Processing sensitive information over VoIP

A call processor processes Voice over Internet Protocol (VoIP) media which comprises sensitive information. The call processor receives first signalling stream from a first entity, creates a second signalling stream to a second entity, and forwards signals received from the first signalling stream to the second signalling stream. The call processor receives a third signalling stream from the second entity, creates a fourth signalling stream to the first entity and forwards signals received on the third signalling stream to the fourth signalling stream. The first signalling stream contains instructions to set up a VoIP media call containing first and second media streams between the first entity and the second entity such that media is transmitted over the media streams without intervention by the call processor. Aspects of the invention provide that the media comprises audio information. The call processor configured to receive a message from the second entity to redirect the media streams via the call processor. When sensitive information is included in the audio information the call processor is configured to modify the media to remove sensitive audio information received from the first or second entity before forwarding the audio information on to the respective first or second entity.