cisco 1921 let sip traffic pass through

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
lion1440Asked:
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lion1440Connect With a Mentor Author Commented:
How do I close the case?
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Matt VCommented:
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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lion1440Author Commented:
no, the IP inspection is not turned on

dio you need a sample of the logs?
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Matt VCommented:
I would create a rule then

ip inspect name VOIP sip

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

ip inspect name VOIP sip

And apply it inbound on your LAN interface.
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lion1440Author Commented:
ok I will try that and get back to you ASAP
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lion1440Author Commented:
we solved the problem but not with your suggestions

thanks anyway
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lion1440Author Commented:
we solved the problem by ourselves
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swenwulfCommented:
Would be nice to a) show part of the config and b) reveal how you "solved" the problem.
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