Importance

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Abstract

Data signals (e.g DTMF tones) transmitted on a telephone call between a customer terminal (1) and a call center platform (4) are diverted at the call center platform 4 to a secure payment system (3) such that the call center operative cannot intercept them. In order to verify that this has been done, the security system provides access to the user over a connection (23,230) independant of the connection (34,41) to the call center that allows the user to independently verify that the secure connection 34 has been made. This may take the form of returning the user's calling line identity (CLI) for the connection (34) over the independant connection (23/230) or, where CLI is not available, transmitting a one-time code over one of the links for the user to return over the other. The customer can continue to talk to the call center operative as only DTMF tones are diverted. The call center operative can confirm that the customer's details have been entered and verified by the security system (but is not told what the verification details are) over a separate link (43) between the call center platform (4) and security system (3).

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First Claim