11.—(1) This regulation applies to incoming calls.
(2) Where a facility enabling the presentation of calling line identification is available, the provider of a public electronic communications service shall provide the called subscriber with a simple means to prevent, free of charge for reasonable use of the facility, presentation of the identity of the calling line on the connected line.
(3) Where a facility enabling the presentation of calling line identification prior to the call being established is available, the provider of a public electronic communications service shall provide the called subscriber with a simple means of rejecting incoming calls where the presentation of the calling line identification has been prevented by the calling user or subscriber.
(4) Where a facility enabling the presentation of connected line identification is available, the provider of a public electronic communications service shall provide the called subscriber with a simple means to prevent, without charge, presentation of the identity of the connected line on any calling line.
(5) In this regulation “called subscriber” means the subscriber receiving a call by means of the service in question whose line is the called line (whether or not it is also the connected line).