[asterisk-users] Can I roll my own E911?

[Alex Balashov]

Michael Graves wrote:
> On Tue, 22 Apr 2008 11:46:29 -0500, Doug wrote:
> 
>> At 09:09 4/22/2008, Michael Graves wrote:
>>> On Mon, 21 Apr 2008 23:17:40 -0400, Adam Moffett wrote:
>>>
>>>> Assuming I only operate in one municipality (I do), and assuming I made
>>>> some sort of connection to the emergency services center in this area,
>>>> via SIP or a T1 or whatever, does asterisk have a way for me to send the
>>>> E911 address data?
>>> Others have certainly offered good responses and advice on the matter.
>>> But I have a slighlty different approach. I use a GSM gateway to
>>> provide what are effectively "cellular trunks" that provide 911 (and
>>> 411 for that matter) through a cellular carrier.
>>>
>>> It seems an inexpensive way to ensure 911 service in what is otherwise
>>> a 100% VOIP situation.
>>>
>>> Michael
>> Hey Michael,
>>
>> Sounds ingenuous.  Please elaborate.
>>
>> Do you fake a cellphone, or do you forward through
>> a cellphone.
>>
>> How do you register each phone number? 
> 
> There can be several approaches to the mechanics of this. Some more
> elegant than others IMHO.
> 
> You could use chan_bluetooth to connect an old cell phone. You can get
> a "Dock-n-talk" to bridge from the celullar to fixed line world.
> 
> I my case I bought a single port SIP-GSM gateway that takes a SIM card
> from my cellular provider. I then made the gateway a peer to my
> Asterisk. Voila...a GSM trunk. Add dialplan logic to route 411 and 911
> calls to that trunk and away you go.
> 
> Such gateways are available from 1 to 32 ports. Some are GSM - FXO
> while others are GSM - SIP/H.323. Some are even GSM - Skype. Just
> Google "GSM gateway" and follow the bread crumbs.
> 
> I'm half way through an article on the project that will eventually fin
> its way to www.smallnetbuilder.com. I find that I can help offset the
> cost of the project by writing it up properly for a publisher.

Great approach!

My question would be - is this actually compliant with the FCC E911 
regulations applicable to VoIP providers?

-- 
Alex Balashov
Evariste Systems
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