Patent ID: 7751856

Claim:
An apparatus comprising: media data processing circuitry configured to perform at least a first data processing algorithm on media data in the apparatus; and accessory interface circuitry configured to provide a message for transfer to a mobile telecommunications terminal, said message comprising a specification identifying the at least a first data processing algorithm performable by the media data processing circuitry included in the apparatus, wherein the media data processing circuitry is configured, following disablement of further media data processing circuitry configured to perform at least a second data processing algorithm on media data in the mobile telecommunications terminal, to perform the at least a first data processing algorithm on first media data in place of the performance of the at least a second data processing algorithm on the first media data in the mobile telecommunications terminal, and wherein the at least a first data processing algorithm and the at least a second data processing algorithm are echo-canceling and/or frequency equalizing algorithms.