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- Nov 1, 2007
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I have 3CX PBX behind a NAT device and SIP phone that is located on another network be hind a NAT device. I have configured the firewall to forward ports 5060 UDP, 9000-9007 UDP 7000-7000 UDP to the 3CX PBX. I have configure the stun settings on the SIP phone to stun2.3cx.com.
the problem is that phone registered with the PBX but I get no audio when I make calls. what other settings are neccessary to for this case to work
the problem is that phone registered with the PBX but I get no audio when I make calls. what other settings are neccessary to for this case to work