1. E9-1-1 Call Flow Wireline/Wireless/VoIP Andy Nielsen California 9-1-1 Emergency Communications Office 05/06/2008

2. May 6, 2008California 9-1-1 Emergency Communications Office2 E9-1-1 Basics S/R PSA P Database Network CPE The three basic ingredients for E9-1-1 call processing: Network, Database, and CPE ALI DB

3. May 6, 2008California 9-1-1 Emergency Communications Office3 The E9-1-1 Network S/R ALI DB PSA P End-office Switch End-office to Tandem or Selective Router Trunk group PSAP trunk group ALI Frame Relay Network

4. May 6, 2008California 9-1-1 Emergency Communications Office4 Wireline Call-flow

5. May 6, 2008California 9-1-1 Emergency Communications Office5 Wireline E9-1-1 Call-flow S/R ALI DB PSA P End-office Switch Caller dials “9-1-1” “9-1-1” Call is sent to S/R with ANI ANI S/R sends ANI to the ALI DB for ESN look-up ESN (which identifies the PSAP) is sent back to the S/R ESN Call and ANI are sent to PSAP ANI

6. May 6, 2008California 9-1-1 Emergency Communications Office6 Wireline E9-1-1 Call-flow S/R ALI DB PSA P End-office Switch “9-1-1” ANI ESN ANI CPE at PSAP sends ANI to ALI DB for ALI look-up

7. May 6, 2008California 9-1-1 Emergency Communications Office7 Wireline E9-1-1 Call-flow S/R ALI DB PSA P End-office Switch “9-1-1” ANI ESN ANI ALI is sent from the ALI DB to the PSAP ALI

8. May 6, 2008California 9-1-1 Emergency Communications Office8 Wireless Call-flow

9. May 6, 2008California 9-1-1 Emergency Communications Office9 Wireless E9-1-1 Call-flow S/R ALI DB PSA P End-office Switch

10. May 6, 2008California 9-1-1 Emergency Communications Office10 Wireless E9-1-1 Call-flow S/R ALI DB PSA P End-office Switch

11. May 6, 2008California 9-1-1 Emergency Communications Office11 Wireless E9-1-1 Call-flow S/R ALI DB PSA P Mobile Switching Center (MSC) 3 rd Party DB provider

12. May 6, 2008California 9-1-1 Emergency Communications Office12 Wireless E9-1-1 Call-flow S/R ALI DB PSA P Mobile Switching Center (MSC) 3 rd Party DB provider Wireless caller dials 9-1-1 “9-1-1”

13. May 6, 2008California 9-1-1 Emergency Communications Office13 Wireless E9-1-1 Call-flow S/R ALI DB PSA P Mobile Switching Center (MSC) 3 rd Party DB provider “9-1-1” The MSC requests PSAP info from the 3 rd Party DB provider

14. May 6, 2008California 9-1-1 Emergency Communications Office14 Wireless E9-1-1 Call-flow S/R ALI DB PSA P Mobile Switching Center (MSC) 3 rd Party DB provider “9-1-1” The 3 rd Party DB sends pANI (which identifies the proper PSAP) back to MSC pANI

15. May 6, 2008California 9-1-1 Emergency Communications Office15 Wireless E9-1-1 Call-flow S/R ALI DB PSA P Mobile Switching Center (MSC) 3 rd Party DB provider “9-1-1” pANI The MSC sends the caller and the pANI to the S/R, where it follows the same wireline call flow

16. May 6, 2008California 9-1-1 Emergency Communications Office16 Wireless E9-1-1 Call-flow S/R ALI DB PSA P Mobile Switching Center (MSC) 3 rd Party DB provider “9-1-1” pANI S/R sends pANI to the ALI DB for ESN look-up

17. May 6, 2008California 9-1-1 Emergency Communications Office17 Wireless E9-1-1 Call-flow S/R ALI DB PSA P Mobile Switching Center (MSC) 3 rd Party DB provider “9-1-1” pANI ESN (which identifies the PSAP) is sent back to the S/R

18. May 6, 2008California 9-1-1 Emergency Communications Office18 Wireless E9-1-1 Call-flow S/R ALI DB PSA P Mobile Switching Center (MSC) 3 rd Party DB provider “9-1-1” pANI ESN Call and pANI are sent to PSAP

