ents irrespective of what technology is being used. These sites are useful when there is a network expansion, as the same site can house more than one base station. A well-designed equipment room ultimately decides on the running life of the installed equipment. A normal equipment room designed for a BTS site provides a carpet area of roughly 10 m² (3.3 m X 3.3 m). Equipment rooms or shelters are of two major kinds, prefabricated or constructed. Depending on the situation, the operator chooses between erecting a prefabricated shelter and constructing a room. These models are used mainly to provide macrocellular solutions. In a basic indoor site the BTS and transmission equipment along with ancillaries are housed indoors and the cellular antenna is mounted outdoors. In such cases the tower can be mounted on the building rooftop or on the ground if it is a low building. Prefabricated equipment shelters are made of modular panels of galvanised steel sheets having an insulated separation in between. These are easy to transport and provide easy construction of equipment rooms in areas where it is not cost-effective to construct equipment rooms. These also allow quick construction of equipment sites for faster roll-out and can be dismantled if the site needs to be closed down or shifted to another building. Special indoor sites are installed in the same way bank teller machines are installed. The equipment modules are sunk inside the building and are accessible from the outside. The cables, transmission links and antenna are mounted outside on poles or a tower adjacent to the site. Outdoor Sites These are typical examples of microcellular solutions found in cities and big towns, where existing municipal or government property on the streets, like light poles, bus stops, free-standing structures, Roll-Out Network Project Management power lines, etc., are used to hide the BTS and the antennas. They are integrated together depending on the regulations governing the usage of such property. For a pole site, a BTS is mounted