I have a question for you:
- "SIP doesn't work behind NAT very well"
Do you agree with this sentence?
Complete and utter crap (if you assume a few things).
SIP w/NAT works just fine if: Asterisk itself is not behind NAT You do not want to use SIP reinvites You use some form of NAT Keepalive* You use nat=yes in sip.conf Your NAT router is not SIP aware
If your NAT router is SIP aware then you can 1) turn off it's SIP awareness and treat it like a dumb NAT router or 2) enable it's SIP awareness and turn off nat=yes in sip.conf. A SIP aware router might make reinvites work of both SIP clients have a SIP aware router.
* You can keep your NAT alive by using a registration of 60 seconds on the NAT device, or use qualify=yes in sip.conf, or use the NAT Keepalive features of your SIP device.
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