RETURN Voice Networking

Introduction

The purpose of this document is to detail overall voice system design criteria for both public and private networks. While this document specifically describes the United States environment, international requirements have been noted where relevant specifications are applied and available.

IT IS ASSUMED HEREIN THAT THE READER POSSESSES GENERAL ANALOG SIGNAL KNOWLEDGE (POWER, DECIBEL – dB, TLPs, AND IMPEDANCE) AND A KNOWLEDGE OF DIGITAL TRANSMISSION SYSTEMS. ALSO NOTE THAT THROUGHOUT THIS DOCUMENT, IMPORTANT STATEMENTS ARE HIGHLIGHTED IN CAPITAL LETTERS.