Why do all telephone extension numbers in the workplace tend to use numbers starting with 8? Why do many companies have to dial 9 first to make external calls? Come with some brains

This is related to the setting of your company's telephone program-controlled switchboard. Generally, in order to avoid conflicts between dialing external lines and internal lines (for example, numbers starting with 1 are usually various hotlines 110.120.122, etc., and mobile phones also start with 1, There are also area codes in other areas starting with 0, and in various areas in the city starting with 2-8) there are only a few numbers starting with 9, so generally when you choose an internal line to dial an external line, you need to add 9 first. By default, direct dialing is within the program-controlled exchange. The telephone network segment.

The number at the beginning of the telephone extension number in the unit depends on the settings. Some units choose the last few digits of the local phone number as internal short numbers, and there are also cases where they are set separately.

To put it simply, it all depends on the mood of the person who set it up, and maybe there is some Feng Shui related thing~