5) to grant open access to technical interfaces, protocols or other key technologies that are indispensable for the interoperability of services or provision of virtual network services; 6) to provide co-location or other forms of sharing of electronic communications infrastructure; 7) to provide specific services needed to ensure the provision of service to users; 8) to provide access to operational support systems or other similar software systems necessary to ensure fair competition in the provision of services; 9) to interconnect networks or network facilities, including the possibility to interconnect networks at any network point where this is technically feasible; 10) to provide access to associated services, including the identity, location and presence services. 2. When adopting a decision on imposing or withdrawing the obligations referred to in paragraph 1 of this Article, the Communications Regulatory Authority shall take account of the principles and objectives of this Law and of the following factors: 1) technical and economic feasibility of using or installing competing technical facilities in accordance with market developments, taking into account nature and type of access, including interconnection, as well as the ability to access other facilities; 2) the feasibility of providing the access requested, in relation to the capacity (resources) available; 3) initial investments of the facility owner, taking into consideration investments made by public sector and investment risk; 4) the need to ensure long-term competition, including expansion of electronic communications infrastructure and cost-effectiveness of development; 5) intellectual property rights; 6) the provision of services covering more than one European Union Member State. 3. When imposing a specific obligation, the Communications Regulatory Authority shall have the right to set forth the conditions for providing access and/or technical specifications that are mandatory for access provider and/or user in order to ensure proper network operation. Article 22. Access 1. Undertakings that are legitimately engaged in an electronic communications activity shall have the right to negotiate access freely. Operators shall have a right and, when 36