(TXT) View Source
# MICROCOM, INC.
QX/4232BIS+
Card Type Modem (synchronous/asynchronous)
Processor Z80
Processor Speed 10MHz
Maximum Onboard Memory 64KB DRAM
Maximum Data Rate 14.4Kbps
Data Bus Serial
Data Modulation Bell 103A/212A
ITU-T V.21, V.22, V.23, V.22bis, V.32,
V.32bis
Error MNP5, MNP10, V.42, V.42bis
Correction/Compression
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|------------------+-------+-------------------------+-------|
| Line out | CN1 | Volume control | R1 |
|------------------+-------+-------------------------+-------|
| Line in | CN2 | Talk/Data switch | SW4 |
|------------------+-------+-------------------------+-------|
| AC power in | CN3 | Originate/Answer switch | SW5 |
|------------------+-------+-------------------------+-------|
| RS232/422 port | CN4 | Reset switch | SW6 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Setting | Label | Position |
|----------------------------------------+-------+-----------|
| Minimum receive signal level set to | JP4 | Pins 1 & |
| -43 dBm | | 2 closed |
|----------------------------------------+-------+-----------|
| Minimum receive signal level set to | JP4 | Pins 2 & |
| -33 dBm | | 3 closed |
|----------------------------------------+-------+-----------|
| í Factory configured - do not alter | JP8/A | Closed |
|----------------------------------------+-------+-----------|
| í Factory configured - do not alter | JP8/B | Open |
|----------------------------------------+-------+-----------|
| í Factory configured - do not alter | JP8/C | Open |
|----------------------------------------+-------+-----------|
| í Factory configured - do not alter | JP9/A | Closed |
|----------------------------------------+-------+-----------|
| í Factory configured - do not alter | JP9/B | Open |
|----------------------------------------+-------+-----------|
| í Factory configured - do not alter | JP9/C | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS (CON’T) |
|------------------------------------------------------------|
| Setting | Label | Position |
|---------------------------------------+--------+-----------|
| Pin 1 of serial port connected to | JP10 | Pins 2 & |
| signal ground | | 3 closed |
|---------------------------------------+--------+-----------|
| Pin 1 of serial port connected to | JP10 | Pins 1 & |
| chassis ground | | 2 closed |
|---------------------------------------+--------+-----------|
| Pin 18 has no function | JP11/A | Open |
|---------------------------------------+--------+-----------|
| Modem performs local analog loopback | JP11/A | Closed |
| test when pin 18 goes high | | |
|---------------------------------------+--------+-----------|
| í Factory configured - do not alter | SW3/7 | On |
| (for North America) | | |
|---------------------------------------+--------+-----------|
| í Factory configured - do not alter | SW3/8 | On |
| (for North America) | | |
|------------------------------------------------------------|
| Note: If pin 18 is enabled, busy out must be |
| disabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LINE TYPE SELECTION |
|------------------------------------------------------------|
| Setting | JP1/A | JP1/B | JP1/C |
|------------------------+-----------+-----------+-----------|
| Leased line (0 dBm) | Open | Open | Closed |
|------------------------+-----------+-----------+-----------|
| Permissive (-10 dBm) | Closed | Open | Open |
|------------------------+-----------+-----------+-----------|
| Programmable (-12 dBm) | Open | Closed | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BUSY OUT SELECTION |
|------------------------------------------------------------|
| Setting | JP11/B | JP11/C |
|--------------------------+----------------+----------------|
| Busy out enabled | Closed | Open |
|--------------------------+----------------+----------------|
| Busy out disabled | Open | Closed |
|------------------------------------------------------------|
| Note: If busy out is enabled, pin 18 must be |
| disabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LEASED LINE TRANSMISSION LEVEL SELECTION |
|------------------------------------------------------------|
| Setting | SW3/1 | SW3/2 | SW3/3 |
|---------------+--------------+--------------+--------------|
| -2 dBm | On | On | On |
|---------------+--------------+--------------+--------------|
| -4 dBm | Off | On | On |
|---------------+--------------+--------------+--------------|
| -6 dBm | On | Off | On |
|---------------+--------------+--------------+--------------|
| -8 dBm | Off | Off | On |
|---------------+--------------+--------------+--------------|
| -10 dBm | On | On | Off |
|---------------+--------------+--------------+--------------|
