Main features and functions-way calling, duplex intercom, speakerphone host. Call the digital display, sound and light alarm. Call store, host digital and lights displayed simultaneously. Corridor display turns call display call number, number of beds, but can be set to music prompt is displayed when there is no time to call. Host, extension can be reset. Extension has a call and told through lights and music tips. Tertiary care can be arbitrarily set, and indicator lights with three different colors and different voice prompts, advanced call priority. Can be equipped with an emergency call ext toilet. Medical Call System Troubleshooting: All extensions can hear sounds host, but the host only certain extensions inaudible. There are three possible reasons for the failure caused by: (1) internal microphone receiver connected to broken or damaged; (2) the extension microphone (MIC) bad; (3) the classification of audio amplifier transistor Q4 or Q5 damage. First open mic housing inspection found the wire connections are secure, with a multimeter to measure the receiver was normal medical call extension, the extension is connected to a fault with neighboring wards and buttons socket outlet, the fault persists, indicating that MIC has nothing to do with the extension of medical call manufacturers, welding the board audio amplifier tubes Q4, Q5 check intercom call, found Q4c, e breakdown between poles, replacement Q4, back to normal. Call for medical engineering _ _ medical call medical gas supplied by Ericsson Hebei Medical Engineering Limited. Ericsson Hebei Medical Engineering Co., Ltd. (www.hslixin.com) strong, credible, Hebei Hengshui medical device manufacturing equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Hebei Ericsson and you hand into the brilliant, for a better future!