Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!wasatch!cs.utexas.edu!uunet!bywater!scifi!njs
From: njs@scifi.UUCP (Nicholas J. Simicich)
Newsgroups: comp.dcom.modems
Subject: Re: Binary file xfer and MNP
Message-ID: <706@scifi.UUCP>
Date: 27 Jul 89 15:05:14 GMT
References: <67728@yale-celray.yale.UUCP>
Reply-To: njs@scifi.UUCP (Nicholas J. Simicich)
Organization: Nick Simicich, Peekskill, NY
Lines: 13


Yes, this is generally true.  The line can be extremely slow, so
sending data to the modem can overrun it.  I frequently do binary data
transfer over a modem that uses error correction, and which does not
have flow control (because my computer does not support it).   

To make this work, you need to use a protocol which requires
end-to-end acknowledgements, and your modem must be able to buffer.
The maximum amount of unacknowledged data under the protocol must be
less than the buffering capacity of the modem.

-- 
Nick Simicich --- uunet!bywater!scifi!njs --- njs@ibm.com (Internet)