I stopped working in the telephony industry about the same time the VoIP
people were resolving their 911 issues.  The last time I checked, the
goals were to present the local 911 operators with a local phone number.
I believe that they do that now.  I'm not sure how they finally resolved
the issue.  Hopefully somebody else on the list can chime in with the
answer.

-Mike
 
> -----Original Message-----
> From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On
Behalf
> Of Mark E. Skeels
> Sent: Wednesday, August 15, 2007 9:50 AM
> To: Microcontroller discussion list - Public.
> Subject: Re: [EE]DSL Modem question
> 
> Let me add a bit more info: the DSL modem is connected to a wireless
> network. It's secured with conventional encryption and passwords; I
> don't have details at the moment.
> 
> If someone attempted a VOIP over the wireless, though, would that
> automatically identify with the Phone Line Number?
> 
> I know nothing about VOIP.....
> 
> Mark
> 
> Michael Dipperstein wrote:
> > Mark,
> >
> > As others have stated, a standard DSL modem cannot dial out.  Even
if
> > there weren't any filters to prevent signal from the modem from
leaking
> > into the POTS spectrum, DSL modems are not designed to be able to
take a
> > phone line off hook.
> >
> > My best guesses to the source of the problem are:
> > 1. The FAX machine is calling out.  I would think that the FAX
handshake
> > would be audible to the 911 operators.
> > 2. Somebody else is using the phone line.  Somebody could have
accessed
> > it from the Church's phone room or a cross connect box.
> > 3. The computer hooked to the modem is using a VOIP service to make
the
> > calls.
> >
> > Three is a real long shot.  One and two are not so far fetched.  If
> > somebody else is using the church's phone line, you might see a
number
> > of unusual calls that have been made, or there might be a number of
911
> > hangups from other phones in the same cable bundle.
> >
> > -Mike
> >
> > -----Original Message-----
> > From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On
Behalf
> > Of Mark E. Skeels
> > Sent: Wednesday, August 15, 2007 6:35 AM
> > To: Microcontroller discussion list - Public.
> > Subject: Re: [EE]DSL Modem question
> >
> > Heres' the nature of my question:
> >
> > The local Sherriff received several 911 hangup calls from our church
> > building in the last 36 hours.
> >
> > The line used was the one the DSL modem is connected to. There is
also a
> >
> > FAX machine.
> >
> > The building is empty (of people) most of the time.
> >
> > We are trying to figure out how the 911 call could have been made.
> >
> > Thanks,
> > Mark
> >
> >
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