D-Link DIR-615 User Manual page 68

Section 3 - Configuration
Dir: The preference given to outbound packets of this conversation by the QoS Engine logic. Smaller numbers represent higher
priority.
Priority:
The number of seconds of idle time until the router considers the session terminated. The initial value of Time Out depends
on the type and state of the connection.
Time Out:
300 seconds - UDP connections.
240 seconds - Reset or closed TCP connections. The connection does not close instantly so that lingering packets
can pass or the connection can be re-established.
7800 seconds - Established or closing TCP connections.
D-Link DIR-615 User Manual 64