We have an NEC dterm series 1 phone in our office and somehow it has stopped ringing in, the only way we know a call is incoming is the light flashes, can you help.
During an incoming call try holding the up arrow on the volume key. That is the only way I know to increase or decrease the volume of the ring. The phone might also be set on DND. in which case you have to Press feature dial the DND cancel code 69 press feature. If note look for you user guide here. http://www.neccare.com/cng/docs.nsf/Lib3?OpenView&Start=1&Count=100&Expand=6.13#6.13
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I have the same problem. Also the feature light won't stop blinking.
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