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US Patent 5222130 - Message arrangement and method for implementing a digital telephone system
US Patent Issued on June 22, 1993
Estimated Patent Expiration Date:
November 19, 2010Estimated 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.
Estimated Patent Expiration Date:
November 19, 2010Estimated 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.AbstractA message arrangement and method for interfacing a digital telephone Digital system including a Digital Facility Line Card (DFLC) that connects a user operated Telephone Instrument (DTI) to a stored program operated digital Central Office (CO) system. The message arrangement comprises, a DFLC message processor that generates and transmits to the DTI control messages in response to report messages transmitted by the DTI, following a user activated DTI event. The control messages provide the user with visual and aural DTI operating information. The DFLC message processor further generates and transmits to a CO system central controller, device report messages requesting access to, and network services from the CO system, responsive to call processing report messages from the DTI. The CO system central controller sends device control messages to the DFLC which operates in accordance with the received device control messages to generate and transmit to the DTI, DTI control messages. The DTI control messages instruct the DTI to provide the user with operating information and to collect call processing data from the DTI, for transmission to the DFLC message processor. The DFLC message processor translates the call processing data and generates device report messages, which are transmitted to the CO system. | InventorsApplicationNo. 615523 filed on 11/19/1990US Classes:379/399.02, Circuitry to provide a coder and decoder function379/219, PLURAL EXCHANGE NETWORK OR INTERCONNECTION379/225, Multi-PBX interconnection379/229, Interexchange signalling379/231Central office-to-PBX signallingField of Search379/398, LINE EQUALIZATION OR IMPEDANCE MATCHING379/219, PLURAL EXCHANGE NETWORK OR INTERCONNECTION379/225, Multi-PBX interconnection379/227, With an automatic exchange379/228, Having signalling to operator379/229, Interexchange signalling379/230, Signalling path distinct from trunk (e.g., CCIS)379/231, Central office-to-PBX signalling379/232PBX trunk groupsExaminersPrimary: Dwyer, James L.Assistant: Shehata, M. Attorney, Agent or FirmUS Patent References3920912, 4090034, Usage-sensitive billing arrangement for private branch exchange subscribersIssued on: 05/16/1978 Inventor: Moylan4492321, Apparatus for dispensing toner particles and sealing the storage chamber thereof Issued on: 01/08/1985 Inventor: Zoltner4499336, Common channel interoffice signaling system Issued on: 02/12/1985 Inventor: Krikor , et al.4661974, Automatic route selection of a private telephone network path on the basis of a public telephone network number Issued on: 04/28/1987 Inventor: Bales , et al.5042062, Method and apparatus for providing real-time switching of high bandwidth transmission channels Issued on: 08/20/1991 Inventor: Lee, et al.5046088, Converter for in-band routing and/or origination information Issued on: 09/03/1991 Inventor: Margulies5086461, Apparatus and method for providing existing 1ESS and 1AESS telephone switching equipment with the capability of using the SS7 protocol Issued on: 02/04/1992 Inventor: Thorn, et al.5103449PBX transparent ANI and DNIS using VRU Issued on: 04/07/1992 Inventor: Jolissaint International ClassH04M 007/00 |
