Telephone interface controller for unattended operation
Patent 4246443 Issued on January 20, 1981. Estimated Expiration Date: 
September 25, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 25, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3586787 3748496 InventorApplicationNo. 05/945313 filed on 09/25/1978US Classes:455/462, Including private cordless extension system455/569.1Hands-free or loudspeaking arrangementExaminersPrimary: Cardillo, Raymond F. Jr.Assistant: Popek, Joseph A. Attorney, Agent or FirmInternational ClassH04Q 7/00 (20060101)AbstractA communication interfacing device which allows for automatically coupling two diverse communication systems which transmit audio information. The device further includes a telephone answering circuitry which allows a telephone to be interfaced automatically with radio transceivers, computers, and intercoms such that the device will automatically connect and disconnect incoming telephone calls to and from such devices. The system employs voice responsive controllers which affect the timing cycles of individual communication channels to allow for a two-way conversation between remote stations utilizing diverse communication devices. The controllers allow for discriminating between incoming and outgoing calls on a priority basis such that channel switching modes cannot be interrupted until a conversation on the priority channel or an audio signal ceases. | |
