|
GM144E (REV.1)
MAXTECH
GM144E (REV.1)
|
Card Type
|
Fax, Modem (synchronous/asynchronous)
|
|
Chip Set
|
Unidentified
|
|
Maximum Data Rate
|
14.4Kbps
|
|
Maximum Fax Rate
|
14.4Kbps
|
|
Data Bus
|
External
|
|
Fax Class
|
Class I & II
|
|
Data Modulation Protocol
|
Bell 103/212A
ITU-T V.22, V.22bis, V.32, V.32bis
|
|
Fax Modulation Protocol
|
ITU-T V.17, V.21CH2, V.27ter, V.29
|
|
Error Correction/Compression
|
MNP5, V.42, V.42bis
|

|
CONNECTIONS
|
|
Function
|
Label
|
Function
|
Label
|
|
Line in
|
CN1
|
DC power
|
CN4
|
|
Line out
|
CN2
|
Power switch
|
SW1
|
|
RS-232/422
|
CN3
|
|
|
|
USER CONFIGURABLE SETTINGS
|
|
Setting
|
Label
|
Position
|
|
í SMART mode
|
JP1
|
Pins 2 & 3 closed
|
|
DUMB mode
|
JP1
|
Pins 1 & 2 closed
|
|
DIAGNOSTIC LED(S)
|
|
LED
|
Color
|
Status
|
Condition
|
|
TST
|
Red
|
On
|
Normal operation
|
|
TST
|
Red
|
Flash
|
Modem has detected and corrected error
|
|
HS
|
Red
|
On
|
Modem is operating at 4800bps or faster
|
|
HS
|
Red
|
Off
|
Modem is operating at slower than 4800bps
|
|
AA
|
Red
|
On
|
Auto-answer enabled
|
|
AA
|
Red
|
Off
|
Auto-answer disabled
|
|
AA
|
Red
|
Blinking
|
Phone is ringing
|
|
CD
|
Red
|
On
|
Carrier signal detected
|
|
CD
|
Red
|
Off
|
Carrier signal not detected
|
|
OH
|
Red
|
On
|
Modem is off-hook
|
|
OH
|
Red
|
Off
|
Modem is on-hook
|
|
RD
|
Red
|
On
|
Modem is receiving data
|
|
RD
|
Red
|
Off
|
Modem is not receiving data
|
|
SD
|
Red
|
On
|
Modem is transmitting data
|
|
SD
|
Red
|
Off
|
Modem is not transmitting data
|
|
TR
|
Red
|
On
|
DTR signal is high
|
|
TR
|
Red
|
Off
|
DTR signal is low
|
|
MR
|
Red
|
On
|
Power is on
|
|
MR
|
Red
|
Off
|
Power is off
|
Proprietary AT Command Set
|
ACCEPT MNP RELIABLE MODE
|
|
Type:
|
Immediate
|
|
Format:
|
AT [cmds] \U [cmds]
|
|
Description:
|
Accept remote modem’s request for MNP reliable mode
|
|
AUTO-RELIABLE FALLBACK CHARACTER
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] %An [cmds]
|
|
Default:
|
0
|
|
Range:
|
0-127
|
|
Unit:
|
ASCII
|
|
Description:
|
Sets the character used as the auto-reliable fallback character; %A0 will disable this function.
|
|
AUTO-RELIABLE TIME BUFFER CONFIGURATION
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] \Cn [cmds]
|
|
Description:
|
Controls the handling of incoming data during auto-reliable time period
|
|
Command
|
Function
|
|
í \C0
|
Data is discarded
|
|
\C1
|
Data is buffered
|
|
\C2
|
Data is discarded; modem returns to normal mode on receiving auto-reliable fallback character.
|
|
AUTO-RETRAIN
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] %En [cmds]
|
|
Description:
|
Controls auto-retrain mode
|
|
Command
|
Function
|
|
%E0
|
Auto-retrain disabled
|
|
í %E1
|
Auto-retrain enabled
|
|
BIT-MAPPED REGISTER S14
|
|
Format:
|
AT [cmds] S14=n [cmds]
|
|
Default:
|
Unidentified
|
|
Range:
|
0-255
|
|
Unit:
|
Bit-mapped
|
|
Description:
|
Controls echo, result codes and display, dumb mode, dial mode, stored profile, and answer/originate mode.
