ECRIT%20architecture

1
ECRIT architecture

• Henning Schulzrinne
• Dept. of Computer Science
• Columbia University

2
UA recognition UA resolution
mapping
9-1-1
leonianj.gov
INVITE sippsap_at_leonianj.gov To
urnservicesos ltlocationgt
INVITE sippsap_at_leonianj.gov To
urnservicesos ltlocationgt
3
UA recognition proxy resolution
mapping
9-1-1
provider.com
INVITE urnservicesos To urnservicesos ltlocat
iongt
INVITE sippsap_at_leonianj.gov To
urnservicesos ltlocationgt
4
UA recognition proxy resolution(proxy location
determination)
mapping
9-1-1
provider.com
INVITE urnservicesos To urnservicesos
INVITE sippsap_at_leonianj.gov To
urnservicesos ltlocationgt
how does proxy insert location? redirect?
5
Proxy recognition proxy resolution
mapping
9-1-1
provider.com
INVITE sippsap_at_leonianj.gov To
sip911_at_provider.comuserphone Location
ltlocationgt
INVITE sip911_at_provider.comuserphone To
sip911_at_provider.comuserphone