Use PPP through a X.25 PAD

From: unrza3@cd4680fs.rrze.uni-erlangen.de (Markus Kuhn)
Subject: Re: PPP or SLIP through PAD (X.29/X.25)
Date: Mon, 5 Apr 1993 19:30:17 +0200
Organization: Regionales Rechenzentrum Erlangen, Germany

Does anybody have experience with "tunneling" PPP and SLIP through the PAD-service (X.29 over X.25)? What I want is to let people dial up their PAD-service and send their PPP/SLIP packets across the X.25 network into the PAD-login of my UNIX-machine. This should be possible, but I guess the PAD-parameter configuration is critical??

Yes, that's of course possible, because that's the way I use PPP. Use the PAD parameters for the following settings:

no escape character 1:0

local echo off 2:0

flow/control: RTS/CTS 5:2 (this is perhaps not a standard X.3 parameter)

PAD should not react on XON/XOFF signals 12:0

Other important values might be 3:0 4:1 9:0 10:0 13:0 14:0 15:0.

You need a PAD that supports CTS/RTS flow control, because I don't know about PPP software that supports XON/XOFF (although this would be possible with the right async map).