Xfinity blocking VoIP service?
My residential VoIP service stopped working since xfinity agent resetted my internet a month ago. My VoIP service privider (iTalkBB) uses a Cisco SPA122 ATA box to connect to the internet. The Cisco SPA122 ATA box just won't connect to the internet since the xfinity agent resetted my modem or network. I try touble shooting it with VoIP service privider iTalkBB tech support and had them replaced the VoIP ATA hardware two times and still cannot connect. Tried using the same VoIP ATA hardware on my friend's house which is also xfinity internet and it works. It just doesn't work in my specific network. Please help.