|
|
Bit
|
Value
|
Function
|
|
0
|
0
í 1
|
Command echo disabled
Command echo enabled
|
|
2, 1
|
í 00
01
10
|
Result codes enabled
Result codes disabled
Result codes enabled in originate mode only
|
|
3
|
0
í 1
|
Display result codes in numeric format
Display result codes in verbose format
|
|
4
|
í 0
1
|
Dumb mode disabled
Dumb mode enabled
|
|
5
|
í 0
1
|
Tone dial enabled
Pulse dial enabled
|
|
6
|
0
1
|
stored profile 0
stored profile 1
|
|
7
|
0
í 1
|
Answer mode enabled
Originate mode enabled
|
|
BIT-MAPPED REGISTER S16
|
|
Type:
|
Register
|
|
Format:
|
AT [cmds] S16=n [cmds]
|
|
Default:
|
23
|
|
Range:
|
0-55
|
|
Unit:
|
Bit-mapped
|
|
Description:
|
Grants/denies remote digital loopback; controls clear down signal, auto-retrain, and extended result codes.
|
|
Bit
|
Value
|
Function
|
|
0
|
0
í 1
|
Remote digital loopback denied
Remote digital loopback allowed
|
|
1
|
0
í 1
|
Disable clear down signal
Enable clear down signal
|
|
2
|
0
í 1
|
Auto-retrain disabled
Auto-retrain enabled
|
|
3
|
0
|
Not used
|
|
5, 4
|
00
í 01
10
11
|
Extended result codes disabled /DCE speed only
Extended result codes/DCE speed enabled
Extended result codes disabled /DTE speed only
Extended result codes/DTE speed enabled
|
|
BIT-MAPPED REGISTER S21
|
|
Format
|
AT [cmds] S21=n [cmds]
|
|
Default:
|
Unidentified
|
|
Range:
|
0-255
|
|
Unit:
|
Bit-mapped
|
|
Description:
|
Selects originate-only mode, line mode, CTS/DCD/DSR signals, low DTR action, and the long space disconnect function.
|
|
Bit
|
Value
|
Function
|
|
0
|
í 0
1
|
Disable originate-only mode
Enable originate-only mode
|
|
1
|
í 0
1
|
Switched line
Leased-line
|
|
2
|
0
1
|
CTS follows RTS
CTS forced high
|
|
4, 3
|
00
01
10
11
|
DTR signal ignored
Modem goes to command mode on low DTR
Modem disconnects on low DTR; Auto-Answer is disabled.
Modem is initialized on low DTR
|
|
5
|
0
í 1
|
DCD forced high
DCD normal
|
|
6
|
í 0
1
|
DSR forced high
DSR normal
|
|
7
|
í 0
1
|
Long space disconnect function disabled
Long space disconnect function enabled
|
|
BIT-MAPPED REGISTER S22
|
|
Format
|
AT [cmds] S22=n [cmds]
|
|
Default:
|
118
|
|
Range:
|
0-255
|
|
Unit:
|
Bit-mapped
|
|
Description:
|
Controls speaker volume and controls, limits results codes, and pulse dial make/break ratio.
|
|
Bit
|
Value
|
Function
|
|
1, 0
|
00
01
í 10
11
|
Low level volume
Low level volume
Medium level volume
High level volume
|
|
3, 2
|
00
í 01
10
11
|
Speaker off
Speaker off on carrier
Speaker always on
Speaker on during handshake
|
|
6 - 4
|
000
100
101
110
í 111
|
Basic result codes only enabled
Basic and connection speed result codes enabled
Basic and connection speed result codes and dial-tone detection enabled
All result codes except dial-tone detection enabled
All result codes enabled
|
|
7
|
í 0
1
|
39/61ms at 10pps (North America)
33/67ms at 10pps (Europe)
|
|
BIT-MAPPED REGISTER S23
|
|
Format
|
AT [cmds] S23=n [cmds]
|
|
Default:
|
Unidentified
|
|
Range:
|
0-186
|
|
Unit:
|
Bit-mapped
|
|
Description:
|
Controls DTE rate and parity, and sets guard tone.
