Importance

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Abstract

A signal-processing method and system for a telecommunications switch that supports a number of individually addressable telephones including transmitting ring signals to telephones that are determined to be in an inadvertent off-hook condition. The telecommunications switch is configured to transmit a first notification ring signal upon detecting that a particular telecommunications line is in a condition that indicates that the associated telephone is in the inadvertent off-hook condition. The first ring signal induces a ring condition that preferably is uniquely identifiable as indicating that the phone has been left off-hook. A second notification ring signal is transmitted if the phone is returned to the on-hook condition and an incoming call is directed to the telephone. Preferably, the second ring signal induces a uniquely identifiable ring condition indicating that an incoming call is directed to an off-hook telephone. Optionally, a third off-hook notification signal may be transmitted to the phone to generate an audible alert by means of a speaker in the earpiece of the telephone.

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First Claim