User`s manual

U.S. Robotics I-modem Command Reference
Controlling Data Rates • Page 7-4
&N0 Variable rates. Negotiate for the highest possible rate.
&N1-&N16 Fixed rate. Connect only if the remote device is operating at the rate
you specify.
&N1 300 bps &N9 16.8 Kbps
&N2 1200 bps &N10 19.2 Kbps
&N3 2400 bps &N11 21.6 Kbps
&N4 4800 bps &N12 24.0 Kbps
&N5 7200 bps &N13 26.4 Kbps
&N6 9600 bps &N14 28.8 Kbps
&N7 12.0 Kbps &N15 31.2 Kbps
&N8 14.4 Kbps &N16 33.6 Kbps