3Com 56K Command Reference Manual page 156

B-8 A B: A
PPENDIX LPHABETIC
C S
OMMAND UMMARY
Command Function
&K3
&Ln Line type.
&L0
&Mn Enable ARQ (error control) protocol. Both your modem and the
remote device must use the same protocol.
&M0
&M4
&Nn Sets fixed link speed.
&Nn&UN Sets highest and lowest link speeds
n=1
n = 1 -16
Selective data compression. The modem
negotiates only for V.42bis compression, and
disables MNP Level 5 (MNP5) compression. Use
this setting to transfer compressed files.
Normal.
Normal mode, no error control. Due to the nature
of phone line channels, this is never
recommended for calls above 2400 bps.
Normal/ARQ mode. If an ARQ connection isn't
made, the modem operates in Normal mode as
though it were set to &M0.
Variable rate. The modem negotiates with the
remote device for the highest possible connection
rate, depending on the capabilities of the remote
device.
Fixed rate. The modem connects only if the
remote device is operating at the same rate. You
can use this feature to filter out calls at other than
a specific rate for security or other reasons.
The connection rate must always be lower than or
equal to the serial port rate.
n=1
n=2
n=3
n=4
n=5
n=6
n=7
n=8
n=9
n=10
n=11
n=12
300 bps
1200 bps
2400 bps
4800 bps
7200 bps
9600 bps
12000 bps
14400 bps
16800 bps
19200 bps
21600 bps
24000 bps