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ITU-R M.1228-0
ITU-T Q.921
ITU-R S.1326-0
ITU-T I.328/Q.1202 (09/97)
ITU-T Q.1228 Fascicle 1/5
ITU-T Q.1228 Fascicle 5/5
ITU-T Q.1600
ITU-T Q.1224 Fascicle 3/3
ITU-R F.1334-0
ITU-T Q.1224 Fascicle 1/3
ITU-T Q.1228 Fascicle 3/5
ITU-T Q.1228 Fascicle 4/5
ITU-R S.1327-0
ITU-T Q.1224 Fascicle 2/3
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