Issue 6 January 2008 177
Traffic engineering
This chapter provides an introduction to traffic engineering. Specifically, this chapter discusses
various traffic models, algorithms, and resource sizing.
This section includes the following topics:
● Introduction
● Design inputs
- Topology
- Endpoint specifications
- Endpoint traffic usage
● Call usage rates
- Communities of interest
- Expanded COI matrices
- COIs for multiple-site networks
● Resource sizing
- Overview
- Signaling resources
- Media processing and TDM resources
- Signaling resources
- Processing occupancy
- IP bandwidth and Call Admission Control
- Physical resource placement
- Final checks and adjustments
Introduction
The process of configuring, engineering, and deploying a Communication Manager system, or a
network of Communication Manager systems, begins with specifying the quantity and the
nature of the endpoints to be accommodated. Principles of traffic engineering are then applied
to determine the quantity and the placement of the various necessary resources. Once the
designed configuration adheres to all specifications and system constraints, the process is
finished.
