Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!bloom-beacon!eru!luth!sunic!maxim!prc
From: prc@erbe.se (Robert Claeson)
Newsgroups: comp.dcom.modems
Subject: Re: UUCP Protocols, "efGxd" ... and a Telebit Trailblazer Question.
Message-ID: <1016@maxim.erbe.se>
Date: 12 Nov 89 12:38:24 GMT
References: <1014@icus.islp.ny.us> <747@lakart.UUCP>
Organization: ERBE DATA AB, Jarfalla, Sweden
Lines: 19

In article <747@lakart.UUCP> dg@lakart.UUCP (David Goodenough) writes:

>... One problem with RS232 is that it is not symmetrical: the terminal
>doesn't have a CTS equivalent to tell the modem to wait a while. Sure,
>you could drop DTR, but most modems will stop sending with extreme
>prejudice if you do that: they hang up :-(

Ahm, the high-speed modems we use here (V.32 modems with MNP class 9)
can be set to use many different flow-control schemes. Aside from not
using flow control at all, they can also be set to use unidirectional
and bidirectional xon/xoff and h/w flow control (unidirectional: as per
the intended use of the RS232C standard; bidirectional: modem uses CTS
and terminal uses RTS to tell each other when they're ready to receive).
We use the latter. We have tried using the uucp 'e' protocol over such a
link (with MNP enabled). No errors at this time.

-- 
          Robert Claeson      E-mail: rclaeson@erbe.se
	  ERBE DATA AB