The present invention provides a system, method and apparatus for providing network level and nodal level vulnerability protection in VoIP networks by receiving a communication, filtering the received communication using three or more stages selected from the group comprising a media protection and filtering...http://www.google.es/patents/US20070121596?utm_source=gb-gplus-sharePatente US20070121596 - System and method for providing network level and nodal level vulnerability protection in VoIP networks
System and method for providing network level and nodal level vulnerability ...