| -12 dBm | Off | On | Off |
|---------------+--------------+--------------+--------------|
| -14 dBm | On | Off | Off |
|---------------+--------------+--------------+--------------|
| -16 dBm | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SWITCHED LINE TRANSMISSION LEVEL SELECTION |
|------------------------------------------------------------|
| Setting | SW3/4 | SW3/5 | SW3/6 |
|---------------+---------------+--------------+-------------|
| -2 dBm | On | On | On |
|---------------+---------------+--------------+-------------|
| -4 dBm | Off | On | On |
|---------------+---------------+--------------+-------------|
| -6 dBm | On | Off | On |
|---------------+---------------+--------------+-------------|
| -8 dBm | Off | Off | On |
|---------------+---------------+--------------+-------------|
| -10 dBm | On | On | Off |
|---------------+---------------+--------------+-------------|
| -12 dBm | Off | On | Off |
|---------------+---------------+--------------+-------------|
| -14 dBm | On | Off | Off |
|---------------+---------------+--------------+-------------|
| -16 dBm | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONFIGURATION MODE FUNCTION |
|------------------------------------------------------------|
| Mode | Function |
|-------+----------------------------------------------------|
| 0 | Normal operation of modem - sets power-up defaults |
| | for various commands |
|-------+----------------------------------------------------|
| 1 | Sets user profile that will be loaded at power-up |
|-------+----------------------------------------------------|
| 2 | Performs diagnostic tests |
|-------+----------------------------------------------------|
| 3 | Modifies factory default settings loaded by &F |
| | command |
|-------+----------------------------------------------------|
| 4 | Sets power-up defaults for V.25bis synchronous and |
| | dumb synchronous modes |
|------------------------------------------------------------|
| Note: The QX/4232bis+ modem can be configured by |
| switches in five modes, although command |
| configuration is preferable when possible. |
| Configuration modes 1, 3, and 4 can be stored in |
| NVRAM by pressing the reset switch. Mode 0 is read on |
| reset or power-up. Before operating, the modem’s |
| switches should be returned to mode 0 and the |
| appropriate settings made. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONFIGURATION MODE SELECTION |
|------------------------------------------------------------|
|Mode |Command Set|Async/Sync| SW1/1 |SW1/2 |SW1/3 |SW1/9 |
|-----+-----------+----------+----------+------+------+------|
| 0 | AT | Async |See mode 0| Off | On | On |
|-----+-----------+----------+----------+------+------+------|
| 0 | V.25bis | Async |See mode 0| On | On | On |
|-----+-----------+----------+----------+------+------+------|
| 1 | N/A | N/A | Off | Off | Off | On |
|-----+-----------+----------+----------+------+------+------|
| 2 | N/A | Async |See mode 2| On | Off | On |
|-----+-----------+----------+----------+------+------+------|
| 2 | N/A | Sync |See mode 2| On | Off | Off |
|-----+-----------+----------+----------+------+------+------|
| 3 | N/A | N/A | On | Off | Off | On |
|-----+-----------+----------+----------+------+------+------|
| 4 | V.25bis | Sync |See mode 4| On | On | Off |
|-----+-----------+----------+----------+------+------+------|
| 4 | None | Sync |See mode 4| Off | On | Off |
+------------------------------------------------------------+
Configuration Mode 0 - Normal Operation
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Setting | Label | Position |
|----------------------------------------+--------+----------|
| í Modem goes to command mode and | SW1/1 | On |
| disconnects on low DTR | | |
|----------------------------------------+--------+----------|
| Modem ignores DTR | SW1/1 | Off |
|----------------------------------------+--------+----------|
| í Command echo enabled | SW1/4 | On |
|----------------------------------------+--------+----------|
| Command echo disabled | SW1/4 | Off |
|----------------------------------------+--------+----------|
| í Auto-answer on one ring | SW1/5 | On |
|----------------------------------------+--------+----------|
| Auto-answer disabled | SW1/5 | Off |
|----------------------------------------+--------+----------|
| í Command sets enabled | SW1/8 | Off |
|----------------------------------------+--------+----------|
| Command sets disabled | SW1/8 | On |
|----------------------------------------+--------+----------|
| í Originate/Answer button determines | SW1/10 | On |
| mode | | |
|----------------------------------------+--------+----------|
