Dell Inspiron 10z (1120, Mid 2010) - Manual (Page 5)

&H3 AT&H3 Flow control for transmitted data - Enable both software
and hardware flow control
&I0 AT&I0 Flow control for received data - Disable flow control X
&I1 AT&I1 Flow control for received data - send XON/XOFF signals
to modems on both ends
&I2 AT&I2 Flow control for received data - send XON/XOFF signals
to your modem only
&I3 AT&I3 HP Eng/Ack in Host mode
&I4 AT&I4 HP Eng/Ack in Terminal Mode
&I5 AT&I5 Flow control for received data - If error correction is used,
send XON/XOFF signals to your modem only; if data
compression is not used, look for incoming XON/XOFF
&K0 AT&K0 Disable data compression
&K1 AT&K1 Enable data compression (V.42bis, MNP 5, NONE) X
&K2 AT&K2 Enable data compression (forces V.42bis)
&K3 AT&K3 Use selective data compression
&M0 AT&M0 Disable error correction in 1200 bps and faster transfers
&M4 AT&M4 Allow V.42 or MNP error correction in 1200 bps and faster
transfers X
&M5 AT&M5 Allow either V.42 or MNP error correction in 1200 bps and
faster transfers
&N0 AT&N0 Highest link speed X
&N1 AT&N1 Link Speed - 300 bps
&N2 AT&N2 Link Speed - 1200 bps
&N3 AT&N3 Link Speed - 2400 bps
&N4 AT&N4 Link Speed - 4800 bps
&N5 AT&N5 Link Speed - 7200 bps
&N6 AT&N6 Link Speed - 9600 bps
&N7 AT&N7 Link Speed - 12000 bps
&N8 AT&N8 Link Speed - 14400 bps
&N9 AT&N9 Link Speed - 16800 bps
&N10 AT&N10 Link Speed - 19200 bps
&N11 AT&N11 Link Speed - 21600 bps
&N12 AT&N12 Link Speed - 24000 bps
&N13 AT&N13 Link Speed - 26400 bps
&N14 AT&N14 Link Speed - 28800 bps
&N15 AT&N15 Link Speed - 31200 bps
&N16 AT&N16 Link Speed - 33600 bps
&N17 AT&N17 Link Speed - 33333 bps
&N18 AT&N18 Link Speed - 37333 bps
&N19 AT&N19 Link Speed - 41333 bps
&N20 AT&N20 Link Speed - 42666 bps
&N21 AT&N21 Link Speed - 44000 bps
&N22 AT&N22 Link Speed - 45333 bps
&N23 AT&N23 Link Speed - 46666 bps