Abstract: A mechanism is provided that enables hiding identities of a target subscriber that is to be subject of lawful interception, LI, when the intercept access point, IAP, is outside the network operator part of the LI domain. Monitoring of data traffic such as over-the-top, OTT, services is enabled while at the same time hiding LI target identities to a network element, NE, containing the IAP. A secure memory area in the NE is dedicated to the LI functionality necessary to intercept and report interception data to the operator part of the LI domain. The interface between the NE and the operator part of the LI domain is the use of a secure injection channel via which the necessary LI software and target information are conveyed between the NE and the operator part of the LI domain.

Abstract: A mechanism is provided that enables hiding identities of a target subscriber that is to be subject of lawful interception, LI, when the intercept access point, IAP, is outside the network operator part of the LI domain. Monitoring of data traffic such as over-the-top, OTT, services is enabled while at the same time hiding LI target identities to a network element, NE, containing the IAP. A secure memory area in the NE is dedicated to the LI functionality necessary to intercept and report interception data to the operator part of the LI domain. The interface between the NE and the operator part of the LI domain is the use of a secure injection channel via which the necessary LI software and target information are conveyed between the NE and the operator part of the LI domain.

Abstract: A Lawful Intercept (LI) system and a method in a LI system comprising at least one Intercept Access Point (IAP) for intercepting communication traffic using User Datagram Protocol (UDP) and Transmission Control Protocol (TCP) packets in one or more communications networks. The IAP delivers the communication traffic as Communication Content (CC) to a Law Enforcement Agency (LEA) via a mediation functionality controlled by an administration functionality. The method comprises receiving CC as UDP and TCP; storing UDP and TCP CC in a buffer arrangement; and forwarding TCP CC or UDP CC via a first CC handover interface or via a second CC handover interface, separated from the first CC handover interface, to the LEA. A synchronization mechanism is provided in order to retransmit all IP packets lost over the new interface and a buffer capacity process.

Abstract: A Lawful Intercept, (LI) system and a method in a LI system comprising at least one Intercept Access Point, (IAP) for intercepting communication traffic using User Datagram Protocol, (UDP) and Transmission Control Protocol (TCP) packets in one or more communications networks. The IAP delivers the communication traffic as Communication Content (CC) to a Law Enforcement Agency (LEA) via a mediation functionality controlled by an administration functionality. The method comprises receiving CC as UDP and TCP; storing UDP and TCP CC in a buffer arrangement; and forwarding TCP CC or UDP CC via a first CC handover interface or via a second CC handover interface separated from the first CC handover interface, to the LEA. A synchronization mechanism is provided in order to retransmit all IP packets lost over the new interface and a buffer capacity process.