I have a 4450 DSS attached to a 4424. There are buttons assigned to the DSS, and they can be used to answer a call, but they do not light up. Would this be a hardware issue, like a defective 4450? Or am I missing something?
Do you have the necessary local power supply? Line cord goes from wall to power supply to 4424. Then short cable goes from Adjunct port on 4424 to 4450.
Mike
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