Method, apparatus, proxy server and terminal for filtering out spam call

A detector for filtering out a spam call, comprising:

• a test database, configured to store test information;
• and
• a detection module, configured to transmit the test information to a calling terminal when receiving a call request from the calling terminal, determine whether feedback information corresponding to the test information and generated by the calling terminal in a one-key reply manner is correct, and determine the call request as a spam call request and filter out the call request if the feedback information is incorrect.

A detect device for filtering out a spam call, comprising:

• a transceiver, configured to receive a call request from a calling terminal;
• and
• a detector, configured to transmit test information to the calling terminal through the transceiver when the transceiver receives the call request, determine whether feedback information corresponding to the test information and generated by the calling terminal in a one-key reply manner is correct, and determine the call request as a spam call request and filter out the call request if the feedback information is incorrect.