The present invention takes advantage of a data hosting service available in a data delivery system. The front chaffer has a closed upstream portion and an open downstream portion. The gateway may search the collect information upon receiving information identifying a called or calling party, to find information that may be associated with the called or calling party. In one embodiment, crossover times, when this modified phase difference crosses over a preset value, are determined, and these crossover times are used to determine the value for the specified parameter.