| Force answer mode | SW1/10 | Off |
|----------------------------------------+--------+----------|
| í Error correction result codes | SW2/5 | Off |
| enabled | | |
|----------------------------------------+--------+----------|
| Extended result codes disabled | SW2/5 | On |
|----------------------------------------+--------+----------|
| í User profile loaded on reset and | SW2/6 | On |
| power up | | |
|----------------------------------------+--------+----------|
| Factory profile loaded on reset and | SW2/6 | Off |
| power up | | |
|----------------------------------------+--------+----------|
| í Switch configuration enabled | SW2/7 | Off |
|----------------------------------------+--------+----------|
| Switch configuration disabled | SW2/7 | On |
|----------------------------------------+--------+----------|
| í Serial port speed locked | SW2/8 | Off |
|----------------------------------------+--------+----------|
| Serial port speed follows connect | SW2/8 | On |
| speed | | |
|------------------------------------------------------------|
| Note: SW2/8 has no function in V.25bis mode. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CD, CTS, AND DSR SIGNAL CONFIGURATION |
|------------------------------------------------------------|
| Setting | SW1/6 | SW1/7 |
|--------------------------------------------+-------+-------|
| CD, CTS, and DSR forced high | On | On |
|--------------------------------------------+-------+-------|
| CD normal, CTS follows CD, DSR follows OH | On | Off |
|--------------------------------------------+-------+-------|
| CD, CTS, and DSR forced high except at | Off | On |
| disconnect | | |
|--------------------------------------------+-------+-------|
| í CD normal, CTS and DSR forced high | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL SELECTION |
|------------------------------------------------------------|
| Setting | SW2/1 | SW2/2 |
|--------------------------------------------+-------+-------|
| Flow control disabled | On | On |
|--------------------------------------------+-------+-------|
| Bidirectional XON/XOFF flow control | On | Off |
| enabled | | |
|--------------------------------------------+-------+-------|
| í Bidirectional RTS/CTS flow control | Off | On |
| enabled | | |
|--------------------------------------------+-------+-------|
| CTS flow control by DCE enabled | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONNECT MODE SELECTION |
|------------------------------------------------------------|
| Setting | SW2/3 | SW2/4 |
|-------------------------------+--------------+-------------|
| Normal mode enabled | On | On |
|-------------------------------+--------------+-------------|
| MNP reliable mode enabled | On | Off |
|-------------------------------+--------------+-------------|
| í Auto-reliable mode enabled | Off | On |
|-------------------------------+--------------+-------------|
| LAPM or MNP reliable mode | Off | Off |
+------------------------------------------------------------+
Configuration Mode 1 - User Profile
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Setting | Label | Position |
|----------------------------------------+--------+----------|
| í Factory configured - do not alter | SW1/6 | N/A |
|----------------------------------------+--------+----------|
| í Factory configured - do not alter | SW1/7 | N/A |
|----------------------------------------+--------+----------|
| í Factory configured - do not alter | SW1/8 | N/A |
|----------------------------------------+--------+----------|
| í Originate/Answer button determines | SW1/10 | On |
| mode | | |
|----------------------------------------+--------+----------|
| Force answer mode | SW1/10 | Off |
|----------------------------------------+--------+----------|
| í Factory configured - do not alter | SW2/1 | N/A |
|----------------------------------------+--------+----------|
| í Factory configured - do not alter | SW2/2 | N/A |
|----------------------------------------+--------+----------|
| í Factory configured - do not alter | SW2/3 | N/A |
|----------------------------------------+--------+----------|
| í Factory configured - do not alter | SW2/4 | N/A |
|----------------------------------------+--------+----------|
| í Factory configured - do not alter | SW2/5 | N/A |
|----------------------------------------+--------+----------|
| í Factory configured - do not alter | SW2/6 | N/A |
|----------------------------------------+--------+----------|
| í Factory configured - do not alter | SW2/7 | N/A |
|----------------------------------------+--------+----------|
| í Factory configured - do not alter | SW2/8 | N/A |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER PROFILE SELECTION |
