STEVENSON, Md.--(BUSINESS WIRE)--The securities litigation law firm of Brower Piven, A Professional Corporation, has commenced an investigation into possible breaches of fiduciary duty and other violations of state law by the Board of Directors of Premiere Global Services, Inc. (NYSE: PGI) (“Premiere” or the “Company”) relating to the proposed buyout of the Company by funds managed or advised by Siris Capital Group, LLC, in a transaction valued at approximately $1.0 billion. Under the terms of