19. May 6, 2008California 9-1-1 Emergency Communications Office19 Wireless E9-1-1 Call-flow S/R ALI DB PSA P Mobile Switching Center (MSC) 3 rd Party DB provider “9-1-1” pANI ESN CPE at PSAP sends pANI to ALI DB for ALI look-up pANI

20. May 6, 2008California 9-1-1 Emergency Communications Office20 Wireless E9-1-1 Call-flow S/R ALI DB PSA P Mobile Switching Center (MSC) 3 rd Party DB provider “9-1-1” pANI ESN pANI ALI DB determines pANI belongs to 3 rd Party DB provider and sends request over steering links to 3 rd Party DB

21. May 6, 2008California 9-1-1 Emergency Communications Office21 Wireless E9-1-1 Call-flow S/R ALI DB PSA P Mobile Switching Center (MSC) 3 rd Party DB provider “9-1-1” pANI ESN pANI 3 rd Party DB looks up pANI, determines call back number, populates ALI record and sends back to ALI DB ALI record

22. May 6, 2008California 9-1-1 Emergency Communications Office22 Wireless E9-1-1 Call-flow S/R ALI DB PSA P Mobile Switching Center (MSC) 3 rd Party DB provider “9-1-1” pANI ESN pANI ALI record ALI DB passes ALI record on to PSAP ALI

23. May 6, 2008California 9-1-1 Emergency Communications Office23 VoIP Call-flow

24. May 6, 2008California 9-1-1 Emergency Communications Office24 VoIP E9-1-1 Call-Flow S/R ALI DB PSA P Mobile Switching Center (MSC) 3 rd Party DB provider

25. May 6, 2008California 9-1-1 Emergency Communications Office25 VoIP E9-1-1 Call-Flow S/R ALI DB PSA P 3 rd Party DB provider VoIP Service Provider (VSP)

26. May 6, 2008California 9-1-1 Emergency Communications Office26 VoIP E9-1-1 Call-Flow S/R ALI DB PSA P 3 rd Party DB provider VoIP Service Provider (VSP) Caller dials 9-1-1 “9-1-1” VoIP caller is sent to 3 rd Party DB provider

27. May 6, 2008California 9-1-1 Emergency Communications Office27 VoIP E9-1-1 Call-Flow The 3rd Party DB determines what PSAP to send caller to, and sends pANI with call to S/R via Emergency Services Gateway S/R ALI DB PSA P 3 rd Party DB provider VoIP Service Provider (VSP) “9-1-1” Caller and pANI The VoIP call now follows the same wireline call flow

28. May 6, 2008California 9-1-1 Emergency Communications Office28 VoIP E9-1-1 Call-Flow S/R ALI DB PSA P 3 rd Party DB provider VoIP Service Provider (VSP) “9-1-1” pANI S/R sends pANI to the ALI DB for ESN look-up

29. May 6, 2008California 9-1-1 Emergency Communications Office29 VoIP E9-1-1 Call-Flow S/R ALI DB PSA P 3 rd Party DB provider VoIP Service Provider (VSP) “9-1-1” pANI ESN (which identifies the PSAP) is sent back to the S/R

30. May 6, 2008California 9-1-1 Emergency Communications Office30 VoIP E9-1-1 Call-Flow S/R ALI DB PSA P 3 rd Party DB provider VoIP Service Provider (VSP) “9-1-1” pANI ESN Call and pANI are sent to PSAP

31. May 6, 2008California 9-1-1 Emergency Communications Office31 VoIP E9-1-1 Call-Flow S/R ALI DB PSA P 3 rd Party DB provider VoIP Service Provider (VSP) “9-1-1” pANI ESN pANI CPE at PSAP sends pANI to ALI DB for ALI look-up ALI DB determines pANI belongs to 3rd Party DB provider and sends request over steering links to 3rd Party DB

32. May 6, 2008California 9-1-1 Emergency Communications Office32 VoIP E9-1-1 Call-Flow S/R ALI DB PSA P 3 rd Party DB provider VoIP Service Provider (VSP) “9-1-1” pANI ESN pANI 3rd Party DB looks up pANI, determines call back number, populates ALI record and sends back to ALI DB ALI record ALI DB passes ALI record on to PSAP ALI

33. May 6, 2008California 9-1-1 Emergency Communications Office33 NGEN Call-Flow Under Construction!!