Denso BHT-8000 User Manual page 177

Phase 2 with suspension of data reception for erasure of the flash memory
If the receiving BHT requires the flash memory to be erased for receiving downloaded files, it sends a
sequence of WACK and IDs to the sending station to suspend the data transmission.
Upon receipt of the sequence of WACK and IDs, the sending station stops the data transmission until
any response comes from the receiving station for one minute. If no response comes within one minute,
the sending station sends a sequence of DLE EOT and IDs and then aborts the current transmission.
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Appendices