-=> Quoting BRUCE CLARK to LEONARD ERICKSON <=-

 -=> Quoting Leonard Erickson to Bruce Clark <=-
 
 BC> BBSNETS doesn't have 1k Kermit so I have to exit to DOS if I have 
 BC> anything over aprox 50k to upload/download, otherwise I use G-modem 
 BC> (modems do error correction). I've found that too many errors creep 
 BC> in on files over 100k though. Apparently the satellite link isn't 
 BC> that good without software error correction. 
 
 LE> You'll *definitely* do better (for fidonet stuff anyway) running a
 LE> mailer or a point program and connecting to one of the local fidonet
 LE> nodes. 
 
 LE> Or dialing into one of the ones that's still running a BBS.

 BC> The problem I have only occurs when in a DOS Window. 
 BC> I exit Win3.11 and run my terminal program in plain DOS so I don't 
 BC> have the lock-up problem with Z-modem. 
 BC> I use Z-modem's "resume" feature when downloading a file over 1meg 
 BC> in size. 

Well, if you are using DSZ for your Zmodem, there's a parameter you
need to set. I don't recall what it is, but I can look it up.

The problem is that the lag time over a satellite link is *huge*. The
time between when it sends a packet and when it gets an ACK or NAK from
your end *ignoring* everything other than the speed of light lag for
the satellite hop is 23,000*4/186,000. That's about half a second. 

The 23,000 *4 is because the packet has to go 23,000 miles to the
satellite, another 23,000 down to the ground station in the states,
then you reply has to go back over the same distance. Add in various
network delays and you get times of over a second. Which is enough to
cause problems.


--- FMailX 1.60