WTA and OPASTCO File Joint Comments on Number Portability March 24, 2008/in WTA News /by adminView PDF 032408 https://w-t-a.org/wp-content/uploads/2020/04/WTA-Logo-Full-Wide-900.png 0 0 admin https://w-t-a.org/wp-content/uploads/2020/04/WTA-Logo-Full-Wide-900.png admin2008-03-24 14:24:212008-03-24 14:24:21WTA and OPASTCO File Joint Comments on Number Portability