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VoIP Emergency Calling Support Telcordia Contacts: Nadine Abbott (732) 758-5257 An SAIC Company Provided to support discussions in.

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Presentation on theme: "VoIP Emergency Calling Support Telcordia Contacts: Nadine Abbott (732) 758-5257 An SAIC Company Provided to support discussions in."— Presentation transcript:

1 VoIP Emergency Calling Support Telcordia Contacts: Nadine Abbott (732) 758-5257 nabbott@telcordia.com An SAIC Company Provided to support discussions in the NENA VoIP Migratory WG April 13, 2004

2 VoIP Migration (Intermediate) Proposal – nba Telcordia Technologies Proprietary - Internal use only. See proprietary restrictions on title page. 2 Population of Routing Location Databases for VoIP LMdb is populated with LO to physical location “wiremaps.” DNS RDB is populated with routing to LGW. LGW RDB is populated with mapping of LO to ESGW and pool of ESQKs. SRDB is populated with ESQK to ESN/PSAP mappings. ALI DB is populated with ESQK to LGW mappings. PSAP E9-1-1 Selective Router User Agent ESGW ESQK = Emergency Services Query Key (associated with LGW & PSAP) & allocated to a particular emergency call instance RDB = Routing Data Base LMdb = Location Mapping database (formerly LIS?) SRDBALI DB DBMS MSAG VoIP domain Emergency Services Provider Network Call server/ proxy LGW ESQK  ESN ESQK LGW LMdb [LIS] DNS RDB civic or geo  LGW LGW RDB civic or geo  ESGW, ESRN & ESQK DHCP

3 VoIP Migration (Intermediate) Proposal – nba Telcordia Technologies Proprietary - Internal use only. See proprietary restrictions on title page. 3 VoIP Location Object Validation VoIP Location Mapping database (e.g., LIS) requests validation of location objects against MSAG. PSAP E9-1-1 Selective Router User Agent ESGW LO = geographic or civil location object LMdb = Location Mapping database 1. Location validation request (civil LO) SRDBALI DB DBMS MSAG 2. LO 1 3. Valid/error 4. Location validation response (valid/error) VoIP domain Emergency Services Provider Network LGW LMdb [LIS] Call server/ proxy

4 VoIP Migration (Intermediate) Proposal – nba Telcordia Technologies Proprietary - Internal use only. See proprietary restrictions on title page. 4 User Agent populated with VoIP Location One example of DHCP assisted download of Location Object to User Agent/IP device. PSAP E9-1-1 Selective Router User Agent ESGW 2. Stores LO 1. LO LGW SRDBALI DB DBMS MSAG VoIP domain Emergency Services Provider Network DHCP= Dynamic Host Configuration Protocol server LMdb = Location Mapping database LO = geographic or civil location object Call server/ proxy LMdb [LIS] DHCP

5 VoIP Migration (Intermediate) Proposal – nba Telcordia Technologies Proprietary - Internal use only. See proprietary restrictions on title page. 5 VoIP Emergency Call (1) PSAP E9-1-1 Selective Router UA ESGW/ TGW SRDBALI DB VoIP domain(s) Emergency Services Provider Network 3. INVITE (sos@us.vt. LGWski, LO)sos@us.vt. LGWski 4. INVITE (sos@us.vt.LGWski, tel.uri *, LO, VoIP Provider ID(s) or History)sos@u In I2, Call server/proxy & must provide tel.uri if not provided by UA. LGW must convert tel.uri to E.164 CBN. Call server/ proxy 1.DNS query (LO) 2.Resp=sos@us.vt. LGWski LGW

6 VoIP Migration (Intermediate) Proposal – nba Telcordia Technologies Proprietary - Internal use only. See proprietary restrictions on title page. 6 VoIP Emergency Call (2) PSAP E9-1-1 Selective Router UA ESGW/ TGW LGW SRDBALI DB VoIP domain(s) Emergency Services Provider Network 5. Redirect to sos@us.vt.ESGWsos@us.vt.ESGW.ES RN, ESQK LGW = Location Gateway Server ESGW = Emergency Services Gateway (signaling and media) ESRN = Emergency Services Routing Number (identifies tandem) ESQK = Emergency Services Query Key LGW saves & logs emergency call info. Call server/ proxy 5a. Alt: Invite (ESQK, sos@us.vt.ESGW.ESRN) sos@u

