A method for filtering an original communication, being generated by a caller device toward a called device, and identified by an uncertified caller identity and by at least one certified caller identity. The method includes: verifying a condition satisfied if the uncertified caller identity and the at least one certified caller identity are different; and if the condition is satisfied, detecting expiry of a waiting duration following the verification, this duration being equivalent to the duration of at least one ring; and following the expiry and if no message is detected indicating the end of the original communication, presenting to the called device the original communication with at least one caller identity from among the uncertified caller identity and the at least one certified caller identity, the original communication not being presented to the called device before the detection.