[header] How to process a credit card over the telephone [title] Decide to use a telephone processor. [step] Telephone credit card processing offers several advantages. You can process all visa, mastercard, american express, and discover from your phone. 
If you take your business to trade shows, or have a mobile business, telephone credit card processing is a useful solution, as you will not have to lug a terminal with you or find a secure connection. Because of this, it is perfect for contractors, delivery, craft shows, seasonal businesses, food service, home based businesses, and other small, mobile businesses.