How to install a hotel phone

Buy a small program-controlled switch, which is usually sold in communication equipment stores or computer stores. Select the capacity of the outside lines and extensions according to your needs. Generally, the larger the capacity, the higher the price. For example, a 4 outside lines and 32 extensions costs about 2,000 yuan, while a 16 outside lines and 128 extensions costs about 12,000 yuan. Of course, the brands are different. Prices are also different.