Hi,
So trying to get the teleworker phone working and forwarded the ports below. We are able to make calls, Receive calls, add phones. call remote nodes.
but the audio doesn't work right. When we boot up the phone it works for a few minutes then no audio. We hear dial tone but can't hear other person. When we call the auto attendant as well there is no audio. Rebooting the phone fixes it for a few minutes.
We worked with Sonicwall and ran packet monitor and did not see any dropped packets so we are kinda at a loss as to what to try next.
We have the phone setup as NAT for the Address Type, We have the Public IP in the IP settings and the IP Connections. Any thoughts on this behavior?
3998-3999 TCP
4000 and 44000 TCP (If you want to administer the system remotely)
5004-5007 UDP Range
5060 UDP (Not needed for IP endpoints but sometimes needed for SIP Trunks)
5566 TCP
5567 UDP
5570 TCP
6004-7039 UDP Range
6800-6802 TCP Range
20001 UDP
50098-50508 UDP Range