ENP Study Group Wireless-VOIP

Transcription

1 ENP Study Group Wireless-VOIP BROUGHT TO YOU BY: THE FLORIDA NENA EDUCATION COMMIT TEE

2 Wireless Evolution Similar to Wireline Basic Call Flow (Voice Only): Wireless Basic Cell Phone to Mobile Switching Center (MSC) MSC is Equivalent to the Landline Network Central Office MSC Translates and Routes to Preset 7/10 Digit Number at Designated PSAP i.e. Only One Call Routed Over Public Switched Telephone Network (PSTN) Bypasses Network No ANI/ALI/SR i.e., No Enhanced (E9-1-1) Some Wireless Service Providers (WSPs) Provided Caller ID Some WSPs Routed to 7/10D Numbers at the Selective Router i.e., Phase 0 Overall Shortcomings -- NOT On par With Landline E9-1-1

3 FCC Report and Order (and Others) Enhanced Wireless Phase I Required WSPs to Provide Enhanced Service for Wireless Users (ANI/ALI/SR) FCC Wireless E9-1-1 Program Divided Into Two Parts Phase l And Phase II Phase l Mandates: Call Back Number (CBN) i.e., ANI Cell Sector Location Information i.e., ALI Routing to Proper PSAP i.e., Selective Routing Call Flow Cell Phone to MSC to SR to PSAP Driven by 10-Digit pseudo ANI (pani) Also Known As Emergency Service Routing Digit (ESRD) One pani Number per Cell Tower/Sector Generally Three Per Tower All Calls From Each Sector Have Same pani/esrd and Route to Same PSAP pani/esrd Records Loaded in ALI Database for Look Up

4 Phase I Wireless Networks Two Network Design Alternatives to Meet Phase I Mandates Call Path Associated Signaling (CAS) or Hybrid CAS Non-Call Path Associated Signaling (NCAS) CAS 20-Digits Delivered to the PSAP via Voice Call Path Network 10-Digit Wireless Call Back Number (CBN) 10-Digit pani/esrd per Cell Face Sector pani ALI Records (Cell & Sector Location Description) Loaded in PSAP ALI Database for Query CAS Generally Required Upgrading Selective Router and PSAP CPE to Handle 20-Digits NCAS aka Wireline Compatibility Mode Did Not Require SR/PSAP CPE Upgrade Required Upgrade To ALI Database to Send Query To & Accept Call Data on the fly From Third Party DB Process Known as ALI Steering 10-Digit pani Delivered to the PSAP via Voice Call Path Network ALI Query/Delivery Via Separate Data Network Between PSAP ALI CPE and Third Party Database Per Reference Manual Most Common Method for Phase I Mandate (But Not in Florida) Is Predominant Method for Phase II Wireless

5 pani/cbn pani/cbn PSAP CPE pani CBN Cell Face ALI

6 Enhanced Wireless Phase II Requirements Phase 1 Requirements Provided If Phase II Location Data Not Available (Fall back) Callers Location Must Be Delivered to PSAP To Within Mandate Longitude and Latitude X and Y Coordinates FCC Accuracy Mandate Handset Based - Within 100 Meters 67% of Calls or 300 Meters 95% of Calls Network Based Within 50 Meters 67% of Calls or 150 Meters 95% of Calls Handset Based Location Global Positioning System (GPS) via Satellites Network Based Location Location Determination Technology Associated With Land Based Wireless Network (Triangulation) AKA Position Determining Entity (PDE) Network Map Interface Greatly Enhances Location Benefits

7 Phase II Delivery pani and Voice Call Flow Cell Phone to MSC to SR to PSAP Via Call Path Network Utilizes Non Call Path Associated Signaling (NCAS) aka Wireline Compatibility Mode (WCM) NCAS Most Predominant Method Currently Deployed For Phase II Call Driven Through Network Via Emergency Services Routing Key (ESRK) i.e., pani ESRK Range of Numbers Per PSAP Vs A Number per Cell Site Sector 10-Digit Number pani to PSAP for ALI Query

8 Phase II Delivery Location (ALI) Data Flow MSC to MPC/PDE to 3 rd Party Database Separate Network From Call Flow Position Determining Entity (PDE) Network Based Handset Based Combination Per WSP Mobile Positioning Center (MPC)/Third Party (non WSP) Database Dynamically ( on the fly ) Creates Wireless ALI Record Call Back Number (CBN) and X/Y Coordinates Location ALI Record Parked at 3 RD Party Data Base/MPC Awaits ALI Query Via Ali Steering From PSAP ALI CPE For Delivery of CBN & X/Y

9 Phase II ALI Look Up ALI Data Flow Voice and ESRK Arrive At PSAP ANI/ALI CPE PSAP ALI Recognizes As Wireless Based on ESRK PSAP ALI Request Steers ESRK (ALI Steering) To Appropriate 3 RD Party DB/MPC Via Data Network 3 RD Party DB/MPC ESRK With Parked ALI Record Delivers CBN and X/Y Location to PSAP CPE Via Data Network in PSAP ALI Record Format If Phase II Data Information Not Available, Phase I Data Information Delivered ALI Update Aka Repeat ALI/ALI Refresh/Rebid Generates Update Request To 3 RD Party DB/MPC Via Repeat ALI Button At PSAP CPE Request Phase II Data If Only Phase I Data Initially Received Update Location And Limited Tracking of Moving Caller Generally Available At Second Intervals

