Historical
ANSI O5.1c-2004
Supplement to ANSI O5.1-2002
Consists of updates to 5.1.2.3, 7.5, 8.3, and updates to Tables 1, 6, 6M, C.1, C.2, and C.3
Alliance For Telecommunications Industry Solutions [atis]
Consists of updates to 5.1.2.3, 7.5, 8.3, and updates to Tables 1, 6, 6M, C.1, C.2, and C.3