Special service call routing
Patent 5018191 Issued on May 21, 1991. Estimated Expiration Date: 
October 23, 2009. 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.
October 23, 2009. 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 3728486 Data storage and retrieval structure for a message storage system Method and apparatus for screening telephone calls Common controlled facsimile system Facsimile apparatus Store and forward switching type communication control apparatus Data transmission system Facsimile service Patent #: 4922348 Inventors
AssigneeApplicationNo. 425529 filed on 10/23/1989US Classes:379/100.09, Relay system379/93.14, Having switching station379/207.03, Time (e.g., time of day, expiration of time period, time zone, date)379/211.02, Call forwarding379/221.14, Routing parameter (e.g., area code, address, service provider identifier)379/244, In common control system379/245, Identification379/905, FAX MAIL379/908MULTIMEDIAExaminersPrimary: Ng, Jin F.Assistant: Woo, Stella Attorney, Agent or FirmInternational ClassH04N 001/32AbstractThis invention relates to methods of establishing facsimile (fax) connections. When it is determined that a call is a fax call, a fax indicator is sent with Common Channel Signaling (CCS) messages for that call. If a call with a fax indicator is received in a destination switching office, then the destination office checks to see if the called number is a fax number; if not, translation is made to find the number of a fax station for serving fax calls to the called number, and the call is completed to that fax station. Fax calls may be recognized by a fax class mark in an originating message from an Integrated Services Digital Network (ISDN) line or a dialed prefix such as #, #3, or an alternative common carrier code (10XXX) from an ordinary line. Calls may be automatically redirected to a store and forward system on busy or no answer, routed to one of a plurality of alternative destinations based on the day and time, junk fax calls may be screened, and a fax message waiting lamp on the called (voice) destination may be operated. For international calls, a translation from voice to fax may be made at an egress gateway switch; the fax calls may also be automatically routed over low distortion international transmission facilities.Other References
| |
