ITU-T Y.2770 PDF

This Recommendation primarily specifies the requirements for deep packet inspection (DPI) entities in NGN, addressing in particular, aspects such as application identification, flow identification, inspected traffic types, signature management, reporting to the network management system (NMS) and interaction with the policy decision functional entity.

This Recommendation also identifies the requirements for DPI of traffic in non-native encoding formats (e.g., encrypted traffic, compressed data, and transcoded information).

Any DPI function may be generally described by the concept of policy rules.

Implementers and users of the described techniques shall comply with all applicable national and regional laws, regulations and policies. The mechanism described in this Recommendation may not be applicable to the international correspondence in order to ensure the secrecy and sovereign national legal requirements placed upon telecommunications, and ITU Constitution and Convention.

This Recommendation does not address the specific impact of implementing a distributed DPI functionality. The requirements are primarily about functional aspects of DPI, but physical aspects are also covered. In the context of functional to physical mapping scenarios, only 1-to-1 mapping and N-to-1 mapping between a DPI-FE and a DPI-PE is within the scope of this Recommendation. In other words, no requirements cover distributed DPI-PEs.