... effect data transmission, it supports data compress protocol, V.92, V.90 (56Kbps), V.34 (33.6Kbps) protocol standards.Featuresl With ... make transmission more effective.l Set the designated compatible hayes AT commandl Complies with advanced G3 dimension and ... ITU-TV.92 , V.90 , V.34 , V.32bis , V.32 , V.22bis , V.22 , V.23 , V.21 , Bell212A , 103l Fax protocol: V.17, V.29, V.27terandV.21Channel2 ...