Patent ID: 6490346
Filing Date: 2002-12-03
Classification: H04M

Abstract:
An apparatus for providing a music-on-hold service in a key telephone system, comprising:a central office line circuit for receiving a first incoming call from an originating subscriber and for selectively reserving a first central office line that is unused for forming a central office communication loop to provide said music-on-hold service: an external music-on-hold melody source having a pre-recorded messages therein coupled to said central office line circuit via said unused first central office line port for providing said pre-recorded messages via said reserved first central office line; and, a control unit for connecting said first incoming call from said originating subscriber to said reserved first central office line coupled to said external music-on-hold melody source if a second central office line of a terminating subscriber is connected to an outgoing call or a second incoming call when said first incoming call is received from said originating subscriber.