NTT DoCoMo Inc., the nation's dominant provider of cellular phone services, said Tuesday it plans to raise 120 billion yen through 10-year bonds with coupons of 1.43 percent.

The firm's latest debt issuance is the second this year, following the issuance of five- and 10-year bonds totaling 180 billion yen in March.

NTT DoCoMo said proceeds from its latest offering will be used to finance its overseas investments.