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LVL 22

Expert Comment

by:Matt V
ID: 36491463
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?
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Author Comment

by:lion1440
ID: 36495083
no, the IP inspection is not turned on

dio you need a sample of the logs?
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LVL 22

Expert Comment

by:Matt V
ID: 36495661
I would create a rule then

ip inspect name VOIP sip

And apply it inbound on your LAN interface.
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LVL 22

Expert Comment

by:Matt V
ID: 36495662
I would create a rule then

ip inspect name VOIP sip

And apply it inbound on your LAN interface.
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Author Comment

by:lion1440
ID: 36495750
ok I will try that and get back to you ASAP
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Author Comment

by:lion1440
ID: 36500134
we solved the problem but not with your suggestions

thanks anyway
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Accepted Solution

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lion1440 earned 0 total points
ID: 36500137
How do I close the case?
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Author Closing Comment

by:lion1440
ID: 36527903
we solved the problem by ourselves
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Expert Comment

by:swenwulf
ID: 37532733
Would be nice to a) show part of the config and b) reveal how you "solved" the problem.
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