ATBn Select Communications Standard
Your modem is capable of connecting to remote systems using a variety of communications standards. This command enables you to select the communications standards you want to use. The performance of V.90 and K56flex are very similar. The main difference is the connect speeds available for K56flex and V.90. The following speeds are available when your modem is using V.90:
Command | Speed |
B0 ■ | |
B1 | |
B2 | |
B3 | V.21 at 300bps |
B4 | Bell 103 at 300bps |
B5 | V.23 at 1200/75bps |
B6 | V.22 at 1200bps |
B7 | Bell 212A at 1200bps |
B8 | V.22bis at 2400bps |
B9 | |
B10 | V.32 at 4800bps |
B11 | V.32 at 7200bps |
B12 | V.32 |
B13 | V.32 at 9600bps |
B14 | V.32bis at 12000bps |
B15 | V.32bis at 14400bps |
B16 | V.34 at 14,400bps |
B17 | V.34 at 16,800 bps |
B18 | V.34 at 19,200 bps |
B19 | V.34 at 21,600 bps |
B20 | V.34 at 24,000 bps |
B21 | V.34 at 26,400 bps |
B22 | V.34 at 28,800 bps |
B23 | 31,200 bps |
B24 | 33,600 bps |
B25 | (Reserved) |
B26 | (Reserved) |
B27 | V.34 at 2400bps |
B28 | V.34 at 4800bps |
B29 | V.34 at 7200bps |
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