a 2 line caller ID

By 2 line I mean, one that works on Line 1 & Line 2 NOT just a regular 2 line called ID. The only way I have been able to find one is located on a phone. If there is a 2 line business talking caller ID, that would be great {where it would display the #'s & names, also talking unless it was turned off by choice}. I would really appreciate a response. Depending on the CID itself if this message is answered, would depend on how much I pay for it but I will not pay "triple digit including S & H".