A network element (14) receives a traffic data stream having an embedded in-band signaling pattern. The network element (14) synchronizes to the traffic data stream and detects the location of the in-band signaling pattern. The network element (14) then replaces the in-band signaling pattern with a noise-mitigating...http://www.google.de/patents/US6553041?utm_source=gb-gplus-sharePatent US6553041 - Method, apparatus and system for mitigating in-band signaling noise
