3(b) of 51(I) of 2012. "call" means a connection established by means of a publicly available electronic communications service allowing two-way voice communications. “call forwarding” means the facility by which incoming calls can be sent to another destination in Cyprus or elsewhere; “calling-line identification” means any technical means by which the identity of the calling network termination point may be presented; 3(a) of 112(I) of 2016. “CE marking” means a marking by which the manufacturer indicates that the radio equipment is in conformity with the applicable requirements set out in Union harmonisation legislation providing for its affixing; 2(a) of 104(I) of 2016. “civil works” means every outcome of building or civil engineering works which is sufficient of itself to fulfil an economic or technical function and entails one or more elements of physical infrastructure; 4(j) of 160(I) of 2013. “clearance” means the operation of collecting postal items by a postal service provider; “closed user group” means persons not necessarily bound by economic links but who can be identified as members of a group on the basis of a lasting commercial and/or professional relationship among themselves or with another person of the group, and whose internal telecommunication needs result from the common interest underlying this lasting relationship; “co-location” means the provision of the physical space and the technical installations which are necessary for the placing and connection, in a reasonable manner, of the relevant equipment of a beneficiary; 26