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# MICROCOM, INC.
AX/1200
Card Type Modem (synchronous/asynchronous)
Chipset Microcom, Inc.
Maximum Onboard Memory 8K battery-backup DRAM
Maximum Data Rate 1200bps
Data Bus Serial
Data Modulation Bell 103A/212A
ITU-T V.22
Error Correction/Compression MNP4
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|------------------------------------------------------------|
| Line out | CN1 | Volume | R1 |
|---------------+----------+---------------------------+-----|
| Line in | CN2 | Talk/data switch | SW3 |
|---------------+----------+---------------------------+-----|
| DC power | CN3 | Synchronous/asynchronous | SW4 |
| | | switch | |
|---------------+----------+---------------------------+-----|
| RS-232/422 | CN4 | Reset switch | SW5 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Setting | Label | Position |
|----------------------------------------+-------+-----------|
| í Busy out disabled | JP1 | Pins 3 & |
| | | 4 closed |
|----------------------------------------+-------+-----------|
| Busy out enabled | JP1 | Pins 1 & |
| | | 2 closed |
|----------------------------------------+-------+-----------|
| í Receiver sensitivity set to -10 to | JP2 | Pins 3 & |
| -43 dBm | | 4 closed |
|----------------------------------------+-------+-----------|
| Receiver sensitivity set to 0 to -33 | JP2 | Pins 1 & |
| dBm | | 2 closed |
|----------------------------------------+-------+-----------|
| í Pin 12 of RS-232 port indicates | JP3/A | Closed |
| 1200bps connection | | |
|----------------------------------------+-------+-----------|
| Pin 12 of RS-232 port does not | JP3/A | Open |
| indicate 1200bps connection | | |
|----------------------------------------+-------+-----------|
| í Synchronous transmit clock on RS-232 | JP3/B | Closed |
| pin 15 enabled | | |
|----------------------------------------+-------+-----------|
| Synchronous transmit clock on RS-232 | JP3/B | Open |
| pin 15 disabled | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS (CON’T) |
|------------------------------------------------------------|
| Setting | Label | Position |
|-----------------------------------------+-------+----------|
| í Pin 15 of RS-232 port does not | JP3/C | Open |
| indicate 1200bps connection | | |
|-----------------------------------------+-------+----------|
| Pin 15 of RS-232 port indicates 1200bps | JP3/C | Closed |
| connection | | |
|-----------------------------------------+-------+----------|
| í RTS signal in on RS-232 pin 15 | JP3/D | Open |
| disabled | | |
|-----------------------------------------+-------+----------|
| RTS signal in on RS-232 pin 15 enabled | JP3/D | Closed |
|-----------------------------------------+-------+----------|
| í Factory configured - do not alter | JP4 | N/A |
|-----------------------------------------+-------+----------|
| í DTR normal | SW1/1 | On |
|-----------------------------------------+-------+----------|
| DTR forced high | SW1/1 | Off |
|-----------------------------------------+-------+----------|
| í Microcom SX command set enabled | SW1/2 | On |
| (asynchronous mode only) | | |
|-----------------------------------------+-------+----------|
| AT command set enabled (asynchronous | SW1/2 | Off |
| mode only) | | |
|-----------------------------------------+-------+----------|
| í Result codes disabled (asynchronous | SW1/3 | On |
| mode only) | | |
|-----------------------------------------+-------+----------|
| Result codes enabled (asynchronous mode | SW1/3 | Off |
| only) | | |
|-----------------------------------------+-------+----------|
| í Command echo disabled (asynchronous | SW1/4 | Off |
| mode only) | | |
|-----------------------------------------+-------+----------|
| Command echo enabled (asynchronous mode | SW1/4 | On |
| only) | | |
|-----------------------------------------+-------+----------|
| í Auto-answer enabled (asynchronous | SW1/5 | On |
| mode only) | | |
|-----------------------------------------+-------+----------|
| Auto-answer disabled (asynchronous mode | SW1/5 | Off |
| only) | | |
|-----------------------------------------+-------+----------|
| í CD normal (asynchronous mode only) | SW1/6 | On |
|-----------------------------------------+-------+----------|
| CD forced high (asynchronous mode only) | SW1/6 | Off |
|-----------------------------------------+-------+----------|
| í Verbose result codes enabled | SW1/7 | On |
| (asynchronous mode only) | | |
|-----------------------------------------+-------+----------|
| Numeric result codes enabled | SW1/7 | Off |
| (asynchronous mode only) | | |
|-----------------------------------------+-------+----------|
| í Command sets disabled (asynchronous | SW1/8 | On |
| mode only) | | |
|-----------------------------------------+-------+----------|
| Command sets enabled (asynchronous mode | SW1/8 | Off |
| only) | | |
|-----------------------------------------+-------+----------|
| í MNP result codes disabled | SW2/5 | On |
| (asynchronous mode only) | | |
|-----------------------------------------+-------+----------|
| MNP result codes enabled (asynchronous | SW2/5 | Off |
| mode only) | | |
|-----------------------------------------+-------+----------|
| í Factory defaults not restored on | SW2/6 | On |
| reset (asynchronous AT command set | | |
| only) | | |
|-----------------------------------------+-------+----------|
| Factory defaults restored on reset | SW2/6 | Off |
| (asynchronous AT command set only) | | |
|-----------------------------------------+-------+----------|
| í Switched line type (synchronous mode | SW2/6 | On |
| only) | | |
|-----------------------------------------+-------+----------|
| Leased line type (synchronous mode | SW2/6 | Off |
| only) | | |
|-----------------------------------------+-------+----------|
| í Configuration not set to switch | SW2/7 | On |
| settings on reset (asynchronous mode | | |
| only) | | |
|-----------------------------------------+-------+----------|
| Configuration set to switch settings on | SW2/7 | Off |
| reset (asynchronous mode only) | | |
|-----------------------------------------+-------+----------|
| í Auto-answer disabled (synchronous | SW2/7 | On |
