Patent ID: 9497032
Filing Date: 2016-11-15
CPC Classification: H04L,H04M,H04W

Claim Text:
1. An apparatus comprising: at least one processor; and at least one memory including computer program code, the at least one processor, the at least one memory, and the computer program code configured to cause the apparatus to at least: detect whether a session initiated in an internet protocol multimedia subsystem is associated with a service requiring a special charging control; and add, in accordance with a result of the detect, charging information to session initiation protocol messages, wherein the session initiation protocol messages signal establishment or modification of the session in the internet protocol multimedia subsystem and the charging information includes tariff information, wherein at least one of the session initiation protocol messages comprises free of charge information and at least one other of the session initiation protocol messages comprises information to include a charge, and wherein the at least one of the session initiation protocol messages with the free of charge information causes at least one network node receiving the at least one of the session initiation protocol messages to disable charging functions for the session.