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adam at plexicomm.net
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 Posted: Mon Apr 21, 2008 10:17 pm Post subject: [asterisk-users] Can I roll my own E911? |
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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? |
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abalashov at evaristes...
Guest
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| Posted: Tue Apr 22, 2008 5:27 am Post subject: [asterisk-users] Can I roll my own E911? |
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Adam Moffett wrote:
| Quote: | 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
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PSAPs won't do VoIP. In fact, they won't do anything like PRI; for the
most part, T1s to PSAPs are some type of E&M / FGB / FGD.
I am also not sure that you can actually get an access circuit to a
PSAP. It may be that the only way to reach one is through 911 TCICs in
an SS7 interconnection IMT. Of course, all these E911 companies have to
be able to dump calls into PSAPs somehow, but they probably ride the
services of some nationwide CLEC in order to do it.
| Quote: | does asterisk have a way for me to send the E911 address data?
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Asterisk does not have an ALI interface as far as I know. But it is
possible to patch the call through various appliances that do.
--
Alex Balashov
Evariste Systems
Web : http://www.evaristesys.com/
Tel : (+1) (678) 954-0670
Direct : (+1) (678) 954-0671
Mobile : (+1) (706) 338-8599 |
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abalashov at evaristes...
Guest
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| Posted: Tue Apr 22, 2008 6:21 am Post subject: [asterisk-users] Can I roll my own E911? |
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Alex Balashov wrote:
| Quote: | Adam Moffett wrote:
| Quote: | 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
|
PSAPs won't do VoIP. In fact, they won't do anything like PRI; for the
most part, T1s to PSAPs are some type of E&M / FGB / FGD.
I am also not sure that you can actually get an access circuit to a
PSAP. It may be that the only way to reach one is through 911 TCICs in
an SS7 interconnection IMT. Of course, all these E911 companies have to
be able to dump calls into PSAPs somehow, but they probably ride the
services of some nationwide CLEC in order to do it.
|
Also, even if you could pull this off, I don't see how rolling your own
E911 services (and associated reliability issues) could possibly be cost
-effective compared to using one of the E911 companies.
--
Alex Balashov
Evariste Systems
Web : http://www.evaristesys.com/
Tel : (+1) (678) 954-0670
Direct : (+1) (678) 954-0671
Mobile : (+1) (706) 338-8599 |
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mgraves at mstvp.com
Guest
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| Posted: Tue Apr 22, 2008 9:09 am Post subject: [asterisk-users] Can I roll my own E911? |
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On Mon, 21 Apr 2008 23:17:40 -0400, Adam Moffett wrote:
| Quote: | 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
--
Michael Graves
mgraves<at>mstvp.com
http://blog.mgraves.org
o713-861-4005
c713-201-1262
sip:mjgraves at pixelpower.onsip.com
skype mjgraves
54245 at fwd.pulver.com |
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Doug at NaTel.net
Guest
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| Posted: Tue Apr 22, 2008 11:46 am Post subject: [asterisk-users] Can I roll my own E911? |
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At 09:09 4/22/2008, Michael Graves wrote:
| Quote: | On Mon, 21 Apr 2008 23:17:40 -0400, Adam Moffett wrote:
| Quote: | 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
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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? |
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mgraves at mstvp.com
Guest
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| Posted: Tue Apr 22, 2008 11:58 am Post subject: [asterisk-users] Can I roll my own E911? |
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On Tue, 22 Apr 2008 11:46:29 -0500, Doug wrote:
| Quote: | At 09:09 4/22/2008, Michael Graves wrote:
| Quote: | On Mon, 21 Apr 2008 23:17:40 -0400, Adam Moffett wrote:
| Quote: | 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.
Michael
--
Michael Graves
mgraves<at>mstvp.com
http://blog.mgraves.org
o713-861-4005
c713-201-1262
sip:mjgraves at pixelpower.onsip.com
skype mjgraves
54245 at fwd.pulver.com |
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abalashov at evaristes...
Guest
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| Posted: Tue Apr 22, 2008 12:17 pm Post subject: [asterisk-users] Can I roll my own E911? |
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Michael Graves wrote:
| Quote: | On Tue, 22 Apr 2008 11:46:29 -0500, Doug wrote:
| Quote: | At 09:09 4/22/2008, Michael Graves wrote:
| Quote: | On Mon, 21 Apr 2008 23:17:40 -0400, Adam Moffett wrote:
| Quote: | 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
Web : http://www.evaristesys.com/
Tel : (+1) (678) 954-0670
Direct : (+1) (678) 954-0671
Mobile : (+1) (706) 338-8599 |
|
| Back to top |
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Mike at Trest.COM
Guest
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| Posted: Tue Apr 22, 2008 1:11 pm Post subject: [asterisk-users] Can I roll my own E911? |
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At 01:17 PM 4/22/2008, you wrote:
| Quote: | My question would be - is this actually compliant with the FCC E911
regulations applicable to VoIP providers?
|
IMHO and EXPERIENCE before FCC, this arrangement is NOT compliant
Reason: multiple subscribers using the same number
neither number nor name nor location can be
tied to a specific subscriber at the time of use.
