A Next Generation Network (NGN) is a packet-based network able to provide services including Telecommunication Services and able to make use of multiple broadband, QoS-enabled transport technologies and in which service-related functions are independent from underlying transport-related technologies. Septier IP probing solutions are tuned to monitor and intercept VoIP traffic carried on these networks. Common targeting criteria include dynamic MPLS tags, IP addresses, MAC addresses, MSISDN numbers and more.