Comcast Users

[N9MD]

Funny you should ask. I was in my Boca Raton residence over the Xmas-NewYear break. While there I opened a new Comcast broadband account. Using my PAP2T-NA adapter, I experienced some curious results in attempting to register a variety of VoIP providers --- all of which work on the PAP2T-NAs in my New Jersey locations, indicating that my registration data is correctly inputted.

I refer to the Registration State on the Info page.

VOIPo - Offline

AxVoice - Offline

Free/Talk/CallDigits - Offline

FreeWorldDialUp - Offline

ViaTalk - Offline

GizmoProject - Online

StanaPhone - Online

CallCentric - Online

When I purposely enter an incorrect password for each of the "Offline" providers, the Registration State message changes to "Can't connect to login server".

I always use SIP Port 5060 for Line 1 and 5061 for Line 2. But changing to other SIP ports within the 5050 to 5099 range gave similar results.

All of this would seem to indicate that my PAP2T is reaching the Comcast server -- via my LinkSys WRT54G Router and the Comcast CableModem -- but the Line 1 and Line 2 lights are out for the "Offline" providers and glow brightly with the "Online" ones. The Power and Internet lights are on --- with no red lights.

So, is Comcast blocking ports? How could that be if some providers are useable on Port 5060 and others are not?

[Unfortunately, I am back and forth between NJ & FL so I can't always do "in-depth" experimenting with the VoIP stuff when I'm in FL. Mainly, because the 80 degree blue sky "winter" weather makes my wife force me onto the golf course daily.]

[VOIPoTim]

So, is Comcast blocking ports? How could that be if some providers are useable on Port 5060 and others are not?

[Unfortunately, I am back and forth between NJ & FL so I can't always do "in-depth" experimenting with the VoIP stuff when I'm in FL. Mainly, because the 80 degree blue sky "winter" weather makes my wife force me onto the golf course daily.]

We don't think that Comcast is block ports per say, but it's obvious that they are playing with traffic and this seems to be causing some intermittent problems. We have a workaround to avoid this, but I want to get some more stats on how many people see random issues with them.

For once, I actually agree with Brendan on something.