How to install the hotel telephone extension?

Generally speaking, there are two ways to connect the extension cords of two phones. One way is to connect the extension cables of two telephones directly. As long as the connected lines are reliable, there will be no noise. You can weld the connected heads with an electric soldering iron. The advantages of this connection are simplicity and low cost. The disadvantage is that you can't answer and make calls at the same time. What's the inconvenience of having more phones? If this connection makes a particularly loud strange sound, it will make a shadow cry. Under normal circumstances, the anti-theft function of the phone is turned on. As long as you turn it off, you will be fine. Another connection method is to connect the main line of your application to the main line interface of the switch through a small telephone exchange, and then connect the extension line to the extension interface of the switch. The specific instructions for connecting the switch are detailed. The crystal head of the telephone line should be clamped with special pliers. If the crystal head is four wires, the telephone line is usually sandwiched between two wires. The advantage of this connection is that answering the phone does not affect each other. Independence is relatively high.