1. A method for automatically generating a limited set of spectrum and service profiles for use in an operator's telecommunication network, said limited set of spectrum and service profiles being associated with a plurality of performance link parameters including at least one of a target noise margin, a maximum allowable delay, a maximum bit rate, and a maximum power spectral density, said method comprising: collecting, by a dynamic line manager, physical layer parameter values for a plurality of individual lines, said physical layer parameter values including one or more of a loop attenuation, a background noise power, an impulse noise level and a transmitted power level; determining, by the dynamic line manager, a set of parameter values for each of the plurality of individual lines from said physical layer parameter values; generating, by the dynamic line manager, a probability density function for each of the set of parameter values based on the sets of parameter values for the plurality of individual lines; down-sampling, by the dynamic line manager, said probability density function for each of the set of parameter values to restrict a number of spectrum and service profiles in said limited set; and selecting and combining according to parameter and profile policies, by the dynamic line manager, a limited set of parameter values; and generating said limited set of spectrum and service profiles by cross-combining said limited set of parameter values.