| US 7,460,498 B2 | ||
| System and method for detecting anomalies along telecommunication lines | ||
| Gary Hunt, Gurley, Ala. (US); Fred Chu, Madison, Ala. (US); and Lee T. Gusler, Jr., Madison, Ala. (US) | ||
| Assigned to ADTRAN, Inc., Huntsville, Ala. (US) | ||
| Filed on Dec. 04, 2003, as Appl. No. 10/727,411. | ||
| Prior Publication US 2005/0123031 A1, Jun. 09, 2005 | ||
| Int. Cl. H04B 3/20 (2006.01) | ||
| U.S. Cl. 370—286 | 32 Claims |
| 1. An anomaly detection system, comprising:
an echo canceler having a plurality of taps respectively associated with a plurality of tap coefficients; and
anomaly detection logic configured to determine a difference between a new tap coefficient associated with one of the taps
and a previous tap coefficient associated with the one tap, the anomaly detection logic configured to perform a comparison
between the difference and a threshold and to detect an anomaly along a telecommunication line based on the comparison,
wherein the anomaly causes a resistance at a point on the telecommunication line to vary over time.
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