Abstract: A method and apparatus for storing a voice message. The method includes the steps of storing a coded representation of the voice message in a block of memory associated with the voice message and sized to correspond to the size of the coded representation, retrieving the coded representation to play the voice message to a user, compressing the coded representation to produce a compressed representation of the voice message, the compressed representation having a lesser size than the coded representation, after the coded representation has been retrieved, and storing the compressed representation of the message in the block of memory in place of the coded representation.

Abstract: An apparatus for muting communications subscriber equipment connected to a communications line includes a monitoring circuit for monitoring electrical conditions of the communications line, when the subscriber equipment is connected thereto. A disconnection circuit is provided for disconnecting the subscriber equipment from the communication line and a termination circuit is provided for terminating the communications line with a dummy termination when the subscriber equipment is disconnected, such that, the communications line appears to be terminated by the subscriber equipment. When the subscriber equipment is disconnected from the communications line a power supply circuit provides power to the subscriber equipment with the same electrical conditions as determined by the monitoring circuit prior to disconnecting the subscriber equipment.

Abstract: A circuit for use with a SCWID adjunct to remove A.C. in-band signaling tones from the voice path to a telephone apparatus serially connected to the adjunct. The A.C. signal component is carried on top of the D.C. voltage used to power the telephone. The circuit includes means to monitor the D.C. voltage level and to pass this voltage substantially unchanged to the telephone. The A.C. signal in the form of a FSK tone, received from the central office, is used by the adjunct to provide a subscriber with call feature information such as the identity of a calling party while the telephone is off-hook.