IMS BUDGET CONTROL FOR A MEDIA CHANGE DURING AN IMS SESSION

摘要

IMS gateway systems and methods is to provide budget control in an IMS network. IMS network enables the medium to change, such as the audio to the audio / video during the IMS session. IMS gateway system 200 of the present invention receives a session control message, such as for example SIP INVITE message in response to a medium change during the session. IMS gateway system 200 identifies the source information for the new media in the session control message. IMS gateway system 200 will generate a billing request response message, and includes the media information for the new media in the charging request message. IMS gateway system 200 then transmits the charging request message to the online charging system (OCS) (220) provides the billing of the session based on the new media for the session.