Electronic And Postal Communications (Digital and other Broadcasting Networks) G.N. No. 418 (contd) explanations to the Authority three months before the expiry date of the permit, giving reasons for not accomplishing the construction within the period indicated in the permit. (6) Upon receiving written explanations the Authority shall conduct due diligence to establish whether the reasons given are valid and may reject and cancel the permit or accept and extend the permit to a maximum period of twelve months without further extension. Obligations of multiplex operator 7. The Network Facilities Licensee who has been authorized to provide digital terrestrial broadcasting multiplexing and signal distribution services shall comply with the following(a) to provide access to Free to Air Content Services licensees as primary obligation; (b) to provide access to subscription (pay television) on secondary basis; (c) to make available, provisioning of content aggregation and programme bouquet handling system that shall support data paths embedded in the DVB stream based on open source (non-proprietary) multimedia system to support Electronic Programme Guide (EPG) and Electronic Programme Information (EPI) for Free-To-Air (FTA) and Conditional Access for subscription services. The schedule on Set-TopBox (STB) shall describe all services carried on the Digital Terrestrial Television (DTT) platform for the following 7 days; (d) submit annually to the Authority for its approval an updated roll-out plan for the provision of National Network Facilities to provide digital terrestrial broadcasting multiplexing and signal distribution services; (e) to provide services to current and new content service licensee on a fair, transparent, impartial and nondiscriminatory manner; (f) to construct, operate, install, manage and maintain network facilities in accordance with the regulations 39