Patent ID: 7013007
Filing Date: 2006-03-14
Classification: H04M

Abstract:
1. A method for providing power within a telephone server coupled to a computer system via an interface bus, to a maximum number of telephones, and to a telephone trunk, the computer system providing a primary voltage and a secondary voltage, the method including: receiving the primary voltage and the secondary voltage from the computer system; generating ringer power in response to the primary voltage; generating direct inward dialing power in response to the primary voltage, the direct inward dialing power configured to provide a first operational voltage for a plurality of telephones from the maximum number of telephones, when the plurality of telephones receive telephone calls directly from the telephone trunk; and generating a ringing signal in response to the ringer power and to the secondary voltage; generating second operational voltage in response to the primary voltage for the telephones from the maximum number of telephones, when the telephones receive telephone calls from other telephones from the maximum number of telephones; wherein the first operational voltage is greater than the second operational voltage; wherein a peak voltage of the ringing signal is provided to no more than approximately one half of the maximum number of telephones at a time, and wherein none of the plurality of telephones are on a common line.