Hospital intercom system you are referring to the window intercom or ward call intercom system, the former is generally the host and the extension can be connected one-to-one correspondence (using an audio cable), and sometimes more than one hosts are connected hand in hand (2-core wire) to achieve the function of communication with the management hosts (in addition to the intercom in addition to the function of the use of the case)
Ward call intercom system, is composed of the call mainframe
The ward call intercom system is composed of call host, bed call extension, waterproof switch, etc. The extension is connected with the extension by hand (3-core wire), and finally connected to the host. The maximum number of extensions connected to each bus depends on the call host. The following is an example of LaiBang's products, the pictures are as follows: