Over the Thanksgiving holiday, I noticed my remote extension at home had the orange BLF on my Cisco SPA525G2 on the wire. I first figured our external drive for backups screwed up the UEFI reboot on our Hyper-V 2012 R2 server at the office.. again... but no. Fine.. rebooted my Craptiontec wifi router from Frontier on the FIOS and restarted the phone after all that came up. Today.. the logs are still showing a consistent registered/unregistered pair. It stays registered for about 210 seconds.. ish.. and back. I do leverage the SIP ALG feature on that router.. which was fine in the past. I haven't toyed with the config in months. Before I throw a Wireshark session to capture traffic from my home office to our 3CX host box (VM..), any ideas where it broke? My money is on that CraptionTec. Hmm.. maybe I'll try a second handset.. or a softphone without tunnel. Any takers?