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?
[1] http://c.ymcdn.com/sites/www.nena.org/resource/collection/2851C951-69FF-40F0-A6B8-36A714CB085D/NENA_08-001-v2_Interim_VoIP_Architecture_i2.pdf On Fri, Apr 19, 2013 at 2:51 PM, Terry Brummell <[email protected]> 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 > possibility. > > So I'm wondering if anyone else has attempted this. > > Kind Regards, > Chris > > -- > _____________________________________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > New to Asterisk? Join us for a live introductory webinar every Thurs: > http://www.asterisk.org/hello > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users >
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