The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 16, 2002
Filed:
Mar. 05, 1999
John M. Carman, Alexandria, VA (US);
David H. Cave, Fairfax, VA (US);
Lin H. Kerns, Springfield, VA (US);
Andrew N. Smith, Herndon, VA (US);
Michael G. Pilkerton, Fairfax, VA (US);
R. Andrew Poole, Ashburn, VA (US);
Bell Atlantic Services Network, Inc., Arlington, VA (US);
Abstract
In various forms of telephone network signaling, automatic number identification information (ANI) includes a field of two or more 'information' (II) digits, typically used to indicate a calling line attribute, such as hospital line, residential line, payphone, etc. A number of situations have arisen where it is desirable to use these digits to control network functions and it is necessary to accurately pass the digits through with all call related signaling. For example, accurate II digits can enable appropriate processing, billing and payments for toll-free calls from payphones. Existing switch software, however, does not always provide the correct II digits or pass the digits through unchanged. In accord with the invention, a call requiring flexible ANI functionality triggers access to a central database, preferably in a service control point (SCP) or a signaling transfer point (STP). The response message from the database provides the appropriate information digits for the ANI field, and the network switches pass the signaling with those digits for all further processing of the call.