7.2.242 User-Session-Id AVP

32.2993GPPCharging managementDiameter charging applicationsRelease 16Telecommunication managementTS

The User-Session-Id AVP (AVP code 830) is of type UTF8String and holds the session identifier. For a SIP session the User-Session-Id contains the SIP Call ID, as defined in RFC 3261 [405]. When the AS acts as B2BUA, the incoming Session-ID leg is covered.