32 No. 3 Electronic and Postal Communications (b) (c) (d) Access 2010 network service licensees where there is market failure; issue interconnection negotiations procedure and guidance on approval or rejection of interconnection agreements; place all interconnection agreements in the public register; and arbitrate or appoint an arbitrator to arbitrate on interconnection disputes. 28.(1) Every electronic communications licensee has the right for the purposes of enabling the provision of electronic communications services to the public, to negotiate an agreement for access to(a) electronic communications network elements of any network facilities licensee; and (b) electronic communications services provided by any network service licensee, that appear in a list as published in the Gazette by the Authority, and, when solicited in writing by an electronic communications licensee, every network facilities licensee and every network service licensee has, for the purposes of enabling the provision of electronic communications services to the public, the obligation to negotiate such an agreement. (2) The Authority shall (a) regulate access arrangements between network service licensees; (b) issue access negotiations procedure and guidance on approval or rejection on interconnection agreements; and (c) place all access agreement in the public register. Co-location and infrastructure sharing 29.(1) The Authority shall have the powers to(a) regulate the co-location arrangements network facilities licensees; between