My system was working fine until 2 weeks ago when I updated to V2.61, then it would only work when connected within the LAN. If I tried to connect from the WAN side, I got SIP Errors. After much effort and pulling of hair, I was able to restore operation by entering a DNS SERVER address on the IP SETTINGS page. I am using DHCP so this should not have been necessary. Afterward, I erased the entry and the system continued to function.
I don't know if this is an isolated occurrence, or perhaps a bug so I pass it along to the forum.
-Mike-
WA6ZTY