Using PIDF-LO in emergency calls - Amazon Chime SDK

Using PIDF-LO in emergency calls

Amazon Chime SDK Voice Connectors support enhanced 911 (E911) calling. When you place emergency calls through a Voice Connector, you can send caller location information by including a GEOPRIV Presence Information Data Format Location Object (PIDF-LO) in your SIP requests. The object must include the Geolocation-Routing header, set to Yes. We strongly recommend validating the address. If you don't use addresses or routing numbers, address validation may be carried out at the start of a 911 call to ensure it is routed to the appropriate Public Safety Answering Point (PSAP), meaning help may take longer to arrive.

The following example shows a SIP invite with a PIDF-LO object that includes an address.

INVITE sip:911@abcdef1ghij2klmno3pqr4.voiceconnector.chime.aws;transport=TCP SIP/2.0
Via: SIP/2.0/TCP IPaddress:12345;rport;branch=z9hG4bKKXN2D41yvDUKH
From: +15105186683 ><sip:+15105186683@IPaddress:12345>;tag=tag
To: <sip:911@abcdef1ghij2klmno3pqr4.voiceconnector.chime.aws>;transport=TCP
Call-ID: 12abcdef-3456-7891-012g-h7i8j9k6l0a1
CSeq: 43615607 INVITE
Contact: <sip:IPaddress:12345>
Max-Forwards: 70
Geolocation-Routing: Yes
Geolocation: <cid:a1ef610291734f98a467b973819e90ed>;inserted-by=vpc@ng911.test.com
Content-Type: multipart/mixed;boundary=unique-boundarystring
Content-Length: 271
Accept: application/sdp, application/pidf+xml

--unique-boundarystring
Content-Type: application/sdp
v=0
o=FreeSWITCH 1636327400 1636327401 IN IP4 IPaddress
s=FreeSWITCH
c=IN IP4 IPaddress
t=0 0
m=audio 11398 RTP/SAVP 9 0 101
a=rtpmap:0 PCMU/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=sendrecv
a=ptime:20

--unique-boundarystring
Content-Type: application/pidf+xml
Content-ID: <pidftest@test.com>
<?xml version="1.0" encoding="utf-8"?>
<presence xmlns="urn:ietf:params:xml:ns:pidf"
xmlns:gp="urn:ietf:params:xml:ns:pidf:geopriv10"
xmlns:bp="urn:ietf:params:xml:ns:pidf:geopriv10:basicPolicy"
xmlns:ca="urn:ietf:params:xml:ns:pidf:geopriv10:civicAddr"
entity="sip:amazontest911@test.com">
<tuple id="0">
    <status>
    <gp:geopriv>
        <gp:location-info>
        <ca:civicAddress>
            <ca:country>US</ca:country>
            <ca:A1>WA</ca:A1>
            <ca:A3>Seattle</ca:A3>
            <ca:HNO>1812</ca:HNO>
            <ca:RD>Example</ca:RD>
            <ca:STS>Ave</ca:STS>
            <ca:NAM>Low Flying Turtle</ca:NAM>
            <ca:PC>98101</ca:PC>
        </ca:civicAddress>
        </gp:location-info>
    </gp:geopriv>
    </status>
    <timestamp>2021-09-22T13:37:31.03</timestamp>
</tuple>
</presence>
--unique-boundarystring--