ITU-T Rec. V.91 Corrigendum 1 (07/2001) A digital modem operating at data signalling rates of up to 64 000 bit/s for use... Summary Source FOREWORD A digital modem operating at data signalling rates of up to 64 000 bit/s for use on a 4-wire circuit switched connection... CORRIGENDUM 1 1) Clause 8.2 - V.91 start-up 2) Clause 8.2.1.6