No response to REGISTER after PC reboot

[jhearty]

I have a new installation in a local network with a Cisco ATA186 and an X-Lite softphone. They Registered fine when first setting up the server. I had a power outage a day later, and the phones no longer Register. Wireshark on the same PC as the SIP Server shows the REGISTERs comming in, but no response going out.

 

[RobLloyd]

Did you check the firewall? I've seen first time installs work great. Once you reboot then it gets blocked by the firewall.

 

[jhearty]

Good idea. I didn't see it replying immediately after allowing UDP 5060 in the Windows firewall. I dummy updated the listen port in the general settings and restarted the PC and Registrations worked. Not sure which action fixed it. Thanks for the help.