P25 Completion Metrics The Industry Consensus 7-November-2005

2 The 4 Dimensions of Completeness  Interfaces – What are the specified objects?  Content – What’s specified?  Scope – What kind of systems can be built?  Functionality – What can they do? Interfaces Architectural Scope Content Functionality

3 4 Dimensions: Interfaces  The Eight Open Interfaces – Common Air Interface (U) – 2 Data Interfaces (A,Ed) – Inter(RF)-SS Interface (G) – Console Interface (Ec) – Fixed Station Interface (Ef) – PSTN Interface (Et) – Network Management Interface (En)  Plus Important Functional Interfaces – OTAR (KMF to End-Unit) – Key-Fill (KFD to End-Unit)  Plus Other Interfaces that we may discover “Internally” we know these are here, Externally, we may choose to hide them to maintain a consistent message

4 4 Dimensions: Content  Overview of Services/Classification  Messages (Vocabulary)  Procedures  Conformance Tests  Performance Recommendations  Performance Measurement Methods  Interoperability Tests Information that specifies the interface. “Fully Specified” Information that allows independent testing. “Certifiable”

5 Radios w/Ext. Consoles NMSKMFs 4 Dimensions: Architectural Scope RFSS System Fixed Stations Radios PSTN GWs NMS WACN Systems KMFs Fixed Stations PSTN GWs RFSSs Vender Specific Implementation (Limited Interoperability) WACNs Network of Networks Wide Area: Inter-System, Independent Mgmt Local Area Operation: Mixed Manufacturer, Unified Management

6 Radios w/Ext. Consoles NMSKMFs 4 Dimensions: Architectural Scope RFSS System Fixed Stations Radios PSTN GWs NMS WACN Systems KMFs Fixed Stations PSTN GWs RFSSs WACNs Network of Networks Wide Area: Inter-System, Independent Mgmt Local Area Operation: Mixed Manufacturer, Unified Management Vender Specific Implementation: (Limited Interoperability) Interoperable core functions, Interoperable Equipment to the degree that venders publish interfaces and implement each others proprietary features, Interoperable Agencies to the degree that Agencies co-operate Fully Interoperable Equipment, Interoperable Agencies through coordinated management Fully Interoperable Equipment with wide area roaming and independent management. Interoperable Agencies through coordinated management

7 4 Dimensions: Architectural Scope  Vender Specific Implementation – – Exists Today, Many venders can build a system that works and is fully functional with proprietary features  Local Area – Exists Partially Today (Radio Interoperability), with Venders implementing each others features  Wide Area – Specification Incomplete, Extended Identifiers, Wide-Area OTAR, etc  Network of Networks – Not considered

8 4 Dimensions: Functionality  Refers to what the system can do  Changes as user requirements evolve (over time) and are incorporated into the standards  We need to discuss naming (Rev, Release, Version, Slice)  We need to discuss what the names mean – Is “Thing1” the current TSB102 functionality, for example?

9 The 4 Dimensions of Completeness Interfaces Architectural Scope Functionality Local Area Net of Nets Certifiable Content Specified CAI ISSI etc. P25 is truly complete when all of the interfaces are “certifiable” for Network-of-network operations and the requirements stop changing! But it’s “usefully” complete when the standards are accepted by industry, industry is building interoperable products, and users accept those products.

10 Observations  This model for completeness, while accurate, is probably too complex for public display.  P25 will and should continually evolve, and so will never be “totally done”.  We as a community need a way to demonstrate continual progress and useful waypoints.

11 Example Summary of Status  Select TSB102A Functionality, Show Progress on Content for Interfaces vs. Scope 8 Interfaces + OTARVender Specific Operation Local Area Operation (Intra-System) Wide Area Operation (Inter-System) Common Air I/F (U)Fully Specified by VendersFully Specified less 1 featureSome Work Required 2 Data Interfaces (Ed,A)Fully Specified (2) Inter(RF)-SS I/F (G)N/AVoice Only, Work Ongoing Console I/F (Ec)N/AOverview Only, Ongoing Fixed Station I/F (Ef)N/AConventional Voice Only, Ongoing N/A PSTN I/F (Et)Fully SpecifiedSome Work Required Network Mgmt (En)N/ANot Started OTARFull Specified, Nearly Certifiable Work Required Status5/54/92/9

12 Showing Progress, Defining Waypoints, Next Steps  Develop Status Charts for Multiple Views  Choose one that is truthful, and reflects our progress in a good light  Focus on work that meets the real needs of the user community, and shows discernable progress towards filling in the chart