Roger H. Moore has been a director since June 2000. He served as President and Chief Executive Officer of Illuminet Holdings, Inc., a provider of network, database and billing services to the communications industry, from January 1996 until it was acquired by Verisign, Inc. in December 2001, and he retired at that time. He was a member of Illuminet's Board of Directors from July 1998 until December 2001. From September 1998 to October 1998, he served as President, Chief Executive Officer and as a director of VINA Technologies, Inc., a telecommunications equipment company. From November 1994 to December 1995, he served as Vice President of major accounts of Northern Telecom. From June 2007 to November 2007, Mr. Moore served as interim President and Chief Executive Officer of Arbinet-thexchange, Inc. From December 2007 to the present, Mr. Moore has served as the Chief Executive Officer of Verisign, Inc.'s Communications Services Group. He is also a director of Consolidated Communications Holdings, Inc. and Verisign, Inc.