|
|
Bit
|
Value
|
Function
|
|
3 - 0
|
0000
0010
0011
0100
í 0110
1000
1001
1010
1011
1100
1101
|
Sets serial port speed to 300bps
Sets serial port speed to 1200bps
Sets serial port speed to 2400bps
Sets serial port speed to 4800bps
Sets serial port speed to 9600bps
Sets serial port speed to 14400bps
Sets serial port speed to 19200bps
Sets serial port speed to 28800bps
Sets serial port speed to 38400bps
Sets serial port speed to 57600bps
Sets serial port speed to 115200bps
|
|
5, 4
|
í 00
01
10
11
|
Parity even
Space Parity
Parity odd
Mark or No Parity
|
|
7, 6
|
í 00
01
10
|
Guard tone disabled
Guard tone 550Hz enabled
Guard tone 1800Hz enabled
|
|
BIT-MAPPED REGISTER S27
|
|
Format
|
AT [cmds] S27=n [cmds]
|
|
Default:
|
Unidentified
|
|
Range:
|
0-235
|
|
Unit:
|
Bit-mapped
|
|
Description:
|
Selects synchronous/asynchronous mode, clock source, and sets DCE speed.
|
|
Bit
|
Value
|
Function
|
|
1, 0
|
í 00
01
10
11
|
Asynchronous mode, serial port speed follows connect speed
Asynchronous off-line command mode and synchronous connect mode
Synchronous connect mode
Asynchronous off-line command mode on low DTR, synchronous connect mode on high DTR
|
|
3, 2
|
í 00
01
10
|
Local modem generates transmit clock source
Local DTE generates transmit clock source
Remote DCE/DTE generates transmit clock source
|
|
7 - 4
|
0000
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
|
Sets DCE speed to 300bps
Sets DCE speed to 1200bps
Sets DCE speed to 2400bps
Sets DCE speed to 4800bps
Sets DCE speed to 7200bps
Sets DCE speed to 9600bps
Sets DCE speed to 12000bps
Sets DCE speed to 14400bps
Sets DCE speed to 16800bps
Sets DCE speed to 19200bps
Sets DCE speed to 21600bps
Sets DCE speed to 24000bps
Sets DCE speed to 26400bps
Sets DCE speed to 28800bps
|
|
BIT-MAPPED REGISTER S28
|
|
Format
|
AT [cmds] S28=n [cmds]
|
|
Default:
|
16
|
|
Range:
|
0-149
|
|
Unit:
|
Bit-mapped
|
|
Description:
|
Controls power-on auto-connect, security call-back, auto-rate negotiation ,and DCE protocol.
