L3P TUP PPL Timers

Timer ID | Timer | Default Value (10ms)
--- | --- | ---
0x01 | L4 Loopback ACK Wait | 1000
0x02 | L4 Clear Request Wait | 3000
0x03 | TUP Reset Complete Wait | 6000
0x04 | M/SW Block Response Wait | 12000
0x05 | HW Block for OOS Response Wait | 12000

A type of diagnostic test in which the transmitted signal is returned to the sending device after passing through a data communications link or network.
Positive acknowledgment to a message
Telephone User Part
Out of Service