THE REAL YMODEM-G PROTOCOL

 This protocol is a variation on the YMODEM, which
 achieves very high transfer rates by sending blocks one after
 another without waiting for acknowledgement. This however
 means than an error-free link such as an error-correcting mo-
 dem or null modem cable between two computers is needed. If an
 error is detected by the receiver, the transfer is aborted.