Most of the clients take support from freelancers because may be the service time is less or related to financial matters. In Telecom field most of the projects are related to field engineers. Telecom clients want to work with them closely. The Telcom service providers hire telecom freelancers through different freelance portals. They can choose as per the candidate skills and it should be suitable to client requirement. That information all collect from freelance job portals like Fieldengineer.com and etc.