Bell series and V-series modem standards:

Bell 103: 300 bps (V.21)
Bell 201: 2,400 bps (V.26)
Bell 202: 1,200 bps (V.23)
Bell 208: 4,800 bps (V.27)
Bell 209: 9,600 bps (V.29)
Bell 212A: 1,200 bps (V.22)
V.21: 300 bps
V.22: 1,200 bps
V.22bis: 2,400 bps
V.23: 1,200 bps
V.26: 2,400 bps (4-wire)
V.26bis: 2,400 bps
V.26terbo: 2,400 bps
V.27: 4,800 bps
V.27bis: 4,800 bps
V.27terbo: 4,800 bps (4-wire)
V.29: 9,600 bps (4-wire)
V.32: 9,600 bps
V.32bis: 14,400 bps
V.32terbo: 19,200 bps
V.33: 14,400 bps (4-wire)
V.34: 28,800 bps
V.34bis: 33,600 bps
V.fast: 28,800 bps
V.42: LAP-M error control
V.42bis: Data compression