Lucent Technologies Inc.

Agere Systems Guardian Corp.

Glenn A Ehrich

James Albert Johanson, Iii

Vasu Iyengar

Richard M Ubowski

Paul Joseph Davis

James Charles Popa

An adjunct Type II caller ID/call waiting (CIDCW) receiver unit is provided which has a greatly improved ability to detect tones and other call related information on a telephone line from a central office while the customer premises equipment is in an off-hook condition. The inventive adjunct CIDCW receiver unit is placed in series between the telephone line from the central office and the customer premises equipment, rather than in parallel with the customer premises equipment as in conventional adjunct CIDCW receiver units. A second telephone line interface (TLI) is included in the adjunct CIDCW receiver unit for connection to the customer premises unit to simulate the impedance of the telephone line. The adjunct CIDCW receiver unit has the ability to disconnect, mute or suppress the microphone signal from the customer premises equipment from being included in the signal received by the call related information receiver portion of the adjunct CIDCW receiver unit.

Call related information receiver unit

A digital answering machine, electronic voice mail system, or any other voice messaging system integrating both non-speech data such as caller ID information or graphical or pictorial images together with associated speech data in common memory such that only one message table is necessary. The integrated common memory is divided into sectors, and each sector is divided into pages which each contain both speech and non-speech data. A single message table is associated with each corresponding set of speech and non-speech data, and includes an offset value indicating the beginning address of the speech data stored just above its associated non-speech data in the first linked page. The offset value is variable to provide an elastic non-speech data buffer to accommodate variable length non-speech data such as would be required by the various caller ID standards throughout the world.

Elastic buffer for data storage with speech data

Growing community of inventors

Wescosville, PA, United States of America

Glenn A Ehrich