Patent ReferencesMethod of and apparatus for voice communication storage and forwarding with simultaneous access to multiple users Apparatus for controlling digital voice recording and playback over telephone lines and adapted for use with standard host computers Terminal based adjunct call manager for a communication system Automated telephone operator overflow device Directory assistance systems Voice-switched gain control for voice communication equipment connected to telephone lines Method and apparatus for storing and forwarding voice signals with controlled access Interactive call distribution processor Automated call handling apparatus Switchless automatic call distribution system InventorsAssigneeApplicationNo. 875069 filed on 04/28/1992US Classes:370/261, Technique for setting up a conference call370/259, SPECIAL SERVICES370/463, Details of circuit or interface for connecting user to the network379/88.24, By generated tone379/158, Conferencing379/211.01, Call diversion (e.g., call capture)379/212.01Call transferExaminersPrimary: Chin, WellingtonAssistant: Nguyen, Chau Attorney, Agent or FirmInternational ClassesH04M 003/56H04L 005/18 AbstractA control system for processing calls comprising a call handling device and a device controller that are each connected to a network via a call connection interface that permits establishing and releasing a network connection, participation with another call connection interface in the same network connection, and either control over a network connection when the interface is the sole interface participating in that connection or control over a network connection to drop the last leg added to a network connection, the device controller and call handling device sending messages to each other over a message transfer interface. Also disclosed are a system for shifting control of a network connection and a system for monitoring the state of a network connection from a network interface that is not actively engaged in the network connection.Other References
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