[asterisk-users] [External] Question about the Geo Location support being added

[Dan Cropp]

Thank you George.

Also, thank you and everyone else involved for the work adding Geo Location in Asterisk.
Looking forward to the update.

In our case, all the agent messaging and several other features are handled by a separate server.
This external server would be responsible for deciding which GEO Location Info to use for the Originate.

  *   Agent has their own emergency, so use Agent’s GEO Location (require Agent to verify every time they login since many work remotely and will work from home or relatives homes).
  *   Agent monitoring video from several facilities around the country notices a fire in California facility so the GEO Location would be the California facility.
  *   Hospital Agent talking with patient in hospital room 1234 and patient has heart attack.  Agent has to be able to call 911 (GEO Location of hospital and room 1234), but they also have to be able to toggle between 911 call and the patients call.

It sounds like the inherited channel variables is exactly what I was looking for.  External application just passes the replacement values for these variables (_HNO in the example you used, along with many others).

Have an awesome day!

Dan


From: asterisk-users <asterisk-users-bounces at lists.digium.com> On Behalf Of George Joseph
Sent: Wednesday, July 27, 2022 12:35 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion <asterisk-users at lists.digium.com>
Subject: Re: [External] [asterisk-users] Question about the Geo Location support being added



On Wed, Jul 27, 2022 at 11:02 AM Dan Cropp <dan at amtelco.com<mailto:dan at amtelco.com>> wrote:
Looking at the Asterisk wiki
https://wiki.asterisk.org/wiki/display/AST/Asterisk+Geolocation+Implementation

Just FYI, I'm in the process of clarifying and adding more info.  Should be done Friday.

I see the dial plan support the GeolocProfileCreate and there is support for GEOLOC_PROFILE settings to be set on the dial plan.

We currently use AMI Originate support.  We may have dozens/hundreds of calls in the system and external to Asterisk, someone executes a behavior where we perform the Originate, if the party answers, we ConfBridge the necessary calls together.  It can be multiple calls and we never know when the total calls bridged together will need to be increased.  Because of the random increase in calls, we can’t use the Dial to bridge the parties together.

The GEO Location information for the original caller can vary significantly because they could be WebRTC.  We are planning to require the setup of the Geo Location for each call to be provided to us (either via the incoming call or it may be provided from third party software).  Either way, we will know what the GEO Location to use for the Originate.  Trying to wrap my head around the best way to achieve this.

A real scenario to test!!!  Thanks!

Using AMI Originate, is it possible to set the GEOLOC_PROFILE settings via the Variable header?

I've not tested this but you don't need to do it at all...

My thought would be to configure an outgoing Geo Location profile for the PJSIP endpoint, but it would have the minimum settings.

Actually it would have a template specifying replacement channel variables.

When sending the AMI Originate, provide all the adjustments to the GEOLOC_PROFILE settings via the Variable.

Is this possible or might there be a better way to achieve this?

It's possible but probably not needed.  Let's say you're using Civic Address and a direct originate to the remote party via Dial.   In the originate, you can specify regular, inherited channel variables with the official Civic Address parameters preceded by '_'.  Let's use HNO (house number) as an example.   You'd set _HNO=1633 in the originate and since it has the '_' prefix it's going to be inherited by the outgoing channel.   In the outgoing channel's profile/location, you'd set 'location_info = HNO=${_HNO}.  Of course there'd be more than just the HNO parameter set but it's the same technique.  The outgoing channel has a very generic location template populated with values received from the incoming channel.

Now, this isn't going to work if you're originating both calls and adding them to a bridge yourself but in this case, you have both channels at the same time so you can just add the incoming channel's location info  directly to the outgoing channel's variables as you originate the outgoing call.  Youdon';t need to create a new GEOLOC_PROFILE for the outgoing channel.

All of this assumes that I actually understood your situation correctly. :)

How are you getting the caller's info in the first place?

Alternatively, I could generate an internal local channel, configure the GeoLocProfile on it, configure all GEOLOC_PROFILE adjustments on it, then have it perform the Dial.  If the other end answers or not, treat it exactly as we currently do using the Originate.

Sounds more complicated than it needs to be.


Dan

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