DM> At first thought, it could have been by modem init string, but
 DM> then it comes around again, why is only Zmodem that plays up ?
 DM> The othe two transfers protocols that I have tried, Sealink &
 DM> Kermit, both worked fine, every time.

I suspect Kermit is much the same, but I know Sealink well, and that will
only send 8 blocks in advance.  It then won't go any further until it gets
an ACK. Zmodem will go for broke, until it hears a NAK.  So as long as your
modem's buffer can handle 8*133, you will be ok, even without flow control,
if you use Sealink.  BFN.

Paul

--- GoldED 2.40