Abstract: Methods and network devices implement a lawful interception (LI) trigger control function as an LI target handler and a modified trigger control function. A generic LI triggering interface enables the modified trigger control function to query the LI target handler regarding whether entities using a network function instance are in a target list. The LI target handler has to meet the LI security requirements, but the modified trigger control function does not have to meet such requirements.

Abstract: A service interruption manager function, SIMF, receives information that indicates that lawful interception, LI, service interruption associated with an LI task has occurred. Based on the received information, a determination is made of a status regarding the LI service interruption associated with the LI task, for example a determination whether the LI service interruption associated with the LI task has a current status that is any of: terminated, ongoing or initiated. A message is then transmitted, to a delivery function, DF, via an HI2 interface, the message comprising at least the determined status regarding the LI service interruption.

Abstract: Methods and network devices implement a lawful interception (LI) trigger control function as an LI target handler and a modified trigger control function. A generic LI triggering interface enables the modified trigger control function to query the LI target handler regarding whether entities using a network function instance are in a target list. The LI target handler has to meet the LI security requirements, but the modified trigger control function does not have to meet such requirements.