|
|
Bit
|
Value
|
Function
|
|
0
|
í 0
1
|
Disabled power-on auto-connect
Enabled power-on auto-connect
|
|
2, 1
|
í 00
01
10
|
Disabled security call-back
Password security check only
Enabled security call-back
|
|
3
|
í 0
1
|
Disable auto-rate negotiation
Enable auto-rate negotiation
|
|
7 - 4
|
0000
í 0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
|
ITU-T mode
Bell mode
Auto-scan mode
V.23 mode
Set Connection speed to 300bps
Set Connection speed to 1200bps
Set Connection speed to 2400bps
Set Connection speed to 4800bps
Set Connection speed to 9600bps
Set Connection speed to 14400bps
Set Connection speed to 16800bps
Set Connection speed to 19200bps
Set Connection speed to 21600bps
Set Connection speed to 24000bps
Set Connection speed to 26400bps
Set Connection speed to 28800bps
|
|
BREAK SEND
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] \Bn [cmds]
|
|
Default:
|
3
|
|
Range:
|
1-9
|
|
Unit:
|
.1 second
|
|
Description:
|
Sends break to modem
|
|
BREAK TYPE
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] \Kn [cmds]
|
|
Description:
|
Configures action of break signal
|
|
Command
|
Break from DTE
in Reliable/Normal
mode
|
Break from DTE
in Direct mode
|
Modem receives \B
|
Break received from remote modem
|
|
\K0
|
No break sent to remote modem
|
On-line command mode enabled, break sent to remote modem
|
Break sent to remote modem and buffered cleared
|
Buffers cleared, break sent to DTE
|
|
\K1
|
Break sent to remote modem immediately and clear buffered
|
Send break to remote modem immediately
|
Break sent to remote modem and buffered cleared
|
Buffers cleared, break sent to DTE
|
|
\K2
|
No break sent to remote modem
|
On-line command mode enabled, break sent to remote modem
|
Send break to remote modem immediately
|
Break sent immediately to DTE
|
|
\K3
|
Send break to remote modem immediately
|
Send break to remote modem immediately
|
Send break to remote modem immediately
|
Break sent immediately to DTE
|
|
\K4
|
No break sent to remote modem
|
On-line command mode enabled, break sent to remote modem
|
Send break with transmitted data
|
Break sent with received data to the DTE
|
|
í \K5
|
Send break with transmitted data
|
Send break to remote modem immediately
|
Send break with transmitted data
|
Break sent with received data to the DTE
|
|
CLEAR DOWN SIGNAL
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] %Dn [cmds]
|
|
Description:
|
Controls clear down signal
|
|
Command
|
Function
|
|
%D0
|
Disable clear down signal
|
|
í %D1
|
Enable clear down signal
|
|
COMPRESSION
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] %Cn [cmds]
|
|
Description:
|
Selects data compression
|
|
Command
|
Function
|
|
%C0
|
Data compression disabled
|
|
í %C1
|
Data compression enabled
|
|
CONNECT MODE
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] \Nn [cmds]
|
|
Description:
|
Controls the type of connection the modem will operate in
|
|
Command
|
Function
|
|
\N0
|
Normal mode enabled
|
|
\N1
|
Direct mode enabled
|
|
\N2
|
MNP mode enabled
|
|
\N3
|
MNP reliable mode enabled
|
|
\N4
|
V.42 reliable mode enabled
|
|
\N5
|
Reliable mode enabled
|
|
í \N6
|
Auto-reliable mode enabled
|
|
CONVERT TO MNP RELIABLE MODE
|
|
Type:
|
Immediate
|
|
Format:
|
AT [cmds] \Y [cmds]
|
|
Description:
|
Converts to MNP reliable mode from normal or direct mode
|
|
COUNTRY CODE
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] *NCn [cmds]
|
|
Description:
|
Select country code to be used
|
|
Command
|
Function
|
|
0
|
Austria
|
|
1
|
Belgium
|
|
2
|
Denmark
|
|
3
|
Finland
|
|
4
|
France
|
|
5
|
Germany
|
|
6
|
Ireland
|
|
7
|
Italy
|
|
8
|
Luxembourg
|
|
9
|
Netherlands
|
|
10
|
Norway
|
|
11
|
Portugal
|
|
12
|
Spain
|
|
13
|
Sweden
|
|
14
|
Switzerland
|
|
15
|
United Kingdom
|
|
16
|
New Zealand
|
|
17
|
Australia
|
|
DISPLAY PASSWORD
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] \P=? [cmds]
|
|
Description:
|
Displays a password from non-volatile memory
|
|
Note: NO PASSWORD SAVED is returned if no password was saved.
