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From: mroddy@enmasse.UUCP (Mark Roddy)
Newsgroups: net.dcom
Subject: Re: Re: Noisy {{~r lines affecting 212A { modems
Message-ID: <296@enmasse.UUCP>
Date: Fri, 18-Jan-85 10:54:37 EST
Article-I.D.: enmasse.296
Posted: Fri Jan 18 10:54:37 1985
Date-Received: Sun, 20-Jan-85 05:09:04 EST
References: <145@pttesac.UUCP> <418@down.FUN>
Distribution: net
Organization: Enmasse Computer Corp., Acton, Mass.
Lines: 18

[ 212A line noise]

	It's a 212A feature- poor filtering capabilities. However there
	are two things to do - 
		1. hang up and call again, your
		next connection might be better. Also
		in this category is have the phone company
		check out both sides of the connection;
		Technically the phone company is supposed
		to provide data capability on the line if you use
		a certified 212A modem. I have actually gotten
		results from this approach- it turned out that
		one of our lines had a second live connection
		on it, once disconnected data quality was restored.

		2. use parity- most everybody configures
		for no parity, consequently even this limited
		error checking is circumvented.