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Try reversing the polarity of the phone line - some Central Office equipment reverses the line voltage to indicate Message Waiting. Your jack may be miswired (for a lot of phone equipment, polarity doesn't mattter).

Nortel Lands... | Answered on Jun 30, 2017


I have been asked to advise, but sadly I am totally ignorant of the product,or its likely method of operation.

I wish you well, and I'm sorry that I cannot help or assist.

robert

Nortel Norstar... | Answered on May 04, 2017


Press Feature * 0 (feature star zero) then each intercom or key. The display will show the number

Nortel Norstar... | Answered on May 01, 2017

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