zmodem
     
         a file transfer protocol with error checking and
        crash recovery.  developed by chuck forsberg.  its transfer
        rate is similar to ymodem-g.  like ymodem-g, zmodem does not
        wait for positive acknowledgement after each block is sent,
        but rather sends blocks in rapid succession.  if a zmodem
        transfer is cancelled or interrupted for any reason, the
        transfer can be resurrected later and the previously
        transferred information need not be resent.
     
        ftp oakland
        ftp://oak.oakland.edu/pub/simtelnet/msdos/zmodem/, ftp pdx
        ftp://ftp.cs.pdx.edu/pub/zmodem/.
     
        telephone: +1 900 737 7836.
     
        1996-07-02
     
     
see also:
ymodem-g lt;ftp oaklandgt; lt;ftp pdxgt;