Just got my phone connection switched from AT@T to Time Warner VOIP. I didn't have caller ID with my AT@T, but do have it now with TW. The TW tech tested it by calling my number from his cell, and the ID came up on my home phone without problem. After he left I changed the setting on the 722, to enable the on screen caller ID function. I called my home phone with my cell, and no caller ID on the screen. I have a phone line connected to the 722, and it has been performing the updates with no problem, so I assume that part is OK. I called DN service and a very nice lady walked me thru her script of steps to troubleshoot the problem, but nothing worked. Any ideas, besides replacing the 722?