[asterisk-users] E911 Voip Trunking
cnighswonger at foundations.edu
Fri Apr 19 14:29:29 CDT 2013
Section 6.5.2 (v4 interface) of NENA's v2 Interim Voip Architecture
Standard shows a ladder diagram of their SIP flow which seems to match
standard SIP. Maybe I'm oversimplifying it?
On Fri, Apr 19, 2013 at 2:51 PM, Terry Brummell <terry at brummell.net> wrote:
> E911 does not follow the standard SIP RFC. That would be a good reason
> that they couldn't/wouldn't do it. Now that I say that I should qualify it
> and say "NG911 (or ESINet) does not follow SIP RFC"
> http://en.wikipedia.org/wiki/Next_Generation_9-1-1. That is not saying
> your county is not using standard SIP for E911, it just wouldn't be
> considered NG911.
> *From:* Chris Nighswonger
> *Sent:* Fri 4/19/2013 11:41 AM
> *To:* Asterisk Users Mailing List - Non-Commercial Discussion
> *Subject:* [asterisk-users] E911 Voip Trunking
> During the course of a conversation with an member of the IT group who
> handles the E911 center for our county, I learned that all of the county's
> E911 is voip based. This got me to wondering why we could not just
> configure up a SIP or some such trunk directly to the E911 center to handle
> our emergency traffic. The county seems interested in exploring the
> So I'm wondering if anyone else has attempted this.
> Kind Regards,
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