3.1.2.5 Session Ack Send Timer
This session-specific timer regulates the amount of time that the protocol waits before sending a session acknowledgment to the remote host. This timer is started when the queue manager receives a UserMessage Packet ([MS-MQMQ] section 2.2.20) while this timer is not running. This timer is restarted when the queue manager processes a recoverable message (section 3.1.5.8.7). Upon expiration of this timer, the protocol triggers a Session Ack Send Timer Event (section 3.1.6.4). During the processing of this event, this timer is started if the UnackedReceivedMsgCount ADM element does not equal 0x0000.