. . . . . . . . . . "Number portability hearing before the Committee on Commerce, Science, and Transportation, United States Senate, One Hundred Tenth Congress, first session, July 12, 2007"@en . "Number portability : hearing before the Committee on Commerce, Science, and Transportation, United States Senate, One Hundred Tenth Congress, first session, July 12, 2007"@en . "(S. 1769)"@en . . . . . . "Rules"@en . . . . . . . . .