Re: (PM) Courier I-Modem to PM3 DOVBS?

Christopher Masto (chris@netmonger.net)
Fri, 26 Jun 1998 12:58:23 -0400

On Thu, Jun 25, 1998 at 09:08:19PM -0400, Thomas C Kinnen wrote:
> >I seem to have encountered a sticky situation. Apparently the USR
> >Courier I-modem (their top-of-the line ISDN TA) hangs up before
> >establishing a 56k data-over-voice ISDN connection to the PM3. It
> >seem not to like the PM3's attempt to answer it as an analog call, and
> >drops the instant the initial v.8bis tone is heard.
> >Is this just me? Has anyone else even tried this? Livingston tech
> >support apparently isn't willing/able to test it in their lab.
>
> I had this EXACT same problem about 7 months ago except it was with every
> DOV call. After a three month fight with sprint and finally telling them we
> were going to the PUC one of ther high level techs went to the CO and and it
> was working 5 minutes later. The only answer I could get was "Courpt
> satatic data in the switch (DMS-100)" no other explination.

We have dozens of customers happily using DOV with ZyXEL, Motorola,
Adtran, 3Com, and other TAs. We're on a 5ESS. This customer is able
to connect DOV to another ISP in the same exchange (they use Ascend),
so it's not his provisioning either. In fact, he's able to connect to
a PM2/5BRI we have, so I'm convinced that it doesn't like the analog
modem tones it hears when it's expecting the 3.1khz or whatever that
tone is you get when you call a PM2 BRI on voice.

Livingston says it works, but they won't test it in the lab to confirm
that it works. I think they're wrong; I suspect their
interoperability testing was only for data.

I want to know if there's anyone out there who's gotten an I-modem to
connect to a PM3 using DOV.

If there's an S register or something on the I-modem that can make
this work, 3Com is not being very forthcoming with my customer.

Of course, the funniest part is that he's tried yet another ISP that's
using Total Control equipment and he can't connect to them either.

-- 
Christopher Masto        Director of Operations      NetMonger Communications
chris@netmonger.net        info@netmonger.net        http://www.netmonger.net


   Microsoft now is in 40 percent of American households. If they can
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   - BARRY RANDALL, Analyst, Dain Bosworth
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