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# 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 V.110, V.120, X.75, ML-PPP, SoftBond
Protocol
Error Unidentified
Correction/Compression
Data Bus External
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|--------------------+-------+-----------------------+-------|
| Power connector | CN1 | Auxiliary interface | CN3 |
| | | (RJ-11 connector) | |
|--------------------+-------+-----------------------+-------|
| 25-pin serial port | CN2 | ISDN interface (RJ-45 | CN4 |
| | | connector) | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 | SPIDS have not been |
| | | (slow) | verifies with central |
| | | | office |
|-----+--------------+----------+----------------------------|
| LS | Unidentified | Blinking | One SPID has been verified |
| | | (fast) | 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 | Active analog connection |
| | | (slow) | on B-channel 1 |
|-----+--------------+----------+----------------------------|
| B1 | Unidentified | Blinking | Connection is being made |
| | | (fast) | |
|-----+--------------+----------+----------------------------|
| B1 | Unidentified | Off | B-channel 1 connection is |
| | | | broken |
|-----+--------------+----------+----------------------------|
| B2 | Unidentified | On | Active data connection on |
| | | | B-channel 2 |
|-----+--------------+----------+----------------------------|
| B2 | Unidentified | Blinking | Active analog connection |
| | | (slow) | on B-channel 2 |
|-----+--------------+----------+----------------------------|
| B2 | Unidentified | Blinking | Connection is being made |
| | | (fast) | |
|-----+--------------+----------+----------------------------|
| 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 |
+------------------------------------------------------------+