MULTI-TECH SYSTEMS, INC.
MTA128ST
Card Type | ISDN TA |
Chip Set | Unidentified |
I/O Options | Power, 25-pin DTE serial port, ISDN interface (RJ-45), Auxiliary interface (RJ-11) |
ISDN Data Rate | 128Kbps |
ISDN Modulation Protocol | V.110, V.120, X.75, ML-PPP, SoftBond |
Error Correction/Compression | Unidentified |
Data Bus | External |
CONNECTIONS | |||
Function | Label | Function | Label |
Power connector | CN1 | Auxiliary interface (RJ-11 connector) | CN3 |
25-pin serial port | CN2 | ISDN interface (RJ-45 connector) | CN4 |
DIAGNOSTIC LEDS | |||
LED | Color | Status | Condition |
TD | Unidentified | Blinking | Data is being transmitted |
TD | Unidentified | Off | Data is not being transmitted |
RD | Unidentified | Blinking | Data is being received |
RD | Unidentified | Off | Data is not being received |
LS | Unidentified | On | Link with central office is good |
LS | Unidentified | Blinking (slow) | SPIDS have not been verifies with central office |
LS | Unidentified | Blinking (fast) | One SPID has been verified with central office |
LS | Unidentified | Off | Link with central office is broken |
B1 | Unidentified | On | Active data connection on B-channel 1 |
B1 | Unidentified | Blinking (slow) | Active analog connection on B-channel 1 |
B1 | Unidentified | Blinking (fast) | Connection is being made |
B1 | Unidentified | Off | B-channel 1 connection is broken |
B2 | Unidentified | On | Active data connection on B-channel 2 |
B2 | Unidentified | Blinking (slow) | Active analog connection on B-channel 2 |
B2 | Unidentified | Blinking (fast) | Connection is being made |
B2 | Unidentified | Off | B-channel 2 connection is broken |
TR | Unidentified | On | Data terminal is ready |
TR | Unidentified | Off | Data terminal is not ready |
OH | Unidentified | On | Device is off-hook |
OH | Unidentified | Off | Device is on-hook |
128 | Unidentified | On | B-channels have been multiplexed into a single 128Kbps link |
128 | Unidentified | Off | B-channels have not been multiplexed into a single 128Kbps link |
Note: LED 128 also indicates what protocol is being used in conjunction with P1, and P2 |
DATA PROTOCOL LEDS | |||
Protocol | 128 | P1 | P2 |
V.110 | Off | Off | Off |
V.120 | Off | Off | On |
X.75 (1 channel) | Off | On | Off |
X.75 (2 channel) | On | On | Off |
PPP (1 channel) | Off | On | On |
MLPPP (2 channel) | On | On | On |
Note: P1 and P2 LEDs blink to indicate active data compression |
SUPPORTED COMMAND SET |
Basic AT Commands |
AT, ‘+++’ |
A, E, H, Q, V |
&S, &Z |
S Registers |
S0, S1, S2, S3, S4, S5, S25 |
Note: See MHI Help File for full command documentation. |
Proprietary AT Command Set
COMMUNICATIONS MODE | |
Type: | Configuration |
Format: | AT [cmds] &Mn [cmds] |
Description: | Selects communications mode. |
Note: &M1 is not currently supported by TA | |
Command | Mode |
&M0 | Asynchronous mode |
&M1 | Synchronous mode |
DATA COMPRESSION | |
Type: | Configuration |
Format: | AT [cmds] &Kn [cmds] |
Description: | Enables/disables data compression |
Command | Function |
í &K0 | Data compression disabled |
&K1 | Data compression enabled |
DATA CARRIER DETECT (DCD) | |
Type: | Configuration |
Format: | AT [cmds] &Cn [cmds] |
Description: | Selects whether the DCD option is enabled or disabled |
Command | Function |
&C0 | DCD enabled |
í &C1 | DCD enabled after carrier signal detected |
&C2 | DCD drops after disconnect for a time specified by register S10 |
DATA TERMINAL READY (DTR) | ||
Type: | Configuration | |
Format: | AT [cmds] &Dn [cmds] | |
Description: | Selects modem response to DTR | |
Command | Mode | |