7 VoIP Migration (Intermediate) Proposal – nba Telcordia Technologies Proprietary - Internal use only. See proprietary restrictions on title page. 7 VoIP Emergency Call (3) PSAP E9-1-1 Selective Router UA ESGW/ TGW LGW SRDBALI DB VoIP domain(s) Emergency Services Provider Network ESGW = Emergency Services Gateway (signaling & media) ESQK = Emergency Services Query Key LGW = Location Gateway Server 5. Call Setup (Cd=911, Cg=ESQK) 6. ESQK 7. ESQK 8. ESQK 9. CBN, LO, VoIP Provider ID(s)? 10. CBN, LO, VoIP Provider ID(s)? Call server/ proxy

8 VoIP Migration (Intermediate) Proposal – nba Telcordia Technologies Proprietary - Internal use only. See proprietary restrictions on title page. 8 Call Server/Proxy Assisted VoIP Location One example of DHCP assisted download of Location Object to User Agent/IP device. PSAP E9-1-1 Selective Router User Agent ESGW 1. eLIS, eLGW LGW SRDBALI DB DBMS MSAG VoIP domain Emergency Services Provider Network DHCP= Dynamic Host Configuration Protocol server LMdb = Location Mapping database LO = geographic or civil location object Call server/ proxy LMdb [LIS] DHCP

9 VoIP Migration (Intermediate) Proposal – nba Telcordia Technologies Proprietary - Internal use only. See proprietary restrictions on title page. 9 VoIP Emergency Call (1 alternate) PSAP E9-1-1 Selective Router UA ESGW/ TGW SRDBALI DB VoIP domain(s) Emergency Services Provider Network 1. INVITE (client ID, sos@domain, eLIS, eLGW) sos@d In I2, Call server/proxy & must provide tel.uri if not provided by UA. LGW must convert tel.uri to E.164 CBN. Call server/ proxy 1.DNS query (LO) 2.Resp=sos@us.vt. LGWski LGW LMdb [LIS] 3. Query (client ID) 4. Response (LO) 2. Query (client ID, eLIS, tel.uri) 5. Response (ESQK, sos@us.vt.ESGW.ESRN) LGW saves & logs emergency call info.

10 VoIP Migration (Intermediate) Proposal – nba Telcordia Technologies Proprietary - Internal use only. See proprietary restrictions on title page. 10 VoIP Emergency Call (2 alternate) PSAP E9-1-1 Selective Router UA ESGW/ TGW LGW SRDBALI DB VoIP domain(s) Emergency Services Provider Network 5. Invite (ESQK, sos@us.vt.ESGWsos@us.vt.ESGW.ESRN) LGW = Location Gateway Server ESGW = Emergency Services Gateway (signaling and media) ESRN = Emergency Services Routing Number (identifies tandem) ESQK = Emergency Services Query Key LGW saves & logs emergency call info. Call server/ proxy

11 VoIP Migration (Intermediate) Proposal – nba Telcordia Technologies Proprietary - Internal use only. See proprietary restrictions on title page. 11 VoIP Location Validation & CBN Updates VoIP Location Information Server (LIS) requests validation of location objects against MSAG and obtains routing information for the associated Emergency Services Gateway (ESGW)/PSAP. LIS sends location updates for local CBNs. PSAP E9-1-1 Selective Router UA ESGW 1. Update: ESQK, LGW, ESRN or ESN? SRDBALI DB DBMS MSAG 2.LO 1 3. Valid/error 6. Resp. (valid/error) VoIP domain Emergency Services Provider Network 5.ESQK, ESN 4.ESQK, LGW LGW Call server/ proxy

12 VoIP Migration (Intermediate) Proposal – nba Telcordia Technologies Proprietary - Internal use only. See proprietary restrictions on title page. 12 VoIP Location Validation & CBN Updates VoIP Location Information Server (LIS) requests validation of location objects against MSAG and obtains routing information for the associated Emergency Services Gateway (ESGW)/PSAP. LIS sends location updates for local CBNs. PSAP E9-1-1 Selective Router ESGW CBN = Call Back Number LO = geographic or civil location object 1. Loc. Valid. request (LO) SRDBALI DB DBMS MSAG 2.LO 1 3. Valid/error 4. Loc. valid. resp. (valid/error) VoIP domain Emergency Services Provider Network 5. Location updates (CBN, LO) 6. Loc. update. resp. (success/error) 7.CBN, ESN 8.CBN, ESN LMdb [LIS] Call server/ proxy

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