Call a host of features, two-way call: extension can call the host, can also call the extension 2, two-way conversation: microphone by words without conversion, even if the two sides talk of medical calls, can clearly hear each other's voices. 3, the host multi-function display: the host has the patient list, the corresponding number of beds and digital indicator window. 4, hitless call: In the normal state medical intercom paging, as long as there is an incoming call can. System wiring requirements 1, between the host and the extension of the system wiring using three core PVC insulated copper wire, model RVV medical call intercom, specifications 2X1.0 mm (Note: where is host to two-wire extension connection, another wire when broadcast or infusion alarm powered by lines). 2, the system shall wiring separately. Such as weak lines parallel wiring, the distance between lines is not less than 15mm. Such as when strong electric wiring line parallel with the distance between lines is not less than 200mm. 3, except that the present system with the transformer input voltage is AC220V, the remaining lines are in the operating voltage of DC36V following safety voltage. 4, the system includes a host and extension wiring connections, host and corridor display connection, the host and the wireless transmitter connection, the host and the patient, such as a list of connections. Medical call intercom, Hebei Ericsson (certified), call provided by the Medical Engineering Co., Ltd. Hebei Ericsson. Ericsson Hebei Medical Engineering Co., Ltd. (www.hslixin.com) Hebei Hengshui, a leader in medical device manufacturing equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Hebei Ericsson leadership with the staff warmly welcome all inquiries negotiations to create a better future Hebei Ericsson.