was calling a party with a voice data modem the called party could use the voice data connection to send data back to a tca that is included on the call once the tca is activated preferably it prompts for data 14 for example to support credit card transactions the system may say 34 credit card processing is now on line please enter a 16 digit credit card number 34 preferably either the caller or called party may enter the credit card number for example if the caller is not calling from a touch tone telephone then the called party may enter the credit card number 16 the ability to allow either party to use a touch tone telephone to enter data in this case the card number is unique to the present invention in an alternative embodiment voice recognition may be used to enter the credit card number and all additional data in the next step the tca verifies the data entered as needed 18 for example if the data entered was the credit card number the tca may verify that the number was of correct length and mathematical representation to ensure correct data entry if additional data is necessary to complete the transaction 20 the tca prompts for the needed data 14 for example.