PARIS (Standard&Poor's) Nov. 19, 2008--Standard&Poor's Ratings Services said today that it raised its long-term foreign currency (FC) corporate credit rating on Turkey's leading mobile telecom operator Turkcell Iletisim Hizmetleri A.S. to 'BB+' from 'BB'. The outlook is negative. At the same time, we assigned our 'BB+' long-term local currency (LC) corporate credit rating to Turkcell. The outlook on the LC rating is stable. At Sept. 30, 2008, Turkcell had gross on-balance-sheet unadjusted debt of $821 million, including overdrafts. "The upgrade reflects Turkcell's continued solid operating performance in the dynamic but gradually maturing Turkish mobile telecom market; good cash flow generation; low financial leverage; and high, partly hard-currency-denominated cash balances," said Standard&Poor's credit analyst Patrice