This chapter explains how to calculate the number of trunks and ports required to carry voice and provision the amount of bandwidth necessary for your organization. Traffic Engineering, as it applies to traditional voice networks, is the process of determining the number of trunks necessary to carry your organization's calls. This section briefly describes some of the technical issues to consider when engineering traffic.
Trunks connect switches together.
A WATS trunk can connect only to a CO that can provide WATS service. Impedance mismatches can cause signal energy passing in one direction to mix with the signal passing in the opposite direction on 2-wire media. Even if it contains only two physical wires, a medium is considered 4-wire as long as crosstalk between the two transmission directions, as measured at the interface, is negligible. High-priority traffic that is typically sent over dedicated trunks. On-net incoming and outgoing traffic.