> > > > We operate fixed line, no mobile service. So we know the exact location > (postal address + building identifier (EGID)) at the time of the call. > > It's also not about routing. Calls to the nearest PSAP are > source-routed. So if a customer dials 112 we translate this to the > nearest PSAP operating emergency service 112. >
Are you developing ESRP (Emergency Service Routing Proxy)? https://www.dec112.at/en/dec112-what-is-an-esrp/ If not, then you need to send the call to ESRP and provide the user's device location. Who is provide ESRP in your region? > I'm just anticipating what could go wrong or cause delays in the > chain to find out the best way to react to such issues. > > Kamailio => HTTP => HELD-Server(inhouse) => HTTP => LIS-Server > If you are a fixed-line carrier then you always know where the user's device is located. Just required to populate your LIS database. All timing looks for me predictable. > PS: What I could not find in the Swiss NG112 documentation: If > transmitting the location to the LIS server fails. Is the Geolocation > header just ommited? Or is there a way to tell the PSAP there was a > failure transmitting the location to the LIS Server? > I am not an ESRP developer, but why do you need a dedicated HELD server? Why LIS is not enough? https://www.rfc-editor.org/rfc/rfc5985#page-5 [image: image.png] In this case, your LIS server should contain static information about the user's device location. And case "If transmitting the location to the LIS server fails" will never happen.
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