|
|
ECHO DATA
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] \En [cmds]
|
|
Description:
|
Enables modem to echo received data
|
|
Command
|
Function
|
|
í \E0
|
Data echo disabled
|
|
\E1
|
Data echo enabled
|
|
EXTENDED RESULT CODES
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] \Vn [cmds]
|
|
Description:
|
Selects extended result codes
|
|
Command
|
Function
|
|
\V0
|
Extended result codes/DCE speed disabled
|
|
í \V1
|
Extended result codes/DCE speed enabled
|
|
\V2
|
Extended result codes/DTE speed disabled
|
|
\V3
|
Extended result codes/DTE speed enabled
|
|
FLOW CONTROL
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] \Gn [cmds]
|
|
Description:
|
Selects modem port flow control
|
|
Command
|
Function
|
|
í \G0
|
Flow control disabled
|
|
\G1
|
Flow control enabled
|
|
FLOW CONTROL TYPE
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] \Qn [cmds]
|
|
Description:
|
Sets type of flow control used by modem
|
|
Command
|
Function
|
|
\Q0
|
Flow control disabled
|
|
\Q1
|
Bi-directional XON/XOFF flow control enabled
|
|
\Q2
|
CTS flow control by DCE enabled
|
|
í \Q3
|
Bi-directional RTS/CTS flow control enabled
|
|
\Q4
|
Unidirectional XON/XOFF flow control by DCE enabled
|
|
INACTIVITY TIMER
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] \Tn [cmds]
|
|
Default:
|
0
|
|
Range:
|
0-90
|
|
Unit:
|
1 minute
|
|
Description:
|
Sets the length of time that the modem does not receive information before it disconnects.
|
|
INITIATE MNP RELIABLE MODE
|
|
Type:
|
Immediate
|
|
Format:
|
AT [cmds] \O [cmds]
|
|
Description:
|
Initiates MNP reliable mode from normal or direct mode
|
|
LOCK SERIAL PORT
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] \Jn [cmds]
|
|
Description:
|
Sets operation of serial port speed
|
|
Command
|
Function
|
|
í \J0
|
Serial speed locked
|
|
\J1
|
Serial speed follows connect speed
|
|
MAXIMUM BLOCK SIZE FOR TRANSMISSION
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] \An [cmds]
|
|
Description:
|
Sets the maximum transmittable block size
|
|
Command
|
Function
|
|
\A0
|
MNP block size is 64 characters
|
|
\A1
|
MNP block size is 128 characters
|
|
\A2
|
MNP block size is 192 characters
|
|
í \A3
|
MNP block size is 256 characters
|
|
PASSWORD
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] \P=n [cmds]
|
|
Description:
|
Stores a password in non-volatile memory
|
|
Note: Maximum of 7 characters and password is not case sensitive.
|
|
POWER-ON AUTO-CONNECT
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] %Pn [cmds]
|
|
Description:
|
Controls power-on auto-connect
|
|
Command
|
Function
|
|
í %P0
|
Disabled power-on auto-connect
|
|
%P1
|
Enabled power-on auto-connect
|
|
REPORT INFORMATION
|
|
Type:
|
Immediate
|
|
Format:
|
AT [cmds] In [cmds]
|
|
Description:
|
Displays information requested
|
|
Command
|
Function
|
|
I0
|
Reports product identification code
|
|
I1
|
Reports ROM checksum
|
|
I2
|
Internal memory test
|
|
I3
|
Reports V.42bis ID
|
|
I4
|
Reports internal ID
|
|
I90
|
Report country code
|
|
SECURITY CALL-BACK
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] %Sn [cmds]
|
|
Description:
|
Controls security call-back
|
|
Command
|
Function
|
|
í %S0
|
Disabled security call-back
|
|
%S1
|
Enabled security call-back
|
|
%S2
|
Password security check only
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SWITCH TO NORMAL MODE
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Type:
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Immediate
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Format:
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AT [cmds] \Z [cmds]
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Description:
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Switches to normal mode from MNP mode
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TRANSMISSION LEVEL
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Type
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Configuration
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Format
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AT [cmds] %Ln [cmds]
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Default
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12
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Range
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0-15
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Unit
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-1 dBm
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Description
|
Sets the signal level for transmission
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XON/XOFF PASS-THROUGH
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Type:
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Configuration
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Format:
|
AT [cmds] \Xn [cmds]
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Description:
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Selects whether XON/XOFF signals are sent to remote modem
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Command
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Function
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í \X0
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XON/XOFF signals trapped by local modem
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\X1
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XON/XOFF passed through local modem
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