Technical Reference
&Nn Sets connect speed, if connection cannot be made at this speed, the modem will hang up. When used in conjunction with &Un and &Un is greater than 0, &Nn sets the ceiling connect speed. &Un sets the floor connect speed. (See also the table in the &Un section.)
&N0  | Connection speed is determined by the remote modem  | 
&N1  | 300 bps | 
&N2  | 1200 bps  | 
&N3  | 2400 bps  | 
&N4  | 4800 bps  | 
&N5  | 7200 bps  | 
&N6  | 9600 bps  | 
&N7  | 12,000 bps  | 
&N8  | 14,400 bps  | 
&N9  | 16,800 bps  | 
&N10  | 19,200 bps  | 
&N11  | 21,600 bps  | 
&N12  | 24,000 bps  | 
&N13  | 26,400 bps  | 
&N14  | 28,800 bps  | 
&N15  | 31,200 bps  | 
&N16  | 33,600 bps  | 
&N17  | 28,000 bps  | 
&N18  | 29,333 bps  | 
&N19  | 30,666 bps  | 
&N20  | 32,000 bps  | 
&N21  | 33,333 bps  | 
&N22  | 34,666 bps  | 
&N23  | 36,000 bps  | 
&N24  | 37,333 bps  | 
&N25  | 38,666 bps  | 
&N26  | 40,000 bps  | 
&N27  | 41,333 bps  | 
&N28  | 42,666 bps  | 
&N29  | 44,000 bps  | 
60 56K Voice Faxmodem Internal - User’s Guide