[comp.dcom.modems] Layers and Multitech V.32/v.42 modems

junk1@cbnews.cb.att.com (eric.a.olson) (04/11/91)

    I have AT&T 620 and 730 terminals connected to
    Multitech Multimodem v.32 modems (also capable of
    v.42).  I cannot get these to run layers (xt) on our
    system V R 3.2.2/3.2.3 386's.
    I've got them communicating at 9600 baud,
    set for xon/xoff on the terminal end, RTS/CTS on the computer end,
    and connected to device nodes which supposedly support hardware flow
    control;  I can get into layers, but can't create more than one
    layer without locking up.  Does anyone know or can they suggest
    the proper settings for flow control, etc. to get layers to work?

rwhite@nusdecs.uucp (Robert White) (04/12/91)

Layers on Modems et-al.

First, if you can arange it so that you don't do Xon/off flow
control anyware on the circuit you will be much happier.
If your modem is eating the characters many of the layers
control packets can acutally stop the modem transmitions.
You hang.

If you can't get rid of Xon/off then use the setup option
"Encoding On" (Which I have on my 630, and understand to
be standard(tm) to all layering devices, but your mileage
may vary) so that all of the control characters are encoded
for transmission within the printable character set (al la
kermit).  This setting should make many of your problems
go away.

(Note, only the setting inside the terminal is necessary.
there is noplace else it occurs.  The host system gets
the options from the terminal durring protocol initalization.
It is a connection-by-connection deal,)
-- 
Robert C. White Jr.    |  The degree to which a language may be
Network Administrator  |   classified as a "living" language
National University    |  is best expressed as the basic ratio
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