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echo: locsysop
to: Geoff Armstrong
from: Rod Speed
date: 1994-04-13 07:43:06
subject: Pollaxing during Polling

GA>> Could you please look in you binkley.log and see what's happening
GA>> with my packet xmission? When my system sends its outgoing packet
GA>> (usually small ie less than 4k) it gets all manner of zmodem retries
GA>> due to CRC errors. The larger files I get from you process without
GA>> any CRC errors. So most likely it is in my ZModem send.

RS> The usual cause of that symptom, uploads awful, downloads fine, is
RS> that you dont have the handshaking between the modem and the comms
RS> prog right. On an upload that means that the modem cant tell the
RS> comms prog to pause and so data gets lost, giving a visible symptom
RS> of a Zmodem error, CRC errors. Doesnt affect downloads coz the modem
RS> doesnt need to tell the comms prog to pause, so it doesnt matter if
RS> it cant.

RS> You want hardware handshaking in the modem and the comms prog.

GA> I've looked, but there is no setting for handshaking in FrontDoor
GA> that I can see. Sounds like a likely candidate, though.

You are looking in the wrong place. FroDo uses a fossil for the direct
control of the modem, most people are using either X00 or BNU. Its there
you should be looking for the flow control stuff.

GA> I will try Binkley again, and see if that does anything for me.

I cant stand it myself, shit house docs and pathetic user interface.
OTOH if you use PPoint to set it up for you, and throw PPoint away, that
is one approach.

GA>> Also, sometimes after an attempted session (due to BUSY returned or
GA>> something) my modems "Originate" light is out,
indicating that the
GA>> modem is set to "Answer" mode. Also when this happens,
the modem is
GA>> continuously trying to lock on, scanning up and down. I can hear the
GA>> busy tone of the unsuccessful call over the top (underneath?). The
GA>> modem won't then retry to dial, it just leaves the line looped until
GA>> manual intervention.

RS> Sounds like just a brain dead modem. Didnt you say you were using
RS> those Exicom specials ?

GA> Yes, chunks of shit they are. Are Exicom and NetComm related?

Nope. Forget who did the actual modem design in that case, whether it
was Exicom themselves or if it was rebadged. I do remember the modem was
a bit strange in some ways.

--- PQWK200
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