&D0 | Ignore transition of DTR status | |
í &D1 | Switch to command mode if DTR is low | |
&D2 | Abort connection if DTR is low, return to command mode and disable auto-answer. If device is off-line, it will neither answer nor dial when DTR is low | |
&D3 | Abort connection and reinitialize on low DTR |
DIAL | |
Type: | Immediate |
Format: | AT [cmds] D<#> [cmds] |
Description: | Dials ISDN telephone number according to any modifiers included in the string |
Note: | Any combination of modifiers can be used to produce the desired dial functions in sequence. |
Command | Function |
DS=n | Dial stored telephone number n |
FACTORY DEFAULT PROFILE | |
Type: | Configuration |
Format: | AT [cmds] &F [cmds] |
Description: | Sets values in active profile to values found in the default profile |
Command | Function |
&F0 | Load quick setup profile 0 (modem standard) |
&F1 | Load quick setup profile 1 (V.110) |
&F2 | Load quick setup profile 2 (V.120) |
&F3 | Load quick setup profile 3 (X.75) |
&F4 | Load quick setup profile 4 (MLPPP) |
FLOW CONTROL | |
Type: | Configuration |
Format: | AT [cmds] &En [cmds] |
Description: | Enables flow control options |
Command | Function |
&E3 | Flow control disabled |
&E4 | RTS to CTS flow control enabled |
&E5 | XON/XOFF flow control enabled |
&E6 | When pacing is active, XON/XOFF signals are responded to and discarded by TA |
&E7 | When pacing is active, XON/XOFF signals are passed through local modem |
&E12 | XON/XOFF pacing disabled |
&E13 | XON/XOFF pacing enabled |
ON-LINE | |
Type: | Immediate |
Format: | AT [cmds] On [cmds] |
Description: | Controls on-line command (data transmission) state options. |
Command | Function |
O0 | On-line command mode with no retraining enabled |
LIST ACTIVE PROFILE | |
Type: | Immediate |
Format: | AT [cmds] Ln [cmds] |
Description: | Lists active profile |
Command | Function |
L5 | Lists current operating parameters of TA |
L6 | Lists values currently stored in the S registers |
REPORT INFORMATION | |
Type: | Immediate |
Format: | AT [cmds] In [cmds] |
Description: | Displays information requested |
Command | Function |
I0 | Reports product ID |
I1 | Reports firmware version number |
I2 | MTS internal use |
RTS/CTS | |
Type: | Configuration |
Format: | AT [cmds] &Rn [cmds] |
Description: | Selects RTS/CTS options |
Command | Function |
&R0 | CTS follows RTS in data mode; RTS is ignored in command mode. |
í &R1 | CTS forced high, RTS is ignored. |
&R2 | CTS is forced high, but drops on disconnect for a time specified by register S10 |
SELECT CALL PROGRESS RESULT CODES | |
Type: | Configuration |
Format: | AT [cmds] Xn [cmds] |
Description: | Enables selection of tone detection and associated result code format options |
Command | Function |
X0 | Busy and dial tone detection disabled; result codes 0 - 4 enabled. |
X1 | Busy and dial tone detection disabled; result codes 0 - 5 & 10 - 14, 17 - 19, 28, & 32 enabled. |
X2 | Extended result codes enabled |
SOFT RESET | |
Type: | Immediate |
Format: | AT [cmds] Zn [cmds] |
Description: | Restores modem profiles previously saved in non-volatile RAM using the &W command. |
STORE ACTIVE PROFILE | |
Type: | Configuration |
Format: | AT [cmds] &Wn [cmds] |
Description: | Writes the values for the active profile into the non-volatile RAM |
Command | Function |
&W0 | Stores all current AT commands and S-register values in NVRAM |
í &W1 | Deletes custom settings on reset or power down. Factory default profile used |
Extended AT Command Set
ESCAPE SEQUENCE OPTIONS | |
Type: | Configuration |
Format: | AT [cmds] %En [cmds] |
Description: | Controls escape sequence options |