|------------------------------------------------------------|
| Setting | SW1/4 | SW1/5 |
|-----------------------------+--------------+---------------|
| User profile 0 | On | On |
|-----------------------------+--------------+---------------|
| User profile 1 | On | Off |
|-----------------------------+--------------+---------------|
| User profile 2 | Off | On |
|-----------------------------+--------------+---------------|
| User profile 3 | Off | Off |
+------------------------------------------------------------+
Configuration Mode 2 - Diagnostic Testing
+------------------------------------------------------------+
| TOGGLE SWITCHES |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|------------------------------------------------------------|
| Start or stop test in | SW1/1 | Start or | SW4 |
| progress | | stop test | |
| | | in | |
| | | progress | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Setting | Label | Position |
|---------------------------------------+--------+-----------|
| Modem will perform local digital | SW1/4 | Off |
| loopback test | | |
|---------------------------------------+--------+-----------|
| Modem will not perform local digital | SW1/4 | On |
| loopback test | | |
|---------------------------------------+--------+-----------|
| Modem will perform local analog | SW1/5 | Off |
| loopback test | | |
|---------------------------------------+--------+-----------|
| Modem will not perform local analog | SW1/5 | On |
| loopback test | | |
|---------------------------------------+--------+-----------|
| SW1/5 performs local analog loopback | SW1/6 | Off |
| with self-test | | |
|---------------------------------------+--------+-----------|
| SW1/5 performs local analog loopback | SW1/6 | On |
| test | | |
|---------------------------------------+--------+-----------|
| í Factory configured - do not alter | SW1/7 | N/A |
|---------------------------------------+--------+-----------|
| í Factory configured - do not alter | SW1/8 | N/A |
|---------------------------------------+--------+-----------|
| í Factory configured - do not alter | SW1/10 | N/A |
|---------------------------------------+--------+-----------|
| í Factory configured - do not alter | SW2/1 | N/A |
|---------------------------------------+--------+-----------|
| í Factory configured - do not alter | SW2/2 | N/A |
|---------------------------------------+--------+-----------|
| í Factory configured - do not alter | SW2/3 | N/A |
|---------------------------------------+--------+-----------|
| í Factory configured - do not alter | SW2/4 | N/A |
|---------------------------------------+--------+-----------|
| í Factory configured - do not alter | SW2/5 | N/A |
|---------------------------------------+--------+-----------|
| í Factory configured - do not alter | SW2/6 | N/A |
|---------------------------------------+--------+-----------|
| í Factory configured - do not alter | SW2/7 | N/A |
|---------------------------------------+--------+-----------|
| í Factory configured - do not alter | SW2/8 | N/A |
|------------------------------------------------------------|
| Note: The modem will conduct tests in synchronous or |
| asynchronous mode according to where SW1/9 was set |
| the last time it was reset. |
+------------------------------------------------------------+
Configuration Mode 3 - Factory Default Modification
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Setting | Label | Position |
|----------------------------------------+--------+----------|
| Verbose result codes enabled | SW1/6 | On |
|----------------------------------------+--------+----------|
| Numeric result codes enabled | SW1/6 | Off |
|----------------------------------------+--------+----------|
| Pins 18 and 21 have no function | SW1/7 | On |
|----------------------------------------+--------+----------|
| Perform local analog loopback test | SW1/7 | Off |
| when pin 18 is high, remote digital | | |
| loopback test when pin 21 is high | | |
|----------------------------------------+--------+----------|
| \K set to 0 | SW1/8 | Off |
|----------------------------------------+--------+----------|
| \K set to 5 | SW1/8 | On |
|----------------------------------------+--------+----------|
| Originate/Answer button determines | SW1/10 | On |
| mode | | |
|----------------------------------------+--------+----------|
| Force answer mode | SW1/10 | Off |
|----------------------------------------+--------+----------|
| Inactivity timer disabled | SW2/1 | On |
|----------------------------------------+--------+----------|
| Inactivity timer set to 15 minutes | SW2/1 | Off |
|----------------------------------------+--------+----------|
