A good option for corporate communication, I have no complaints about the call quality. Sometimes there are minor disruptions, but that's typical for any operator, so I don't consider it a serious drawback. There are options in terms of tariffs, but I won't recommend anyone, as it all depends on the size of the team and specific needs. We use the "office" tariff, we have a small team, and the monthly subscription fee does not exceed 2,000, the minutes are sufficient, especially considering the per-second billing for outgoing calls.