система повременного учета соединений (телекоммуникации)

[Елена...]

Подскажите, пожалуйста, есть ли устойчивое выражение для перевода на английский "системы повременного учета соединений" (телекоммуникации)?

Заранее, спасибо!

[Renaissance]

(?) call time tracking system

Например,
Time Tracking allows you to easily track time and bill customers for that time.
With Time Tracking, your company can track time worked by your employees and contractors. You can easily assign each particular time activity to a project or customer and choose whether to bill your customers for that time. Because it works over the Internet, the Online Edition makes it easy for employees to track time. Employees or subcontractors simply fill out time sheets from any PC connected to the Internet. To keep your finances secure, you can give these users "time entry" only access and then choose whether or not to restrict them from seeing their billing rate.

[Brains]

А что сие в принципе означает? Как можно учитывать соединение? Можно на русский перевести?
Может, речь идёт о time-based usage billing?