Telephone system gateway interface
December 12, 2011. 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 ReferencesTelephone communications control system having a plurality of remote switching units PBX equipment with dial signal modification Automatic route selection of a private telephone network path on the basis of a public telephone network number Pay station telephone interface Inter-exchange carrier access selection feature for a PBX user Line interface unit for caller-controlled receipt and delivery of voice messages Feature telephone integration device Network implemented pay telephone set Key telephone apparatus Method and apparatus for altering the access format of telephone calls InventorsAssigneeApplicationNo. 806117 filed on 12/12/1991US Classes:379/143, WITH CHECK OPERATED CONTROL (E.G., PAYSTATION)379/88.25, Message storage in centralized location (e.g., central office, PBX, etc.)379/115.01, Interexchange billing operation379/144.02, Collect calling from payphone379/144.03, Fraud detection in payphone379/209.01Repetitive call attempts (e.g., camp-on-busy, retry)ExaminersPrimary: Schreyer, Stafford D.Attorney, Agent or FirmInternational ClassesH04M 003/42H04M 011/02 H04M 015/12 AbstractA method and apparatus for providing enhanced call service and call routing functions from a centralized location on a telephone network line through gateway connections to service providers is disclosed. A multiple function interface located between a paystation and an originating central office includes a monitoring circuit for monitoring call signals from the paystation, circuits for obtaining coin or card billing information from the paystation and a control circuit for verifying the payment information and selectively directing the call to a service provider to bypass the originating central office. Calls are able to be routed by a signal generating circuit as direct (1+) calls from the interface to any service provider. Interface circuits permit the interface to interconnect analog and business lines on the paystation side of the interface with analog and business lines and digital links on the service provider side of the interface. A protocol of the invention controls the offering of call services between an intelligent paystation and an interface in which selection is determined based upon a predetermined preference. | |
