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ns500 co keys goes red for no reason

ns500 co keys goes red for no reason

ns500 co keys goes red for no reason

(OP)
hi
there is strange and annoying error in my company ns500, the keys of co just goes red for no reason and i have to restart the device that there is a chance other co keys goes red!
all lines are set to disa and works fine , if this situation doesn't happen
😁👍

wonder to know everything , but life is short :(

RE: ns500 co keys goes red for no reason

What kind of CO-lines do you have (analogue, SIP, ISDN etc)?

------------
Telephone communication like an air: you do not notice it until you spoil it.

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