🚀 go-pugleaf

Unfortunately, the fact that the modems have error correction built in
does not mean you don't need end to end error correction.  Loss of
data, particularly on busy Unix systems, is very common at even
moderate speeds on serial input lines.  So the fact that the data got
between the modems intact does NOT mean that the data got from the
modem to the computer, or from the computer to the modem without loss
(particularly if the modems are busy doing retries and are unable to
accept new data at full speed).  Early indications are that these
sorts of flow problems are so common that per packet error checking is
still the most efficient way to go, with the issue of packet size
being a yet to be determined variable.  Overall flow control issues
are also still not fully worked out.  Right now, we're planning to
work with standard file transfer programs and test different flow
control techniques and block sizes to see how the modems perform in
real life.  However, we've all agreed that per block error checking
should be maintained over dialup lines, just as it is at lower speeds.

These modems may have some uses, but they are definitely not the
ultimate.  Their lack of true full duplex capability is a very
significant factor.

--Lauren--