You will need waivers on file from each client that acknowledges
the E911 service is verbal contact only and will not have a
fixed location or subscriber name associated with the number that
is seen by the E911 service provider. |
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sip at arcdiv.com
Guest
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| Posted: Tue Apr 22, 2008 2:18 pm Post subject: [asterisk-users] Can I roll my own E911? |
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Mike Trest - On Travel wrote:
| Quote: | At 01:17 PM 4/22/2008, you wrote:
| Quote: | My question would be - is this actually compliant with the FCC E911
regulations applicable to VoIP providers?
|
IMHO and EXPERIENCE before FCC, this arrangement is NOT compliant
Reason: multiple subscribers using the same number
neither number nor name nor location can be
tied to a specific subscriber at the time of use.
You will need waivers on file from each client that acknowledges
the E911 service is verbal contact only and will not have a
fixed location or subscriber name associated with the number that
is seen by the E911 service provider.
|
Technically, no. This might not suffice. FCC 05-116 sec37 states that a
call must be routed via ANI or pseudo-ANI via the dedicated Wireline
E911 Network (not wireless). Now, if this were interconnected to a
single wireline point, it MIGHT suffice, as the same section specifies
that you can use ANI or pseudo-ANI and need only provide appropriate
callback information for the PSAP.
Sec.38, however, states that you can accomplish this interconnection
either indirectly through a 3rd party, directly through the Wireline
E911 network, OR through "any other solution that allows a provider to
offer E911 service as described above." That 'any other solution' MIGHT
allow you to interconnect through a single point wireless IF you can
provide individual callback info to the PSAP.
N. |
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abalashov at evaristes...
Guest
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| Posted: Tue Apr 22, 2008 2:26 pm Post subject: [asterisk-users] Can I roll my own E911? |
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Mike Trest - On Travel wrote:
| Quote: | At 01:17 PM 4/22/2008, you wrote:
| Quote: | My question would be - is this actually compliant with the FCC E911
regulations applicable to VoIP providers?
|
IMHO and EXPERIENCE before FCC, this arrangement is NOT compliant
Reason: multiple subscribers using the same number
neither number nor name nor location can be
tied to a specific subscriber at the time of use.
You will need waivers on file from each client that acknowledges
the E911 service is verbal contact only and will not have a
fixed location or subscriber name associated with the number that
is seen by the E911 service provider.
|
But if you do get those waivers, it is compliant in principle, on that
basis, right?
--
Alex Balashov
Evariste Systems
Web : http://www.evaristesys.com/
Tel : (+1) (678) 954-0670
Direct : (+1) (678) 954-0671
Mobile : (+1) (706) 338-8599 |
|
| Back to top |
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JonP at inline.net
Guest
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| Posted: Tue Apr 22, 2008 2:40 pm Post subject: [asterisk-users] Can I roll my own E911? |
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Quoting Alex Balashov <abalashov at evaristesys.com>:
FCC / CRTC or not, I think the reality is voip and cellular has just
made a mess of the 911 system, and trying to make 911 fit all
situations is just not possible. If you can't speak and tell the
operator your actual address, essentially you are SOL, you also have
to take it on faith you get connected to the right 911 operations
center - how many cities have "main st" for example and would assume
you are local if that is all you could tell them.
Right now I wouldn't dream of a purely voip system for just that
reason, always at least one real line for emergencies.
| Quote: | Mike Trest - On Travel wrote:
| Quote: | At 01:17 PM 4/22/2008, you wrote:
| Quote: | My question would be - is this actually compliant with the FCC E911
regulations applicable to VoIP providers?
|
IMHO and EXPERIENCE before FCC, this arrangement is NOT compliant
Reason: multiple subscribers using the same number
neither number nor name nor location can be
tied to a specific subscriber at the time of use.
You will need waivers on file from each client that acknowledges
the E911 service is verbal contact only and will not have a
fixed location or subscriber name associated with the number that
is seen by the E911 service provider.
|
But if you do get those waivers, it is compliant in principle, on that
basis, right?
--
Alex Balashov
Evariste Systems
Web : http://www.evaristesys.com/
Tel : (+1) (678) 954-0670
Direct : (+1) (678) 954-0671
Mobile : (+1) (706) 338-8599
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Mike at Trest.COM
Guest
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| Posted: Tue Apr 22, 2008 3:26 pm Post subject: [asterisk-users] Can I roll my own E911? |
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Yes, if you have signed waivers, you may operate without fear of
FCC. Just be sure to have
physical paper in a file somewhere for each client in the event of an audit.
And, this will also satisfy you legal advisors to avoid liability in
lawsuit by a consumer towards
you for any crazy reason if they think that you provided inadequate
E911 service and failed
to advise the consumer regards proper use and expectations..
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mgraves at mstvp.com
Guest
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| Posted: Tue Apr 22, 2008 3:47 pm Post subject: [asterisk-users] Can I roll my own E911? |
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On Tue, 22 Apr 2008 13:17:43 -0400, Alex Balashov wrote:
| Quote: | | Quote: | 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.
|
Great approach!
My question would be - is this actually compliant with the FCC E911
regulations applicable to VoIP providers?
|
I could not even guess about such things. I provide the service to
myself for my home and home office.
For moral reasons I cannot do business with AT&T, who are the only
purveyor of POTS lines hereabouts. This was a significant part of my
motivation to find an alternative.
Michael
--
Michael Graves
mgraves<at>mstvp.com
http://blog.mgraves.org
o713-861-4005
c713-201-1262
sip:mjgraves at pixelpower.onsip.com
skype mjgraves
54245 at fwd.pulver.com |
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