| Modem-to-modem flow control disabled | SW2/2 | On |
|----------------------------------------+--------+----------|
| Modem-to-modem flow control enabled | SW2/2 | Off |
|----------------------------------------+--------+----------|
| Parity checking of flow control and | SW2/3 | On |
| escape characters disabled | | |
|----------------------------------------+--------+----------|
| Flow control and escape characters | SW2/3 | Off |
| will be processed only if their parity | | |
| matches serial port | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| RESULT CODE CONFIGURATION |
|------------------------------------------------------------|
| Setting | SW1/4 | SW1/5 |
|----------------------------------------+---------+---------|
| Result codes enabled | On | On |
|----------------------------------------+---------+---------|
| Result codes disabled | On | Off |
|----------------------------------------+---------+---------|
| Result codes enabled on originate only | Off | N/A |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARITY SELECTION |
|------------------------------------------------------------|
| Setting | SW2/4 | SW2/5 | SW2/6 |
|------------------------------------+-------+-------+-------|
| Modem will use eight data bits, no | On | On | On |
| parity | | | |
|------------------------------------+-------+-------+-------|
| Modem will use seven data bits, | On | On | Off |
| odd parity | | | |
|------------------------------------+-------+-------+-------|
| Modem will use seven data bits, | On | Off | On |
| even parity | | | |
|------------------------------------+-------+-------+-------|
| Modem will use seven data bits, | On | Off | Off |
| MARK parity | | | |
|------------------------------------+-------+-------+-------|
| Modem will use seven data bits, | Off | On | On |
| SPACE parity | | | |
|------------------------------------+-------+-------+-------|
| Modem will use eight data bits, | Off | On | Off |
| odd parity | | | |
|------------------------------------+-------+-------+-------|
| Modem will use eight data bits, | Off | Off | On |
| even parity | | | |
|------------------------------------+-------+-------+-------|
| Modem will use eight data bits, | Off | Off | Off |
| MARK parity | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SPEED SELECTION |
|------------------------------------------------------------|
| Setting | SW2/7 | SW2/8 |
|--------------------------------------------+-------+-------|
| Serial port speed set to 38.4Kbps; line | On | On |
| speed set to 14.4Kbps | | |
|--------------------------------------------+-------+-------|
| Serial port speed set to 19.2Kbps; line | On | Off |
| speed set to 14.4Kbps | | |
|--------------------------------------------+-------+-------|
| Serial port and line speeds set to 9600bps | Off | On |
|--------------------------------------------+-------+-------|
| Serial port speed set to 57.6Kbps; line | Off | Off |
| speed set to 14.4Kbps | | |
+------------------------------------------------------------+
Configuration Mode 4 - Synchronous Mode
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Setting | Label | Position |
|----------------------------------------+--------+----------|
| Modem goes to command mode and | SW1/1 | On |
| disconnects on low-to-high DTR | | |
| transition | | |
|----------------------------------------+--------+----------|
| Modem ignores DTR | SW1/1 | Off |
|----------------------------------------+--------+----------|
| Originate/Answer button determines | SW1/10 | On |
| mode | | |
|----------------------------------------+--------+----------|
| Force answer mode | SW1/10 | Off |
|----------------------------------------+--------+----------|
| Pins 18 and 21 have no function | SW2/3 | On |
|----------------------------------------+--------+----------|
| Perform local analog loopback test | SW2/3 | Off |
| when pin 18 is high, remote digital | | |
| loopback test when pin 21 is high | | |
|----------------------------------------+--------+----------|
| Auto-answer on one ring | SW2/7 | Off |
|----------------------------------------+--------+----------|
| Auto-answer disabled | SW2/7 | On |
|----------------------------------------+--------+----------|
| Modem will match connect speeds. | SW2/8 | On |
|----------------------------------------+--------+----------|
| Modem will connect only at current | SW2/8 | Off |
| speed. | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| STORED NUMBER SELECTION |
|------------------------------------------------------------|
| Setting | SW1/4 | SW1/5 |
|--------------------------------------------+-------+-------|
| Manual dial only | On | On |
