(1) Where presentation of calling line identification is offered by an undertaking, the undertaking shall -

(a) offer the calling user the possibility, using a simple means and free of charge, of preventing the presentation of the calling line identification on a per call basis. The undertaking shall offer the calling subscriber this option on a per-line basis,

(b) offer the called subscriber the possibility, using a simple means and free of charge for reasonable use of this function, of preventing the presentation of the calling line identification of incoming calls, and

(c) where the calling line identification is presented prior to the call being established, offer the called subscriber the possibility, using simple means, of rejecting incoming calls where the presentation of the calling line identification has been prevented by the calling user or subscriber.

(2) Where presentation of connected line identification is offered, the undertaking shall offer the called subscriber the possibility, using a simple means and free of charge, of preventing the presentation of the connected line identification to the calling user.

(3) Paragraph (1) (a) also applies with regard to calls to third countries originating in the European Union.

(4) Paragraph (2) and paragraph (1) (b) and (c) also apply to incoming calls originating in third countries.