chapter  5
16 Pages

Architecture and Local Access Strategies

The architecture of an organization’s voice communications system directly affects the total cost of operations. Options vary from the obvious — whether to use voice-over-IP (VoIP) — to the subtle, such as appropriate options for least cost routing. It is generally recognized that most networks will evolve into one combined voice and data architecture. Recently, the TeleGeography 2002 report ( showed a six percent VoIP penetration worldwide by the end of 2001 (ten billion minutes of business VoIP traffic). Meanwhile, choices must be made and money spent. The sections below present options for an enterprisewide PBX (voice communications) architecture, local access alternatives, and related costs.