Бухгалтерия

[well50stress]

Подскажите, пожалуйста, как лучше перевести термины:
1) billing increment
2) initial billing increment
3) additional billing increment

Спасибо.

[Luz]

Billing increment - a call duration measurement unit expressed in seconds. Depending on your service provider, some services are measured and billed in sixty second increments (one minute) or the billing increment may be in durations of six or even ten seconds.
Может быть, тарификация звонков