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11 Enhanced Wireless Phase II Accuracy Requirements (Reference Material) Current FCC Requirements (2013) Handset Based 100Meters/ 67% Calls 300 Meters/95% Calls Network Based 50Meters/67% Calls 150 Meters/95% Calls Confidence Factors on Per Call Basis (PSAP Must Request) Accuracy Confidence/Uncertainty Score. Example: 90% and 35 Meters 90% Confident Caller Within 35M of Est. Location

12 Accuracy Reported on County or PSAP Coverage Area 8 Year Implementation Timeframe Until Early 2019 Eventual Uniform Accuracy Standard Technology Advancement Diminishes Difference Handset Standard To Prevail Network Standard Sunsets 2019 (No New) Specific Date TBD by FCC Enhanced Wireless Phase II Accuracy Requirements Cont. (Reference Material) WSPs Must Periodically Test & Report Outdoor Accuracy Data to PSAP/County and State 911 Office

13 FCC Basic Wireless 911 Rules (94-102) All Wireless Handsets Access 911 With or W/O Mobile Identification # (MIN) No User Validation Process Wireless Non Initialized Phones (Reference Material) Includes Those Not Subscribed for Service & Prepaid Wireless Assistance Programs Elderly, Domestic Abuse, Low Income Equivalent to Wireline Soft Dial tone Wireless ALI Screen Shows Phase I/II Location Info No Callback Number Area Code 911-Serial # Wide Open for 911 Call Abuse Move Afoot to Have FCC End Requirement Due to Pranksters and Abuse

14 Wireless Service Providers (WSPs) (Additional Info) Cellular 911 Telephone Service (Initially Seven) AT&T Sprint/Nextel T-Mobile Verizon Wireless Metro PCS Federal Communication Commission Regulated Not FL Public Svc Commission Wireless Phase I and II Mandates Wireless 911 Service Provided Via Service Providers For ANI/ALI/SR ALI Database Via Third Party Providers Intrado TCS P.01 Grade Of Service Not Required of WSPs

15 VOIP Voice Over Internet Protocol VOIP Internet Multitudes of Digital Networks Connecting Multitudes Of Computers Data Split Into Packets & Sent Over Networks. Protocol Rules For Communications(Language) Initially Data Only Voice Packetized and Sent Over Internet VOIP Becoming Predominant Technology In Telecommunications VOIP Service Providers (VSPs)

16 VOIP (cont d) Early Issues Reduced Quality of Service 911 Optional By Some Routing to 10D # (Often Non PSAP) No ANI/ALI FCC Order For Full E911 NENA and VSP Coalition Agreement Path and Standards i-1,i-2,& i-3

17 FCC VOIP Rules VSPs That Interconnect With PSTN Must Automatically Provide 911 Service to all Customers Mandatory Standard Feature Without Customers Having to Ask Customers May Not Opt Out of 911 Service VSPs Must Obtain Customer s Initial Physical Location Used and Provide Means to Update VSPs Must Transmit All Calls With Customer Call Back Number (CBN) and Registered Physical Location To Appropriate PSAP i.e., All calls must have E911 (ANI/ALI/SR) VSPs Must Ensure Customers Have Clear Understanding of any Service Limitations Circumstances Under Which 911 May Not Be Available Limitations in Comparison With Traditional 911 Service Provide Labels to be Affixed to Customer s Equipment Warning of Limitations Customers Must Affirm Understanding of Limitations

18 VOIP Service Providers Outside Current E9-1-1 Network Basic VOIP I Call Immediate Method 10-Digit Emergency/Administration Number At PSAP CNID possible No ALI

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20 VOIP I Call Migratory (Interim Method) VOIP Calls Into Current E9-1-1 Network Similar To Wireless Phase II NCAS Call Flow Voice and Data Call Paths Calls Driven Through Voice and Data Networks Via Emergency Services Query Key (ESQK) VSPs Interface Network Via Gateways/CLECS Voice Positioning Centers (VPCs) Provide Civic or MSAG Valid Addresses and Call Back Number Well Established and In Service Now NENA Standards Developed

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22 Migration Path to I3 & NG911 Transition: VOIP I2 Migratory Solution From Legacy Network Infrastructure (Circuit Switched TDM) CAMA SS7 ISDN PRI To IP Network (Packet Based Voice & Data) MPLS (Multi-Protocol Label Switching)

23 VOIP NENA I3 Call Next Generation (NG9-1-1) Why NG 9-1-1? Rapid Technology Explosion Of Calling Devices Used To Call For Help Audio>Text>Pictures>Video>Telematics>?? Multimedia Increased Volume and Diversity of Emergency Call Information for PSAPs/Responders Need For Interoperability of Systems Need For Open Standards Architecture i.e., Mainstream Technology Legacy E9-1-1 System (30 Years of Service) Cannot Handle Requires Big Time Change Next Generation and NENA I3 All Existing E911 Capabilities Are Maintained in NG 911

24 VOIP NENA I3 CALL NEXT GENERATION (NG 911) NG 911 INCLUDES System Elements, Protocol, Process and Procedures Large Scope, Evolving, Ongoing i.e. Evergreen NENA I3 STANDARD VERSION /07 Technical Specification First Version NG 911 System Recommended Standard for Functions and Interface Between System Elements