hi all..i got 3 units of FCU that cannot be use,it's always show 'using handset' message when i put in the fax line..what is the problem?is there any setting that could settle this error?or is it a hardware error?when i replace with another set of FCU then only the machine can use fax option..
tq in advance..
**sorry for my english..
tq in advance..
**sorry for my english..


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