Table of Contents:

Definition and Overview

1. Introduction

2. Types of Number Portability

3. Wireline LNP Architecture and Processes

4. Wireless LNP Status, Requirements, Architecture, and Processes

5. Number Portability Deployment Options

6. Number Pooling

7. Conclusion

Self-Test

Glossary

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Definition
Number portability is a telecommunications network feature that enables end users to retain their telephone numbers when changing service providers, service types, and/or locations.

Overview
This tutorial will identify and explore the issues, challenges, and potential solutions related to number portability in the United States, with an emphasis on service provider portability, commonly referred to as local number portability (LNP).