1. A method for automatically generating a limited set of spectrum and service profiles for use in an operator's telecommunication network, said method comprising: collecting physical layer parameter values for individual lines; determining a set of optimized parameter values for each one of said individual lines; estimating a probability density function for each optimized parameter based on optimized parameter values for multiple lines; sampling said probability density function for each optimized parameter; and selecting and combining according to parameter and profile policies (policies) a set of optimized parameter values thereby generating said limited set of spectrum and service profiles.