MIKE FARRILL wrote in a message to RICK COLLINS:
 RC> 2) Max modem-modem throughput at 33,600, with error correction is
 RC> 4200 bps.  EC overhead reduces this to the 4000 cps range.
 MF> Is the EC overhead you are refering to come from the use of the
 MF> Zmodem protocol?  Y-modem-g is always faster.  And also, he could
 MF> be using the 512k lap-m packet size which would give more
 MF> performance.
What Rick is referring to is the overhead in the error correcting protocol 
and not in the file transfer protocol.  Z-modem overhead will reduce the 
maximum possible transfer speed even further.  As for the LAPM packet size, 
the maximum on a Courier using LAPM is 244 bytes.  Plugging that size into 
the overhead calculation gives us 4015CPS as a maximum.  Using MNP EC with 
it's 256 byte packet size gives a maximum of 4021CPS.  Enabling data 
compression actually reduces the throughput on incompressible data reduces 
the maximum using 244 byte packets to 4000CPS.
Regards,
       David
--- timEd/2 1.10+
---------------