182

■ Phase 3 with timeout at the receiving station

If the receiving station receives no subsequent text or normal sequence of DLE EOT
and IDs within 30 seconds after sending a sequence of DLE ACK and IDs, it sends a
sequence of DLE EOT and IDs and aborts the transmission abnormally.
Sending
station Data text #n
DLE ACK and IDs
DLE EOT and IDs
Receiving
station
30 seconds
[ 2 ] Aborting Data Transmission
Pressing the C key aborts data transmission.
If the C key is pressed during downloading, the BHT transmits a sequence of DLE EOT
and IDs and aborts the file transmission.
If it is pressed during uploading, the BHT transmits the current transmission block
followed by a sequence of DLE EOT and IDs and then aborts the file transmission.
Abnormal
termination