(k) refrain from transferring, assigning or selling a licence granted to the licensee under this Act or cede control in the operations of the licence or merge with another person or licensee without prior approval in writing of the Commission; and (l) comply with a decision issued by the Commission and make arrangements for the provision or rapid restoration of communication services in the event of, or during a major disaster in order to ensure communications between emergency services and the competent authorities and broadcasts to the general public. Additional obligations pertaining to licensee holding licence for provision of publicly available electronic communications networks. 16. In addition to the obligations provided for under section 15, a licensee holding a licence for the provision of a publicly available electronic communications network shall (a) negotiate and grant interconnection to the network of that licensee under reasonable terms when requested to do so by another licensee holding a licence for the provision of a publicly available electronic communications network; (b) ensure that the capacity, quantity and features of the network are sufficient for providing and maintaining an efficient communications network; (c) ensure that the network is sufficient for and compatible with such international electronic communications services as the Commission may specify; (d) ensure the security of the network and an extension of that network; (e) ensure that the network is capable of providing calling-line identification facilities as specified by the Commission; and (f) ensure that the network does not cause harmful interference with the lawful use or operation of an electronic communications network or services. Additional obligations pertaining to licensee holding licence for provision of publicly available electronic communications services. 17. In addition to the obligations established under sections 15 and 16, a licensee holding a licence for the provision of publicly available electronic communications services shall (a) 17 provide such services efficiently, complying with the standards for quality generally accepted in the industry or as may be specified by the Commission;