Scalable and iterative deep packet inspection for communications networks

A method, comprising:

• monitoring, with a diameter edge agent device, signaling traffic passing between a mobility management entity in a visiting network and a home subscriber server in a home network;
• routing, with the diameter edge agent device in the visiting network, the signaling traffic to a targeting system attached to the diameter edge agent device;
• routing, with the targeting system, the signaling traffic to an inspection area of a visitor network by a first mode or a second mode,
• wherein the first mode includes relaying the signaling traffic to the inspection area of the visitor network and the second mode includes modifying routing information of the signaling traffic;
• inspecting, with an inspection probe disposed in the inspection area of the visitor network, the signaling traffic;
• and
• copying and processing, with an intercept probe, the signaling traffic in an intercept area, wherein the intercept probe is disposed between and in communication a local proxy-call session control function (P-CSCF) and a home serving-call session control function (S-CSCF) of the home network.