had a phone plugged in as ext 11, it may have been plugged into a co line at some point and stopped working.

I replaced with an untested phone and that too is not working. however the smaller phones work fine.

is there a place to tell it to be one type of phone versus another? (4-51 dictate the line keys)

Is there a different wiring needed for it? (1st pair instead of second pair?


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