SR 4164 : ISSUE 2

1 Introduction
      1.1 Purpose
      1.2 Audience
      1.3 Roadmap for this Document
2 E9-1-1 Evolution Drivers
      2.1 Expanded NPA Capability
      2.2 Wireless E9-1-1 Interconnect
      2.3 Acceptable Call Setup Delay
      2.4 Local Number Portability
      2.5 Maintain or Improve Current 911 Network Reliability
3 E9-1-1 Signaling Evolution
      3.1 E9-1-1 Enhanced MF Signaling Needs
              3.1.1 Tandem-to-PSAP Needs
              3.1.2 End Office to Tandem Considerations
              3.1.3 Tandem to Tandem Considerations
      3.2 Enhancing E9-1-1 Signaling to a Digital ISDN
              Protocol from the E9-1-1 Tandem to the PSAP
              3.2.1 Limitation of MF ANI Delivery
              3.2.2 Advantages of ISDN Calling Party Number/
                        ANI Delivery
              3.2.3 Issues With ISDN CPN/ANI Delivery
      3.3 CCS End Office-to-Tandem Needs
              3.3.1 Introduction
              3.3.2 Trunk Network Architecture Impacts
              3.3.3 SS7 Impacts
      3.4 CCS Tandem to Tandem Needs
4 Issues
5 Acronym List
6 Reference List

Analyzes the impact of current industry trends and business drivers on today's E9-1-1 service. These drivers will be used to describe impacts on network architecture and network elements and expected requirements needs to support the evolution of E9-1-1 signaling.