SR 4163 : ISSUE 2

1 Introduction
      1.1 Purpose
      1.2 Scope
      1.3 Audience
      1.4 Overview/Roadmap
2 Assumptions
3 E9-1-1 Service Overview
      3.1 E9-1-1 Call Flow
      3.2 E9-1-1 Service Capability Definitions
4 Current E9-1-1- Implementation
      4.1 End Office E9-1-1 Functions
      4.2 E9-1-1 Tandem Functions
              4.2.1 Selective Routing
              4.2.2 Default Routing
              4.2.3 Alternate Routing
      4.3 Functions Performed By E9-1-1 Tandem and PSAP CPE
              4.3.1 Completion of E9-1-1 Call on the Trunk
                        Connection to a PSAP
              4.3.2 Forced Disconnect
              4.3.3 Central Office Transfer Features
              4.3.4 Trunk Maintenance Test Calls
      4.4 PSAP CPE Functions
              4.4.1 Optional Connections to Recorders and
                        Teleprinters
              4.4.2 Selector Console
              4.4.3 E9-1-1 Integrated Tandem/PSAP Platform
      4.5 Automatic Location Identification (ALI) Functions
              4.5.1 Typical Processing of an Emergency Call With ALI
              4.5.2 Database Management System
5 Acronym List
6 Reference List

A document which describes the telecommunications network and their features/associated network elements that are needed to provide the E9-1-1 service. This E9-1-1 service description that is provided within this document is generic in which it describes functionality that exists within the network of today and no supplier-specific implementations are discussed.