Note: | %E1 or %E3 may be entered in conjunction with %E5 |
Command | Function |
%E0 | Escape disabled |
%E1 | +++ escape option enabled |
%E2 | <BREAK> escape option enabled |
%E3 | +++ and <BREAK> escape options enabled |
%E4 | OK response to +++ disabled |
%E5 | OK response to +++ enabled |
SENDING METHOD | |
Type: | Configuration |
Format: | AT [cmds] %A97=n [cmds] |
Description: | Selects whether a "sending complete indication" signal is sent or overlap sending is implemented |
Command | Function |
%A97=0 | En bloc sending during cal SETUP enabled |
%A97=1 | Overlap sending during call SETUP enabled |
SERIAL PORT MODE | ||
Type: | Configuration | |
Format: | AT [cmds] %Sn [cmds] | |
Description: | Selects serial port speed | |
Command | Function | |
%S0 | Automatic speed selection enabled | |
%S1 | 460.8Kbs |
Special Commands
CONFIGURATION | |
Type: | Configuration |
Format | AT [cmds] @CONFIG [cmds] |
Description: | Starts the internal configuration utility. Command must be entered in terminal mode |
DATA DIRECTORY NUMBER | |
Type: | Configuration |
Format: | AT [cmds] !N1=n [cmds] |
Range: | 0 – 24 |
Unit: | 0 - 9, *, # |
Description: | Sets the directory number (DN) for the data channel |
DATA SPID | |
Type: | Configuration |
Format: | AT [cmds] !C6=n [cmds] |
Range: | 0 – 20 |
Unit: | ASCII |
Description: | Specifies the data service profile identifier assigned by the ISDN provider |
DATA TEI | |
Type: | Configuration |
Format: | AT [cmds] !D3=n [cmds] |
Range: | 0 - 63, 240, 241 |
Unit: | ASCII |
Description: | Sets the terminal endpoint identifier for the data channel. 240 (default) sets to automatic. 241 disables |
DISPLAY NETWORK CONFIGURATION | |
Type: | Immediate |
Format: | AT [cmds] !L [cmds] |
Description: | Displays the current DN, SPID, TEI, data protocol; and switch type |
EMBEDDED PROTOCOL ANALYZER | |
Type: | Configuration |
Format: | AT [cmds] >Dn [cmds] |
Description: | Analyzes various protocols |
Command | Function |
>D0 | Display B-channel traffic, decoded as V.120 |
>D1 | Display D-channel traffic, decoding layers 2 & 3 |
>D2 | Display D-channel traffic, decoding layers 2 |
>D3 | Display D-channel traffic, decoding layers 3 |
>D4 | Display B-channel traffic, decoded as X.75 |
>D98 | Embedded protocol analyzer disabled |
>D99 | Embedded protocol analyzer enabled |
ISDN D-CHANNEL PROTOCOL | |
Type: | Configuration |
Format: | AT [cmds] !C0=n [cmds] |
Description: | Selects network switch type |
Command | Function |
!C0=0 | AT&T 5ESS |
!C0=1 | Northern Telecom DMS-100 |
í !C0=2 | Euro-ISDN NET3 |
!C0=3 | 1TR6 |
!C0=4 | INS64 |
!C0=5 | US NI-1 |
!C0=6 | VN4 |
PERSISTANT DTR DIALING | |
Type: | Configuration |
Format: | AT [cmds] $Dn [cmds] |
Description: | Enables/disables persistent DTR dialing |
Command | Function |
í $D0 | PDD disabled |
$D1 | PDD enabled |
POWER UP DATA BITS | |
Type: | Configuration |
Format | AT [cmds] @P4=n [cmds] |
Description: | Sets the data bits at power up |
Command | Function |
@P4=7 | 7 bits |
@P4=8 | 8 bits |
POWER UP PARITY | |
Type: | Configuration |
Format | AT [cmds] @P3=n [cmds] |
Description: | Sets the parity at power up |
Command | Function |
@P3=0 | Odd parity enabled |
@P3=1 | Even parity enabled |
@P3=2 | Mark parity enabled |
@P3=3 | Space parity enabled |
@P3=4 | Parity disabled |
POWER UP SPEED | |
Type: | Configuration |
Format | AT [cmds] $SBn [cmds] |
Description: | Sets the serial speed negotiated when the TA powers up. If the speed is set to 460.8Kbps than the %S1 mode is initialized. %S1 mode is used for any other rate. |
Command | Function |