| mode only) | | |
|-----------------------------------------+-------+----------|
| Auto-answer enabled (synchronous mode | SW2/7 | Off |
| only) | | |
|-----------------------------------------+-------+----------|
| í Factory configured - do not alter | SW2/8 | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AUTO-DIAL NUMBER (SYNCHRONOUS MODE ONLY) |
|------------------------------------------------------------|
| Setting | SW1/4 | SW1/5 | SW1/6 | SW1/7 |
|---------------+-----------+----------+----------+----------|
| First number | Off | On | On | On |
|---------------+-----------+----------+----------+----------|
| Second number | On | Off | On | On |
|---------------+-----------+----------+----------+----------|
| Third number | On | On | Off | On |
|---------------+-----------+----------+----------+----------|
| Fourth number | On | On | On | Off |
|---------------+-----------+----------+----------+----------|
| Disabled | On | On | On | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL (ASYNCHRONOUS MODE ONLY) |
|------------------------------------------------------------|
| Modem to DTE | Modem to Modem | SW2/1 | SW2/2 |
|---------------+----------------+-------------+-------------|
| Disabled | Disabled | On | On |
|---------------+----------------+-------------+-------------|
| XON/XOFF | XON/XOFF | On | Off |
|---------------+----------------+-------------+-------------|
| RTS/CTS | XON/XOFF | Off | On |
|---------------+----------------+-------------+-------------|
| Disabled | Disabled | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONNECT MODE (ASYNCHRONOUS MODE ONLY) |
|------------------------------------------------------------|
| Setting | SW2/3 | SW2/4 |
|---------------------+-------------------+------------------|
| Normal mode | On | On |
|---------------------+-------------------+------------------|
| Direct mode | Off | Off |
|---------------------+-------------------+------------------|
| Reliable mode | On | Off |
|---------------------+-------------------+------------------|
| Auto-reliable mode | Off | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CD, DSR, AND CTS SIGNALS (SYNCHRONOUS MODE ONLY) |
|------------------------------------------------------------|
| CD Signal | DSR Signal | CTS Signal | SW2/4 | SW2/5 |
|--------------+--------------+--------------+-------+-------|
| Forced high | Forced high | Forced high | On | On |
|--------------+--------------+--------------+-------+-------|
| Normal | Follows OH | Normal | On | Off |
|--------------+--------------+--------------+-------+-------|
| High except | High except | High except | Off | On |
| at | at | at | | |
| disconnect | disconnect | disconnect | | |
|--------------+--------------+--------------+-------+-------|
| Normal | Forced high | Forced high | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAGNOSTIC LED(S) |
|------------------------------------------------------------|
| LED | Color | Status | Condition |
|-----+--------------+----------+----------------------------|
| PWR | Unidentified | On | Power is on |
|-----+--------------+----------+----------------------------|
| PWR | Unidentified | Off | Power is off |
|-----+--------------+----------+----------------------------|
| TST | Unidentified | On | System error has occurred |
| | | | or modem is retraining |
|-----+--------------+----------+----------------------------|
| TST | Unidentified | Blinking | Serial port is waiting to |
| | | | be configured |
|-----+--------------+----------+----------------------------|
| TST | Unidentified | One | Data error has occurred |
| | | blink | |
|-----+--------------+----------+----------------------------|
| TST | Unidentified | Off | Normal operation |
|-----+--------------+----------+----------------------------|
| OH | Unidentified | On | Modem is off-hook |
|-----+--------------+----------+----------------------------|
| OH | Unidentified | Off | Modem is on-hook |
|-----+--------------+----------+----------------------------|
| HS | Red | On | Modem is operating at |
| | | | 1200bps |
|-----+--------------+----------+----------------------------|
| HS | Red | Off | Modem is operating at |
| | | | 300bps |
|-----+--------------+----------+----------------------------|
| DTR | Unidentified | On | DTR signal is high |
|-----+--------------+----------+----------------------------|
| DTR | Unidentified | Off | DTR signal is low |
|-----+--------------+----------+----------------------------|
| TX | Unidentified | Blinking | Modem is transmitting data |
|-----+--------------+----------+----------------------------|
| TX | Unidentified | Off | Modem is not transmitting |
| | | | data |
|-----+--------------+----------+----------------------------|
| RX | Unidentified | Blinking | Modem is receiving data |
|-----+--------------+----------+----------------------------|
| RX | Unidentified | Off | Modem is not receiving |
| | | | data |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SUPPORTED STANDARD COMMANDS |
|------------------------------------------------------------|
| Basic AT Commands |
|------------------------------------------------------------|
| +++, ‘comma’, A/ |
|------------------------------------------------------------|
| A, B, E, H, I, M, O, P, Q, T, V, X, Z |
|------------------------------------------------------------|
| &D, &F, &G, &L, &M, &P, &R, &T, &W, &Z |
|------------------------------------------------------------|
| Extended AT Commands |
|------------------------------------------------------------|
| \A, \B, \C, \E, \G, \J, \L, \N, \O, \Q, \T, \U, \V, \X, |
| \Y, \Z |
|------------------------------------------------------------|
| %A, %E |
|------------------------------------------------------------|
| S-Registers |
|------------------------------------------------------------|
| S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S12, S14, |
| S16, S18, S21, S22, S23, S25, S26, S27 |
|------------------------------------------------------------|
| Note: See MHI documentation for complete information. |
+------------------------------------------------------------+
See MICROCOM, INC. AX/2400 for a full command summary.