Listed in the table below you will find the old DS MUX Device part number with the new MUX Device replacement. Replacement Part Numbers Old DS MUX Devices Description FPE-7039, D7039 DS9331, DS9431R MUX Card D7050-B6 MXB2W MUX Base D7044 MX361 Single Point D7044M MX361M Mini Single Point FMM-7045 MX310 Pull Station FMM-7045D MX310D Dual Action Pull Station D7052 MX363 Dual Point Module D7053 MX46 I/O Input/Output Modules D7050 MX250 MUX Smoke Head D7050TH MX250TH MUX Smoke Head with 135 Heat Sensor .
What does it mean when the panel displays a trouble of "Dialer Answering Unknown"?
"Dialer Answering Unknown" is caused by the panel answering an incoming phone call. This will cause a trouble tone from the panel that will clear itself when the panel releases the line, this may take up to 10 minutes. If another event (Alarm, Trouble, Supervisory) occurs during this time, the panel will drop the line and dial out to the central station.