1. setup gnugk on NAT computer as proxy
2 ATA186 behind NAT registers to Gnugk
3. make a call to a gateway on public IP, if the callee answers the phone, get two way voice, but no ring before answer.
4 test by openphone , openphone can get ring.( if put ata186 on a public IP, it can get ring too)
are there any solution for ATA 186 to get ring before answer?
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