NEW YORK (Standard&Poor's) Oct. 19, 2015--Standard&Poor's Ratings Services today said its 'BB-' corporate credit rating and all other ratings on Little Rock, Ark.-based Windstream Holdings Inc. are not immediately affected by the announcement that Windstream reached an agreement to sell its data center business to TierPoint for $575 million. According to the company, the data center assets account for about $122 million of revenue and $40 million of EBITDA, or roughly 2% of last-12-months EBITDA (before the lease payment). The 'BB-' corporate credit rating, and all other ratings, remain on CreditWatch with negative implications, where we placed them on Aug. 6, 2015. We expect the company will use a portion of the proceeds from the sale