Fully automatic credit card calling system

In a mobile cellular telephone having a key pad connected to a controller unit and a digital signal processor containing stored data and a tone detection unit, a method for using automatic credit card calling with the cellular telephone comprising the steps of:

• Step 1 originating a call over a telephone network for the calling card service provider using a previously stored calling card service provider access number;
• Step 2 sending the telephone number to the service provider;
• Step 3 activating the tone detection digital signal processing procedure and awaiting a tone signal response from the service provider to verify whether the desired telephone number is correct;
• Step 3A terminating the telephone call if an incorrect response is received;
• Step 4 sending the calling card number to the telephone network;
• Step 5 activating a tone detection digital signal processing procedure and awaiting a tone signal response from the service provider to verify whether the calling card number is correct;
• Step 5A terminating the telephone call if an incorrect response is received in Step 5;
• Step 6 automatically proceeding with the calling card call when all the telephone credit card call information has been determined to be correct.