On a trunk-side voice logging system, the Traffic Analyzer module enables the measurement of traffic across specified trunk lines and groups. It plots the number of simultaneous calls (i.e. concurrent channels in use) on the selected trunks, optionally filtered by dialled prefixes, over a selected period of time. This allows a telephony administrator to accurately determine traffic volumes in order to correctly 'dimension' network access, particularly with regard to the optimization of Least Cost Routing lines. Being based on concurrent calls, the Traffic Analyzer also provides an accurate indication of contact centre staffing requirements at different times of day, month etc, and will reveal traffic trends over a period of time.
The charts below are taken from an ISP support call centre equipped with 13 x PRI and 90 x SIP trunks, handling primarily inbound traffic. This call centre operates between 7.30am and 10pm, and is also active on weekends. The charts below track the number of simultaneous calls over a period of 1) one month and 2) one day, with no filtering being applied. The traffic therefore includes all inbound and outbound groups, as well as general and administrative calls