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:
Jan. 29, 2008
Filed:
Aug. 09, 2001
Applicants:
Michael D Hoy, Ipswich, GB;
Mark a Fletcher, Ipswich, GB;
Alan E Cooper, Ipswich, GB;
Simon J Warwick, Somerset, GB;
Inventors:
Michael D Hoy, Ipswich, GB;
Mark A Fletcher, Ipswich, GB;
Alan E Cooper, Ipswich, GB;
Simon J Warwick, Somerset, GB;
Assignee:
British Telecommunications public limited company, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M 15/00 (2006.01); H04M 1/24 (2006.01); H04M 3/08 (2006.01); H04M 3/22 (2006.01);
U.S. Cl.
CPC ...
Abstract
A telecommunications network includes a management system for analyzing call detail records (CDR's) from terminating switches. The management system recovers CDR's by polling through switch managers which poll dependent exchanges. CDR's indicating a call clear occurring within a short predetermined time after a call answer are stored and used to indicate potentially faulty access network lines.