VoIP Emergency Calling Support Telcordia Contacts: Nadine Abbott (732) 758-5257 Theresa Reese (732) 758-5244

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VoIP Emergency Calling Support Telcordia Contacts: Nadine Abbott (732) Theresa Reese (732) Anand Akundi (732) An SAIC Company Provided to support discussions in the NENA VoIP Migratory WG March 23, 2004

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 MSAG is populated with routing addresses (e.g., for each ESZ/ESN. Location Gateway Server (LGS) is configured with ESRN to ESQK mappings for each ESN it serves. SRDB is populated with ESQK to ESN/PSAP mappings. ALI DB is populated with ESQK to LGS PSAP E9-1-1 Selective Router User Agent/ IP device ESGW DHCP ESQK = Emergency Services Query Key (associated with LGS & PSAP) ESRN = Emergency Services Routing Number/Information (non-dialable), e.g., npa911xxxx or npa511xxxx. SRDBALI DB DBMS MSAG VoIP domain Emergency Services Provider Network Call server LGS ESZ  ESRN  {ESQKs} ESQK  ESN ESQK LGS LIS ESN  ESRN

VoIP Migration (Intermediate) Proposal – nba Telcordia Technologies Proprietary - Internal use only. See proprietary restrictions on title page. 3 VoIP Location Validation VoIP Location Information Server (LIS) requests validation of location objects against MSAG and obtains routing information for the associated Emergency Services Gateway (ESGW)/PSAP. PSAP E9-1-1 Selective Router User Agent/ IP device ESGW DHCP LO = geographic or civil location object ESRN = Emergency Services Routing Number/Information (non-dialable), e.g., npa911xxxx, for routing to ESGW (and to identify PSAP) ESGW = Emergency Services Gateway 1. Location validation request (LO) SRDBALI DB DBMS MSAG 2. LO 1 3. us.st.ESRN 4. Location validation response (us.st.ESRN) VoIP domain Emergency Services Provider Network Call server LGS LIS

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. Includes routing information to get to ESGW for appropriate Selective Router/PSAP. PSAP E9-1-1 Selective Router User Agent/ IP device ESGW DHCP 2. Stores LO & ESRN 1. LO and LGS SRDBALI DB DBMS MSAG VoIP domain Emergency Services Provider Network Call server DHCP= Dynamic Host Configuration Protocol server LIS= Location Information Server LO = geographic or civil location object LIS

VoIP Migration (Intermediate) Proposal – nba Telcordia Technologies Proprietary - Internal use only. See proprietary restrictions on title page. 5 VoIP Emergency Call See notes page. PSAP E9-1-1 Selective Router UA or IP device ESGW LGS SRDBALI DB VoIP domain(s) Emergency Services Provider Network Call server 1. VoIP Call Setup client ID, 2. VoIP Call Setup tel.url *, ESGW = Emergency Services Gateway (signaling and media) LGS = Location Gateway Server ESQK = Emergency Services Query Key 3. CBN *, LO, ESRN, VoIP Provider ID(s) or History 5. Call Setup (Cd=ESRN, Cg=ESQK) * Call server & ESGW must map “client ID” to a valid Call Back Number 6. ESQK 7. ESQK 4. ESQK 8. ESQK 9. CBN, LO, VoIP Provider ID(s) or History? 10. CBN, LO, VoIP Provider ID(s) or History? LIS

VoIP Migration (Intermediate) Proposal – nba Telcordia Technologies Proprietary - Internal use only. See proprietary restrictions on title page. 6 Alternative Scenario: VoIP Emergency Calls with LIS Assist to Obtain LO & Routing Includes query to LIS for LO and routing information. See notes page. PSAP E9-1-1 Selective Router UA or IP device ESGW LGS SRDBALI DB 2. Query (client ID) 3. Response (LO, ESRN) VoIP domain(s) Emergency Services Provider Network Call server 1. VoIP Call Setup client ID, LIS 4. VoIP Call Setup tel.url *, ESGW = Emergency Services Gateway (signaling and media) LGS = Location Gateway Server ESQK = Emergency Services Query Key 5. CBN *, LO, ESRN,, VoIP Provider ID(s) or History 7. Call Setup (Cd=ESRN, Cg=ESQK) * Call server & ESGW must map “client ID” to a valid Call Back Number 8. ESQK 9. ESQK 6. ESQK 10. ESQK 11. CBN, LO, VoIP Provider ID(s) or History? 12. CBN, LO, VoIP Provider ID(s) or History? LIS

VoIP Migration (Intermediate) Proposal – nba Telcordia Technologies Proprietary - Internal use only. See proprietary restrictions on title page. 7 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 User Agent/ IP device ESGW DHCP CBN = Call Back Number LO = geographic or civil location object ESRN = Emergency Services Routing Number/Information (non-dialable), e.g., npa911xxxx, for routing to ESGW (and to identify PSAP) 1. Loc. Valid. request (LO) SRDBALI DB DBMS MSAG 2.LO 1 3. us.st.ESRN 4. Loc. valid. resp. (us.st.ESRN) VoIP domain Emergency Services Provider Network Call server LIS 5. Location updates (CBN, LO) 6. Loc. update. resp. (success) 7.CBN, ESN 8.CBN, ESN