My understanding from reading, waiting, and letting it sink in is that when GV incoming calls are forwarded to an IPkall DID, the caller id is screwed up. It supposedly has something to do with how well (or not) GV forwarding plays with IPkall DIDs. They sometimes don't play well together. If someone calls directly to the IPkall number, caller id usually works. If someone calls the GV DID, which then forwards to the IPkall DID, the CID is stripped (sometimes) and replaced with the 206-682-0185.