We've had to switch several more comcast users back over to SIP7 today.

I have an open ticket for another comcast user who is suffering from various outbound calling issues. I'm leaving them on SIP for now, in hopes that support can resolve these issues. I may have to move them to SIP7 soon though, if no other solution can be found.

Interesting thing is that they have been using the regular SIP server for a fairly long time (a year or more) without issues, until this past week or two. Now they are suddenly having trouble like so many others.