412 is recognized as the area code for Allegheny County. This is pretty contained, and this makes sense to have the number being my Home phone line. This is because my 878 number will be the Cellular phone. This process will take a week for everything to work, and transfer. The advantage of this is people still calling the 412 number will likely reach me still as I am usually home. When I am not home, the SIP provider will collect the voicemail.
Once I acquire all of the telephone numbers I will want, I will contact everyone in my contacts, and let them know that until further notice, they should call my 855 number. This will forward to the Cellular and Home phones at the same time. This will assure that I can check daily for any changes, and make the appropriate changes. Once the changes take effect, I will contact everyone in my contacts, and let them know of the finalized settings. The 412 number will ring the HD3, and will use the VOIP as the carrier.