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List:       linux-ha-dev
Subject:    [Linux-ha-dev] Re: Doubts regarding null modem cable connections
From:       Alan Robertson <alanr () unix ! sh>
Date:       2001-11-11 13:14:09
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karunakar reddy wrote:
> 
> Hi,
> we have got two types of wiring diagrams for null modem cable.one which supports \
> hardware handshaking and other which doesnt support hardware handshaking( for both  \
> RS-232  D25 and D9). can anybody guide me which one i have to use for heartbeat \
> testing?

Use the hardware handshaking version.  Heartbeat requires hardware
handshaking (as do most interesting applications).

> do i need to write any serial port programmming?

No.

> i got wiring diagrams from the following link.
> http://www.epanorama.net/documents/pc/rs232cables.html

From that page, you want the "Null Modem Cable" diagram.

	-- Alan Robertson
	   alanr@unix.sh
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