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From: rrd@hpfcso.HP.COM (Ray Depew)
Newsgroups: comp.sys.handhelds
Subject: Re: Help please connecting 48 to Hayes modem
Message-ID: <7360067@hpfcso.HP.COM>
Date: 8 Feb 91 16:41:53 GMT
References: <7486@jhunix.HCF.JHU.EDU>
Organization: Hewlett-Packard, Fort Collins, CO, USA
Lines: 27

Dr. William B. Busa reports:

	>In attempting to use Bill Gribble's NRTS terminal emulator I've
>run into big trouble interfacing my 48 to my Hayes Smartmodem 1200. I'm
>not sure if the problem resides in the cabling, configuration switches,
>IOPAR, or what, so here's my condition:
  
>I've constructed a 9-pin to 25-pin adapter to connect my *genuine* HP
>cable to the Hayes. It is wired as follows (using the standard 9 and 25
>pin numbering):

[etc.]

>In this configuration, when I place the string "ATDT918005551212" on the
>stack and hit XMIT, the SD (send data) light on the Hayes blinks, but the
>modem does not dial and nothing happens. A "1" is placed on the stack by
>XMIT. When I next perform BUFLEN, a 0 is returned to level 2 and a 1 is
>returned to level 1. 

I don't have my Hayes manual with me, so I don't remember what the DIP 
switches change, but I wonder if setting system flag -38 would help?  This
is the "append linefeed" flag, and causes the 48 to end each line with a
CR/LF, not just a CR.  I'm suggesting this on the possiblility that the
Hayes is looking for both a CR and a LF.

-- Ray
rrd@hpfitst1.hp.com