|--------------------------------------------+-------+-------|
| Dial first stored number when Talk/Data | On | Off |
| switch is pressed | | |
|--------------------------------------------+-------+-------|
| Dial second stored number when Talk/Data | Off | On |
| switch is pressed | | |
|--------------------------------------------+-------+-------|
| Dial third stored number when Talk/Data | Off | Off |
| switch is pressed | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LINE TYPE SELECTION |
|------------------------------------------------------------|
| Setting | SW1/6 | SW1/7 | SW1/8 |
|------------------------------------+-------+-------+-------|
| Modem is connected to switched | On | On | On |
| line | | | |
|------------------------------------+-------+-------+-------|
| Modem is connected to 2-wire | Off | On | On |
| leased line | | | |
|------------------------------------+-------+-------+-------|
| Modem is connected to 4-wire | Off | Off | On |
| leased line | | | |
|------------------------------------+-------+-------+-------|
| Modem is connected to 2-wire | On | Off | On |
| leased line. After 6 seconds of | | | |
| receiving no input, the modem goes | | | |
| off-hook and attempts to connect. | | | |
|------------------------------------+-------+-------+-------|
| Modem is connected to 4-wire | On | On | Off |
| leased line. After 6 seconds of | | | |
| receiving no input, the modem goes | | | |
| off-hook and attempts to connect. | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONNECT SPEED SELECTION |
|------------------------------------------------------------|
| Setting | SW2/1 | SW2/2 |
|--------------------------------+-------------+-------------|
| Modem will connect at 14.4Kbps | On | On |
|--------------------------------+-------------+-------------|
| Modem will connect at 9600bps | On | Off |
|--------------------------------+-------------+-------------|
| Modem will connect at 4800bps | Off | On |
|--------------------------------+-------------+-------------|
| Modem will connect at 2400bps | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CD, CTS, DSR, AND RTS SIGNAL CONFIGURATION |
|------------------------------------------------------------|
| Setting | SW2/4 | SW2/5 | SW2/6 |
|------------------------------------+-------+-------+-------|
| CD, CTS, and DSR forced high | On | On | On |
|------------------------------------+-------+-------+-------|
| CD, CTS, and DSR normal | On | On | Off |
|------------------------------------+-------+-------+-------|
| CD, CTS, and DSR forced high | On | Off | On |
| except at disconnect | | | |
|------------------------------------+-------+-------+-------|
| CD normal, CTS and DSR forced high | On | Off | Off |
|------------------------------------+-------+-------+-------|
| CD, CTS, and DSR normal | Off | On | On |
|------------------------------------+-------+-------+-------|
| CD normal, CTS follows RTS, DSR | Off | On | Off |
| forced high | | | |
|------------------------------------+-------+-------+-------|
| CD and CTS use ITU-T V.13 to | Off | Off | On |
| simulate half-duplex modes, DSR | | | |
| normal | | | |
|------------------------------------+-------+-------+-------|
| CD and CTS use ITU-T V.13 to | Off | Off | Off |
| simulate half-duplex modes, DSR | | | |
| forced high | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAGNOSTIC LED(S) (POWER-UP) |
|------------------------------------------------------------|
| TST | OH | HS | Condition |
|--------+--------+----------+-------------------------------|
| On | Off | Off | Firmware checksum incorrect |
|--------+--------+----------+-------------------------------|
| On | Off | Red | RAM test failed |
|--------+--------+----------+-------------------------------|
| On | Off | Green | Modem failed |
|--------+--------+----------+-------------------------------|
| On | On | N/A | Modem failed |
|--------+--------+----------+-------------------------------|
| Off | Off | Off | All tests passed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAGNOSTIC LED(S) (NORMAL OPERATION) |
|------------------------------------------------------------|
| 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 connected at, or |
| | | | serial port speed is set |
| | | | to, 300bps |
|-----+--------------+----------+----------------------------|
| HS | Red | 1 blink | Modem is connected at, or |
| | | | serial port speed is set |
| | | | to, 600bps |
|-----+--------------+----------+----------------------------|
| HS | Red | 2 blinks | Modem is connected at, or |
| | | | serial port speed is set |
| | | | to, 1200bps |
|-----+--------------+----------+----------------------------|
