MT5656ZDX Multi-Tech Systems, MT5656ZDX Datasheet - Page 14

• Manufacturer Part Number: MT5656ZDX
• Description: MODEM V.92 DATA/FAX
• Manufacturer: Multi-Tech Systems
• Series: MultiModem® ZDXr

Specifications of MT5656ZDX

• Data Format: V.92
• Interface: RS-232
• Voltage - Supply: 9V
• Mounting Type: Desktop
• Package / Case: 5.7" L x 4.3" W x 1.0" H (145mm x 109mm x 25mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 881-1020

Command:
Description:
Default:
Report Commands:
Command:
Values & Default:
Description:
Subparameters:
Multi-Tech Systems, Inc. AT Commands Reference Guide (S000273F)
+MS= Modulation Selection
+GCI Country/Region of Installation
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
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.
+GCI?
+GCI=?
See 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.
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).
automode – An optional numeric value that enables or disables automatic modulation
<min_rx_rate> and <max_rx_rate>
<min_tx_rate> and <max_tx_rate>
+MS Command Supported Rates
Modulation
Bell 103
Bell 212
V.21
V.22
V.22 bis
V.23
V.32
V.32 bis
V.34
V.90
V.92
V.92
Note: Some <carrier> values may not be supported by certain model models.
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.)
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.)
downstream
upstream
Reports current or selected values.
Reports supported range of parameter values.
negotiation using V.8bis/V.8 or V.32bis Annex A. The options are:
0 = Disables automode
1 = Enables automode (default)
<carrier>
B103
B212
V21
V22
V22B
V23C
V32
V32B
V34
V90
V92
V92
Possible (<min_rx_rate>,<max_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
1200
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, 54667, 53333, 52000, 50667, 49333, 48000, 46667, 45333,
44000, 42667, 41333, 40000, 38667, 37333, 36000, 34667, 33333,
32000, 30667, 29333, 28000
same as V.90 above
48000, 46667, 45333, 44000, 42667, 41333, 40000, 38667, 37333,
36000, 34667, 33333, 32000, 30667, 29333, 28000, 26667, 25333,
24000
Chapter 2 – AT Commands
14