公开(公告)号：US20180013880A1

公开(公告)日：2018-01-11

申请号：US15548831

申请日：2015-02-04

Applicant: NOKIA SOLUTIONS AND NETWORKS OY

Inventor： Nagaraja RAO ,  Derek UNDERWOOD ,  Wolfgang BUECKER

IPC: H04M3/22 ,  H04L29/06 ,  H04M1/253

CPC classification number: H04M3/2281 ,  H04L63/0281 ,  H04L63/061 ,  H04L63/166 ,  H04L63/306 ,  H04L65/00 ,  H04L65/10 ,  H04L65/1046 ,  H04M1/2535 ,  H04M7/0072

Abstract: Certain embodiments of the invention generally relate to lawful interception of communications for IP Multimedia System-based (IMS-based) voice over IP (VoIP). For example, some embodiments relate to interception of communications including interception for encrypted, transcoded media. A method may include identifying a network node that provides call content interception. The method may also include determining a codec type used at a location of the call content interception at the network node. The method may further include sending a matched codec of the codec type used at the location of the call content interception at the network node to a delivery function in the communications network.