Comcast failure in porting a VOIP phone number

I was recently sold triple play service. When I asked them to port my VOIP phone number from Ooma to their voice service, I was told that even though Comcast service is also based on VOIP, it is treated as a land line service and cannot port numbers from a different Rate Center.

Was I given outdated information or is Comcast really stuck in the 70's?