[asterisk-users] Can't connect to voip provider over NAT

[Landy Landy]

Hello.

I'm trying to test an Asterisk server by using a VOIP provider for international calls but, I'm having problems trying to get my server communicate with theirs. I don't know if I'm having all these issues becuase I'm behind NAT or what. I have the following in my server's sip.conf:

[provider]
type=peer
host=<theprovider's server>
username=<username>
secret=<password>
port=5060
canreinvite=YES
dtmfmode=rfc2833

I've tried opening all ports to test this but, still doesn't work. Now, I need to know which especific ports to open in order to allow sip flow correctly. Also enabled/opened ports 5060 - 5070 and the rtp: rtpstart=10000
rtpend=20000

Don't know what else to try. Please help.

Thanks in advanced for your help.