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Proxy recognition & proxy resolution
9-1-1
mapping
INVITE sip:911@provider.com;user=phone
To: sip:911@provider.com;user=phone
INVITE sip:psap@leonianj.gov
To: sip:911@provider.com;user=phone
Location:
Accept-Contact: *;sip.service="urn:service:sos"
provider.com
PPT Version