$SB3 | 300bps |
$SB12 | 1200bps |
$SB24 | 2400bps |
$SB48 | 4800bps |
$SB96 | 9600bps |
$SB192 | 19.2Kbps |
$SB384 | 38.4Kbps |
$SB576 | 57.6Kbps |
$SB1152 | 115.2Kbps |
$SB2304 | 230.4Kbps |
$SB3608 | 460.8Kbps |
POWER UP STOP BITS | |
Type: | Configuration |
Format | AT [cmds] @P6=n [cmds] |
Description: | Sets the data bits at power up |
Command | Function |
@P6=1 | 1 stop bit |
@P6=2 | 2 stop bits |
RATE ADAPTION PROTOCOL | |
Type: | Configuration |
Format: | AT [cmds] !Z=n [cmds] |
Description: | Select rate adaption protocol used to communicate with another TA |
Command | Function |
!Z=5 | V.120 |
!Z=6 | V.110 |
!Z=9 | ML-PPP |
!Z=12 | X.75 |
RECEIVE GAIN | |
Type: | Configuration |
Format: | AT [cmds] !RXGn [cmds] |
Range: | 0 - 10 |
Unit: | ASCII |
Description: | Controls the speaker level of an analog telephone device connected to the AUX port |
TRANSMIT GAIN | |
Type: | Configuration |
Format: | AT [cmds] !TXGn [cmds] |
Range: | 0 - 4 |
Unit: | ASCII |
Description: | Controls microphone amplification of an analog telephone device connected to the AUX port |
Note: Do not adjust the gain unless it is absolutely necessary. It is very high at non-zero levels. |
VOICE DIRECTORY NUMBER | |
Type: | Configuration |
Format: | AT [cmds] *!N1=n [cmds] |
Range: | 0 - 24 |
Unit: | 0 - 9, *, # |
Description: | Sets the directory number (DN) for the voice channel |
VOICE SPID | |
Type: | Configuration |
Format: | AT [cmds] *!C6=n [cmds] |
Range: | 0 - 20 |
Unit: | ASCII |
Description: | Specifies the voice service profile identifier assigned by the ISDN provider |
VOICE TEI | |
Type: | Configuration |
Format: | AT [cmds] *!D3=n [cmds] |
Range: | 0 - 63, 240, 241 |
Unit: | ASCII |
Description: | Sets the terminal endpoint identifier for the voice channel. 240 (default) sets to automatic. 241 disables |
XOFF SENDING | |
Type: | Configuration |
Format: | AT [cmds] #Xn [cmds] |
Description: | Determines whether single or multiple XOFF characters are sent |
Command | Function |
í #X0 | One XOFF character is sent until the buffer reaches the XON level |
#X1 | Multiple XOFF characters are sent for every character received after buffer reaches full level. |
S(Status) Registers
AUTO-PROTOCOL DETECTION | |
Type: | Register |
Format | AT [cmds] S52=n [cmds] |
Description: | Enables/disables mechanism for identifying type of protocol |
Command | Function |
S52=0 | Auto-protocol detection disabled |
í S52=1 | Auto-protocol detection enabled |
CALLER LINE ID | |
Type: | Register |
Format | AT [cmds] S50=n [cmds] |
Description: | Enables/disables mechanism for identifying the two endpoints of a connection |
Command | Function |
S50=0 | CLI feature disabled |
í S50=1 | CLI feature enabled |
CARRIER LOSS RESPONSE TIME | |
Type: | Register |
Format | AT [cmds] S10=n [cmds] |
Range: | 0-255 |
Unit: | .05 second |
Description: | Maximum time allowed by the modem after losing the carrier signal and prior to initiating hang-up process. |
ESCAPE SEQUENCE | |
Type: | Register |
Format: | AT [cmds] S32=n [cmds] |
Range: | 0-255 |
Unit: | .1sec |
Description: | Maximum time allowed by the modem in an escape sequence |
MAXIMUM FRAME SIZE | |
Type: | Register |
Format: | AT [cmds] S53=n [cmds] |
Range: | 0-2048 |
Unit: | ASCII |
Description: | Sets the maximum frame size of data frames in X.75 mode |
NO CARRIER TIME-OUT | |
Type: | Register |
Format | AT [cmds] S7=n [cmds] |
Range: | 0-255 |
Unit: | 1 second |
Description: | Maximum wait time the modem uses after dialing to detect a carrier signal from the remote modem for both originating and answering calls. Default=45 |