Empirix Hammer XMS â_" Voice Network & Service Monitoring System The Hammer XMS Monitoring System is the perfect tool for performing real-time monitoring of calls with regard to signaling performance and media quality. Amongst other protocols, it supports SIP and RTP with various compression algorithms.

Hammer XMS is designed primarily for network operators (enterprises and service providers). http://www.empirix.com/default.asp?action=article&ID=443.