Multi-Tech Systems MT5600BA-V92 Country/Region of Installation, Command +MS= Modulation Selection

					Chapter 2 – AT Commands
Command:	+GCI	Country/Region of Installation
Description:		This extended syntax command selects and indicates the region/country of installation for
		the modem. The parameter selects the settings for any operational parameters that need
		to be adjusted for national regulations or telephone networks.
		Syntax: +GCI=<region_code>Defined Values: <region_code>Example: Euro/Nam = B5.
		For a list of regions/countries approvals and codes, see the Multi-Tech Web site at:
		http://www.multitech.com/PRODUCTS/Info/approvals
Default:		If the modem is specified for use in only one country, the country code is the default.
		Otherwise, the default is defined by the OEM. The factory default is B5.
Report Commands:		+GCI?	Reports current or selected values.
		+GCI=?	Reports supported range of parameter values.
Command:	+MS= Modulation Selection
Values & Default:		See description.
Description:		This extended-format command selects modulation and, optionally, enables or disables
		automode, specifies the lowest and highest connection rates, selects µ-Law or A-Law
		codec type, and specifies the highest transmit rate using one to five subparameters.
		The command format is:
		+MS=[+MS=[<carrier>[,<automode>[,<min_TX_rate>[,<max_TX_rate>[,min_RX_rate>[,<max_RX_rate>]]]]]]
		Subparameters that are not entered retain their current value. Commas separate optional
		subparameters and should be inserted to skip a subparameter. Example: +MS=,0,<CR>
		disables automode and keeps all other settings at their current values.
Subparameters:		mod – A decimal number that specifies the preferred modulation (automode enabled) or
		the modulation to use in originating or answering a connection (auto-mode disabled).
		+MS Command Supported Rates
		Modulation		<carrier>	Possible (<min_rx_rate>,<max_rx_rate>,(<min_tx_rate>), and
					<max_tx_rate>) Rates (bps)
		Bell 103		B103	300
		Bell 212		B212	1200 Rx/75 Tx or 75 Rx/1200 Tx
		V.21		V21	300
		V.22		V22	1200
		V.22 bis		V22B	2400 or 1200
		V.23		V23C	1200
		V.32		V32	9600 or 4800
		V.32 bis		V32B	14400, 12000, 9600, 7200, or 4800
		V.34		V34	33600, 31200, 28800, 26400, 24000, 21600, 19200, 16800, 14400,
					12000, 9600, 7200, 4800, or 2400
		V.90		V90	56000, 54667, 53333, 52000, 50667, 49333, 48000, 46667, 45333,
					44000, 42667, 41333, 40000, 38667, 37333, 36000, 34667, 33333,
		V.92 downstream V92			32000, 30667, 29333, 28000
					same as V.90 above
		V.92 upstream		V92	48000, 46667, 45333, 44000, 42667, 41333, 40000, 38667, 37333,
					36000, 34667, 33333, 32000, 30667, 29333, 28000, 26667, 25333,

24000

Note: Some <carrier> values may not be supported by certain model models.

automode – An optional numeric value that enables or disables automatic modulation negotiation using V.8bis/V.8 or V.32bis Annex A. The options are:

0 = Disables automode

1 = Enables automode (default)

<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 the table above. 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 the table above. 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.)

Multi-Tech Systems, Inc. AT Commands Reference Guide (S000273G) 14