submitted a written request, until the end of the settlement period or the month in which the date agreed with the subscriber for cessation of the billing delivery expires. 5. The billing referred to in paragraph 4 shall be delivered by a provider of publicly available telecommunications services: 1) in the case of a subscriber being a party to a written agreement – with an invoice for the settlement period relevant to the billing; 2) in the case of a pre-paid service provided in a public mobile telecommunications network to a subscriber who has an assigned number and has made available its data referred to in Article 60a (1a) – the first billing shall be delivered to the subscriber within 14 days of the day of submission of a request, and each subsequent billing by the 10th day of a calendar month. 6. A provider of publicly available telecommunications services shall deliver, at a subscriber’s request, an itemised billing including: 1) in the case of a subscriber being a party to a written agreement with the provider – settlement periods predating the settlement period for which the subscriber requests this service by not more than 12 months. 2) in the case of a pre-paid service provided in a public telecommunications network to a subscriber who has made available its data referred to in Article 60a (1a) – the period not longer than 12 months predating the date of submitting a request by the subscriber. 7. In the case referred to in paragraph 6, an itemised billing shall be delivered within 14 days of the day on which the subscriber submitted a request. Chapter 2 Provision of universal service Article 81. 1. Universal service shall mean a set of telecommunications services, including facilities for the disabled, provided in any technology, preserving good quality and at a reasonable price, which should be available in the territory of the Republic of Poland. 2. A designated undertakings shall mean an undertaking which was designated under a decision referred to in Article 82 (4) or in Article 83. 3. The set of telecommunications services referred to in paragraph 1 shall include the following services: 1) connection of a network termination point at a fixed location, capable of supporting voice, facsimile and data communications, including functional Internet access at rates supporting the use of common applications to handle current daily life matters, in particular using electronic mail or applications that support payments; 2) maintaining the subscriber line with a network termination point referred to in point 1) ready for providing national and international telephone calls; 3) national and international telephone calls; 4) nationwide directory enquiry services, available also to the users of public pay telephones or other points of access capable of voice communications; 5) nationwide directories; 6) the provision of telephone services by means of public pay telephones or other points of access capable of voice communications. 4. (deleted). 5. In the case of: 1) public schools, 2) non-public schools with the rights of public schools, where obligatory school attendance or obligatory study is delivered, 3) (deleted),