Data mode capabilities: ITU T V.92, 56Kbps ITU T V.90, 56Kbps ITU T V.34, 33600 to 2400 bps ITU T V.32bis, V.32 ITU T V.22bis,V.22 ITU T V.23, V.21 FAX mode capabilities: ITU T V.17, V.29, V.27ter, and V.21 Ch 2 Group3 FAX Caller identification (caller ID, based upon V.92) V.42 and NMP2-4 error correction (LAPM and MNP) V.42bis and MNP class 5 data compression Operating system sup