I know when you read that subject everyone thinks NAT, but that isn't the
case here. Incoming calls get 2 way audio, but outbound calls do not have
incoming audio. below is the flow
callee --> asterisk --> firewall/router --> provider
Callee is firewalled, but not NAT. callee is on the same subnet as the
asterisk box. Asterisk box has been completely excluded from the firewall
rules, and all traffic is being passed to it. Provider says everything is
good on their end.
Incoming calls work fine.
Here is the config from sip.conf for the provider:
[general]
context=incoming
srvlookup=yes
canreinvite=no
videosupport=yes
qualify=yes
; trunk links
[provider]
type=friend
nat=never
host=123.123.123.123
disallow=all
allow=ulaw
dtmfmode=auto
context=dids-inbound
canreinvite=no
Thanks
Miles
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