If country is USA, telephone number should be in the format 555-555-5555
If country is USA, extension should be of the format 5555
If country is USA, fax should be of the format 555-555-5555
If country is USA, telephone number should be in the format 555-555-5555
If country is USA, extension should be of the format 5555
If country is USA, fax should be of the format 555-555-5555