Modulation Control Commands; Ms - Modulation Selection; Table 3-1. +Ms Command Supported Rates - Conexant H08-15355F Reference Manual

3.2.4 Modulation Control Commands

3.2.4.1 +MS - Modulation Selection

This extended-format compound parameter controls the manner of operation of the modulation capabilities in the modem. It
accepts six subparameters:
Syntax
+MS=[<carrier>[,<automode>[,<min_tx_rate>[,<max_tx_rate>[,<min_rx_rate>[,<max_rx_rate>]]]]]]
Where: Possible <carrier>, <min_tx_rate>, <max_tx_rate>, <min_rx_rate>, and <max_rx_rate values are
listed in are Table 3-1 (see definitions below).
Modulation <carrier>
Bell 103 B103
Bell 212 B212
V.21 V21
V.22 V22
V.22 bis V22B
V.23 V23C
V.32 V32
V.32 bis V32B
V.34 V34
K56flex K56
V.90 V90
Defined Values
<carrier> A string which specifies the preferred modem carrier to use in originating or answering a connection.
<carrier> values are strings of up to eight characters, consisting only of numeric digits and upper
case letters. <carrier> values for ITU standard modulations take the form: <letter><1-4 digits><other
letters as needed>. Defined values are listed in Table 3-1.
<automode> A numeric value which enables or disables automatic modulation negotiation (e.g., ITU-T V.32 bis
Annex A or V.8).
<min_rx_rate> and
<max_rx_rate> Numeric values which specify the lowest (<min_rx_rate>) and highest (<max_rx_rate>) rate at which
the modem may establish a receive connection. May be used to condition distinct limits for the
receive direction as distinct from the transmit direction. Values for this subparameter are decimal
encoded, in units of bit/s. The possible values for each modulation are listed in Table 3-1. Actual
values will be limited to possible values corresponding to the entered <carrier> and fall-back
<carrier> as determined during operation. (Default = lowest (<min_rx_rate>) and highest
(<max_rx_rate>) rate supported by the selected carrier.)
<min_tx_rate> and
<max_tx_rate> Numeric values which specify the lowest (<min_tx_rate>) and highest (<max_tx_rate>) rate at which
the modem may establish a transmit connection. Non-zero values for this subparameter are decimal
encoded, in units of bit/s. The possible values for each modulation are listed in Table 3-1. Actual
values will be limited to possible values corresponding to the entered <carrier> and fall-back
<carrier> as determined during operation. (Default = lowest (<min_tx_rate>) and highest
(<max_tx_rate>) rate supported by the selected carrier.)
3-24
Command Reference Manual

Table 3-1. +MS Command Supported Rates

Possible (<min_rx_rate>, <min_rx_rate>, (<min_tx_rate>), and <max_tx_rate>) Rates (bps)
300
1200 Rx/75 Tx or 75 Rx/1200 Tx
300
1200
2400 or 1200
1200Rx/75Tx or 75Rx/1200Tx
9600 or 4800
14400, 12000, 9600, 7200, or 4800
33600, 31200, 28800, 26400, 24000, 21600, 19200, 16800, 14400, 12000, 9600, 7200, 4800, or 2400
56000, 54000, 52000, 50000, 48000, 46000, 44000, 42000, 40000, 38000, 36000, 34000, 32000
56000, 54667, 53333, 52000, 50667, 49333, 48000, 46667, 45333, 42667, 41333, 40000, 38667, 37333,
36000, 34667, 33333, 32000, 30667, 29333, 28000
0 Automode disabled.
1 Automode enabled. (Default.)
Conexant
1118