Electronic and Postal Communications (Access, Co-location and Infrastructure sharing) G.N. No. 429 (contd) the interoperability of communications services or virtual network services; (e) provide specified access services needed to ensure interoperability of end-to-end services to users, including facilities for intelligent network services; and (f) provide access to operational support systems or similar software systems. (7) Where a licensee is declared to hold a dominant position in a relevant market, the Authority may require it to provide various Access services in relation to any of the following communications networks’ elements or communications facilities(a) wholesale leased lines; (b) international capacity; (c) international inbound and outbound call termination facilities; (d) wholesale digital subscriber lines; (e) unbundled local loops; (f) main distribution frames or concentrators for bit stream access or digital subscriber line co-location; (g) dark fibre; and (h) narrowband dial-up facilities. (8) The Authority may, by way of a determination, amend the list of communications networks’facilities or for which access services may be required to be provided by licensed operators. (9) When considering whether to impose any access obligation, the Authority shall take into account(a) the technical and economic viability of installing competing facilities, in light of the level and rate of market development; (b) the feasibility and efficiency of providing the form of Access, particularly in light of the available capacity; and 178