Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!shadooby!samsung!uunet!portal!cup.portal.com!Sullivan
From: Sullivan@cup.portal.com (sullivan - segall)
Newsgroups: comp.sys.amiga
Subject: Re: Amiga RS232 problems
Message-ID: <23888@cup.portal.com>
Date: 10 Nov 89 17:30:44 GMT
References: <3929@ur-cc.UUCP>
Distribution: na
Organization: The Portal System (TM)
Lines: 26

>I am having problems getting my amiga to interface correctly with the phone
>
>system they have here at my school.  The phone system is named ROLM.  The 
>problem
>is that the computer is not recognizing ANY of the data send out of the phone's
>built in modem.  It is supposed to be a standard RS232.  The amiga works ok on
>a regular modem.  Has anyone had experience with this problem or phone system.

Standard RS232 is an oxymoron.  Well, the problem depends on the software you 
are using.  If your ROLM system doesn't supply these signals, your cable should:

Pin 5 - Clear to Send  (connect to DTR if NC)
Pin 8 - Carrier Detect (connect to DTR if NC)

Make sure that pins 12...19, and 21...25 are all NC on the Amiga side.

>
>Also, is there a way I can get the motherboard in my computer updated. I think
>I have revision 4.1 or something like that. I'd like to get it updated since 
>someone told me that it might be a bug in the hardware.

It isn't a bug in the hardware.  New motherboards can be ordered from
Commodore.  (The cost would probably be similar to a new A500)  I've hooked
up my machine to many different serial machines.  Each one has required 
a different cable.  
-ss