[asterisk-users] one way RTP using NAT

Hector Quiroz mendiburu at gmail.com
Fri Nov 2 15:01:13 CDT 2007

I'm having a problem with my asterisk, trying to connect to a CISCO 2840 IOS12.x
ASterisk is behind firewall NATing, when it do the handshaking for
RTP, it sends his internal IP instead of sending the external one.
How can I tell the asterisk box, to modify that and send the external IP?
I tryied with Sip.conf's externip=xxxx and localnet=xxxx, nat=yes
Nothing seems to change the contact field on SIP protocol going out
from the asterisk box..


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