If it is a small-scale enterprise, it is not necessary. If it is a medium-sized and large enterprise, it depends. If the company makes a group call and the unified number is transferred, it will be fine.

In which companies do VoIP sell products more by telephone, and which companies need a lot of telephone services?

For example, if you think about the scene when you dial 10000 or 10086, you will be asked to press this button after a half-day introduction. Are you bored? Can the customers of your company accept it?