| 摘要 |
<p>Data signals (e.g DTMF tones) tranmsitted on a telephone call between a customer terminal (1) and a call centre platform (4) are diverted at the call centre platform 4 to a secure payment system 3 such that the call centre 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 centre 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 the user to return over the other. The customer can continue to talk to the call centre 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 verifictation details are) over a separate link 43 between the call centre platform 4 and security system 3.</p> |
