PBX DID and E and M tie trunk integration adapter and method
February 20, 2006. 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 3571517 3836723 Telephone call diverting and answering system Interface circuit for a telephone system Automated telephone voice service system Series connected interceptor Call screening system Method and system for identifying telephone callers Telephone line concentrator without switching matrix Patent #: 4674116 InventorsAssigneeApplicationNo. 06/831177 filed on 02/20/1986US Classes:379/88.19, Call source identification379/213.01, Intercept (e.g., dead or changed number)379/225, Multi-PBX interconnection379/233, Direct inward dialing379/84, At switching facility (e.g., central office, switchboard)379/88.25Message storage in centralized location (e.g., central office, PBX, etc.)ExaminersPrimary: Brown, Thomas W.Attorney, Agent or FirmInternational ClassesH04Q 3/62 (20060101)H04M 3/533 (20060101) H04M 3/50 (20060101) AbstractA private branch exchange (PBX) direct in dailing (DID) and an E&M tie trunk voice message integration adapter and method is disclosed. The invention permits a calling party on a DID line to a desired extension connected to a PBX to be automatically connected to the called party's mailbox in a VMS when the called extension is busy or does not answer.Other References
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