3.1.2.2 Session Cleanup Timer
This session-specific timer regulates the amount of time that the protocol waits before closing an idle protocol session. If the value of the SessionActive ADM element is FALSE when the timer expires, the session is closed. The SessionActive ADM element is set to TRUE when a UserMessage Packet ([MS-MQMQ] section 2.2.20) is sent or received by the protocol. The duration of this timer MUST be set based on the system configuration, which is implementation-dependent.<44>