OBS_VALUE: There are still two prices that are regulated by the Telecommunications Market Commission, which apply only to Telefónica: The registration fee, i.e.the fee paid only once for the installation of the line. The subscription fee, i.e. the fixed amount paid monthly, regardless of the calls made.  Also see http://www.usuariosteleco.gob.es/derechos-usuario/Paginas/telefonia-fija.aspx?Faq=Facturas%20y%20formas%20de%20pago