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TI RS232 to ANY MODEM [message #79217] Sun, 02 June 2013 23:14
ees is currently offline  ees
Messages: 26
Registered: May 2013
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Message-ID: <965@vax135.UUCP>
Date: Fri, 15-Feb-85 09:24:21 EST
Article-I.D.: vax135.965
Posted: Fri Feb 15 09:24:21 1985
Date-Received: Sat, 16-Feb-85 06:23:43 EST
Organization: AT&T Bell Labs, Holmdel, NJ
Lines: 29


The following table gives the connections for the standard NULL-MODEM as
sold by most computer supply comanies.


		1	1
		2	3
		3	2
		4,5	8
		6,22	20
		7	7
		8	4,5
		20	6,22
		22	4,5

This will work with most modem without modification. I use a Hayes 1200
and this. I have also used an ATT made by Penril that neesd pin 20 (DTR)
at the modem end tied to 6 (DSR) of the same end. Others I know who use
various modems from acoustic couplers to dirrect connect use it one of
two ways.

Gene Sammpieri
ATT-Bell Labs
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