h1. Repeating number detector *Repeating number detector* is a Smartswitch subsystem that monitors the repetition of A or B numbers in a traffic stream during a certain time interval. If such a repetition is detected, Smartswitch records this event into the database in such a way that you can later view the report. Also Smartswitch can send an e-mail with a notification to your e-mail and/or automatically block up such a call, if this behavior is configured. Also Smartswitch can write a duplicate number to [[Number pools|Number pool]], which can be installed on several peers. This number pool can be set as black for all peers. Thus, a duplicate number found on one peer will automatically become blocked not only for the current peer, but also for all others. And in the future, it will be blocked even at the first attempt. [[Детектор повторяющихся номеров|Русский перевод]]