You said:
 PR> Typically do not see errors on ZMODEM's error counter.
If you have an error-correcting connection, you probably won't.  The modem 
takes care of the line error before it ever gets to the ZModem driver.
 PR>   It could be something as simple as a flaky cord between the 
DW>modem and the wall jack.
 PR> Should see errors then...right?.
Same thing.  The modems will handle the error, and you won't actually see it. 
 It will manifest itself in sluggish screens, pause in the data stream on a 
download, lower throughput.  You -might- see an occaisional timeout error 
from ZModem if it doesn't receive a packet in a timely manner.
 PR> I plan to seriously look into this possibility.
You'd be surprised how much of a difference it makes.
 PR>  Could also be crosstalk in the lines.
 PR> Don't hear any transmit or receive.
If you can't hear carrier noise from your modem line when you pick up your 
voice line, you're probably ok there.
 PR> No multiplexed carrier and I'm only several miles from the Telco
 PR> office. BUT there is a rats nest of a connect box on a pole
 PR> somewhere between here and Telco office. There have been problems
 PR> at that point in the past.
Indeed.  Bad punches, load coils, bridge taps all make a mess on the phone 
lines.
 PR> Most modems I've used work ok.  I plug them in, cable them up and
 PR> they work fine.  The thruput questions came up as UL/DL files are
 PR> getting larger and larger.  I also seek to maximize capabilities of
 PR> existing hardware as I can't afford to upgrade right now.
As we all do.  Nobody like to have a corvette that won't do the speed limit.
Your modem isn't an RPI model by any chance?
-dw
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