hi Evandro, Thank you for your reply. That helps!
best regards, Aldo On Wed, Sep 30, 2015 at 4:47 AM, Evandro Villaron Franceschinelli < [email protected]> wrote: > Hello Aldo, > > > > We used the open source Sipp to simulate this Sip client. > > > > In accordance with i2 architecture- NENA, the SIP client must send the > location information using two ways: > > - Directly into your body using the PIDF-LO (RFC 4119) Location > Object (LO). > > - Or by reference with Location Key (LK) through of new header > in SIP: Geolocation (RFC 5031), VPC uses this Key to obtain the location > information in consultation with the LIS (Location Information Server). > > > > These informations should be got by User Agent caller running an LCP - > Location Convey Protocol. LCP can be implemented adapting the DHCP (RFC > 4776 / RFC 6225) or via HELD protocol (RFC RFC 5985). The implementation > has to be done in UAC because of LIS with its LO information is located in > own ISP(Internet server provider) that the UA has access network, becoming > easier addressing this LIS. > > > > In i2 specification the interface between call server (in case the > OpenSIPS) and LIS isn't expected, because of the difficulty of > implementing. The difficulty is in various factors such as privacy, device > identification and mainly because the call server (OpenSIPS) doesn't know > the address of appropriate LIS, It is required of a search algorithm of > this LIS in the source ISP (the RFC 5896/7216 describes this algorimos, > however this algorithm is not as trivial). > > > > *In practice*, I can not provide any SIP client that has implemented the > LCP. > > For testing we used the Sipp to simulate this Sip client using these > mentioned RFCs, is attached the XML scenario file that we used in Sipp, > with the new Geolocation header and with PIDF-LO in the body, the > OpenSIPS needs only one to handle the emergency call. > > > > best regards > > > > Evandro Villaron >
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