[cisco-voip] Need some facts regarding DID's, Enterprise VoIP and LATAs

[Mark Holloway]

Although companies do this, it's not compliant.

-----Original Message-----
From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Paul Choi
Sent: Thursday, August 02, 2007 12:30 PM
To: Robert Kulagowski; Dark Fiber
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] Need some facts regarding DID's, Enterprise VoIP
and LATAs

What you could do is, if management would be kosher
with this, have several dedicated 911 red phones with
straight POTS lines attached to them bypassing any 911
router business whatsoever. This is what one of our
customers did for several of their offices and they
seem to work well with the solution.

--- Robert Kulagowski <bob at smalltime.com> wrote:

> If you're going to provide for 911 at each location,
> then you're going 
> to need to get _something_ at that site.  It can be
> as simple as a 
> standard analog line that you connect to a FXO port
> on a voice gateway, 
> with appropriate routing in CM to send a 911 call
> out from that location.
> 
> PSAPs (Public Safety Answering Points) aren't
> necessarily linked to each 
> other, so if someone in Houston is having a heart
> attack, and all calls 
> go out from Dallas, there's nothing much that the
> PSAP in Dallas can do 
> about it.
> 
> You don't need to renumber, or give users in your
> other locations 
> numbers "DIDs" in those locations.  Just make sure
> that a call in 
> Houston goes out through Houston, and a call in
> Dallas goes out through 
> Dallas, etc.  Which pretty much means that you're
> going to need a 
> "circuit" at those locations.
> 
> One caveat:  you may be able to get someone like one
> of the E911 VoIP 
> service providers involved (www.911enable.com is
> one); you'd setup 
> something like a SIP trunk and route e911 calls to
> them.  You'd tell 
> them which DIDs are located in which city, and allow
> them to handle the 
> 911 call and send it to the correct PSAP.  (In which
> case 911 calls 
> wouldn't traverse your PRI - they'd go out over your
> ethernet to the 
> provider)
> 
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> 



       
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