Advertisements I have an Edge Digital connected to Comcast Cable in Baltimore. The eight channels below correctly appear on the guide, but when I switch to them either in SD or HD, I only see an error message that says: "Channel Temporarily Unavailable contact vendor." All of these channels are in our TV package and can be seen from any set in the house connected to an X-finity/Comcast cable box. BBC World News Sundance Hallmark Drama Cooking Channel MTV2 Screen Pix Screen Pix Action Screen Pix Voice After many hours of hassling with Comcast Support, I reached a supervisor who said that the above channels were "ALL IP" channels and could be incompatible with the cable card, but the support supervisor could not explain what an "ALL IP" channel was or how it differed from any of the digital channels. It may mean that the channel is being delivered to Comcast in Mpeg4 format, but that is unlikely as Mpeg4 is only used for HD and not for SD and this problem, as stated above, occurs in both HD AND SD. Does anyone have any information about this topic. Has it been discussed in the forum in the past.