51
CHAPTER 5: AT Commands, S-Registers, and Result Codes
automode
An optional numeric value that enables or disables
automatic modulation negotiation using V.8 bis/V.8
or V.32 bis Annex A. Automode is disabled if values
are specified for the max_rate and max_rx_rate
parameters. The options are:
0 Disable
automode
1
Enable automode (default)
max_rate
An optional number that specifies the highest rate
at which the modem may establish an upstream
(transmit) connection. The value is decimal coded
in units of bps, for example, 33600 specifies the
highest rate to be 33,600 bps.
0
Maximum rate determined by the modulation
selected in mod (default).
300–33600
Maximum rate value limited by the modulation
selected in mod. For valid max_rate values for each
mod value, see the following table.
mod value
Valid
max_rate
values (bps)
V92, V90, V34
33,600, 31,200, 28,800, 26,400, 24,000, 21,600,
19,200, 16,800, 14,400, 12,000, 9600, 7200, 4800,
2400
V32B
19,200, 16,800, 14,400, 12,000, 9600, 7200, 4800
V32
14,400, 12,000, 9600, 7200, 4800
V22B
2400
V22, V23C, Bell 212A
1200
V21, Bell 103
300
max_rx_rate
An optional number that specifies the highest rate
at which the modem may establish a downstream
(receive) connection. The value is decimal coded in
units of bps. For example, 28800 specifies the
highest rate to be 28,800 bps.
