909 A Universal Coupler Installation 1

[BoskerTheArkite]

G3siV11
I am installing a 909 a Universal coupler, to connect my switch to a little paging system.
How particular do I need to be on the polarity of my 48v dc power?
If I am loooking at the literature correctly it will work either way.

 

[AvayaTier3]

http://support.avaya.com/css/P8/documents/100091272

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