Re: Network Device for GS?

[shack@southwind.net (Randy Shackelford)]

In article <Pine.GSO.3.95.iB1.0.991026004303.11651A-100000@halifax.chebucto.ns.ca>,
Tony Cianfaglione  <ab616@chebucto.ns.ca> wrote:

>I only paid 50 cents for it with all its cables and such in the box but
>with no manuals and since I use a regular modem with my IIc and GS so it
>was more of a curiousity purchase.

I'd take one for $.50 but AVs only have software support for 14400 with 'em.
PMacs can do 33600. I have cable going to my 840av these days so the modem
and port don't see much action any more though.

>However, it brings something else to mind.
>
>First, as it has 9 pins instead of 8, am I to assume that I would need a
>special port in the Mac to run this thing?  Also, if a Mac Classic (sorry
>if I am asking this on a II newsgroup) is frying modems, would it mean
>that, maybe, that Mac Classic has the corresponding port built in and it
>is frying a regular modem?

Nope for two reasons: Classics don't have a Geoport compatible serial port,
plus even modem ports that support it work with normal modems pretty as you
please. It wouldn't go over so hot otherwise.

>The reason I am asking is that a friend from our user group asked me to
>help a student friend of his with a Mac Classic he bought from a local
>university but it fried 2 - 14,400 modems in a row while I tried to get
>him on the Internet via ZTerm.  I couldn't figure out why the modems fried
>but could it be that this Mac Classic was designed to run a GeoPort
>Telecom Interface which could handle the 5v pin?

No since a Classic can't use a Geoport, plus a Geoport friendly modem port
works with normal modems as I mentioned.

>I am assuming the regular serial port would be removed and replaced with
>this GeoPort configuration.  Would anyone have a pinout for either the
>GeoPort interface and the Mac serial port necessary to connect to it or
>both?

The only boxes which can utilize a Geoport already have a compatible port
built in. Like I say, look at the modem port on an AV or any PMac and you'll
see that it's keyed and has nine pins. No others do. The AVs use the DSP to
work the Geoport while PMacs have a fast enough CPU to do it. No other Macs
can use it.
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