| HS | Red | 3 blinks | Modem is connected at, or |
| | | | serial port speed is set |
| | | | to, 2400bps |
|-----+--------------+----------+----------------------------|
| HS | Green | On | Modem is connected at, or |
| | | | serial port speed is set |
| | | | to, 4800bps |
|-----+--------------+----------+----------------------------|
| HS | Green | 1 blink | Modem is connected at, or |
| | | | serial port speed is set |
| | | | to, 7200bps |
|-----+--------------+----------+----------------------------|
| HS | Green | 2 blinks | Modem is connected at, or |
| | | | serial port speed is set |
| | | | to, 9600bps |
|-----+--------------+----------+----------------------------|
| HS | Green | 3 blinks | Modem is connected at, or |
| | | | serial port speed is set |
| | | | to, 12Kbps |
|-----+--------------+----------+----------------------------|
| HS | Green | 4 blinks | Modem is connected at, or |
| | | | serial port speed is set |
| | | | to, 14.4Kbps |
|-----+--------------+----------+----------------------------|
| HS | N/A | Off | Modem is connected at, or |
| | | | serial port speed is set |
| | | | to, 75bps |
|-----+--------------+----------+----------------------------|
| DTR | Unidentified | On | DTR signal is high |
|-----+--------------+----------+----------------------------|
| DTR | Unidentified | Off | DTR signal is low |
|-----+--------------+----------+----------------------------|
| TXD | Unidentified | Blinking | Modem is transmitting data |
|-----+--------------+----------+----------------------------|
| TXD | Unidentified | Off | Modem is not transmitting |
| | | | data |
|-----+--------------+----------+----------------------------|
| RXD | Unidentified | Blinking | Modem is receiving data |
|-----+--------------+----------+----------------------------|
| RXD | Unidentified | Off | Modem is not receiving |
| | | | data |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SUPPORTED STANDARD COMMANDS |
|------------------------------------------------------------|
| Basic AT Commands |
|------------------------------------------------------------|
| +++, ‘comma’, A/ |
|------------------------------------------------------------|
| A, B, E, H, I, L, M, O, P, Q, T, V, W, X, Y, Z |
|------------------------------------------------------------|
| &D, &F, &G, &M, &P, &T, &W, &X, &Y, &Z |
|------------------------------------------------------------|
| Extended AT Commands |
|------------------------------------------------------------|
| \A, \B, \C, \E, \J, \N, \Q, \T |
|------------------------------------------------------------|
| %A, %C, %E, %F, %G |
|------------------------------------------------------------|
| Special AT Commands |
|------------------------------------------------------------|
| -J, *H, )M, @M, :E |
|------------------------------------------------------------|
| S-Registers |
|------------------------------------------------------------|
| S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S12, S14, |
| S16, S18, S22, S23, S25, S26, S27 |
|------------------------------------------------------------|
| Note: See MHI documentation for complete information. |
+------------------------------------------------------------+
Proprietary AT Command Set
+------------------------------------------------------------+
| COMMAND SET - V.25bis |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | [cmds] \M |
|--------------+---------------------------------------------|
| Description: | Enables the V.25bis command set. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DISPLAY SWITCH SETTINGS |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Sn [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays the modem’s switch settings. |
|------------------------------------------------------------|
| Command | Function |
|-----------------+------------------------------------------|
| %S0 | Display settings of SW1/1-SW1/10. |
|-----------------+------------------------------------------|
| %S1 | Display settings of SW2/1-SW2/8. |
|-----------------+------------------------------------------|
| %S2 | Display settings of SW3/1-SW3/8. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LEASED LINE CALL RESTORAL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] )Pn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects whether the modem will attempt to |
| | reconnect with a dial backup call to a |
| | leased line MNP reliable mode connection |
| | that has terminated abnormally. If the dial |
| | backup reconnects successfully, the call |
| | will proceed as if it had not disconnected. |
|------------------------------------------------------------|
| Command | Function |
|------------------+-----------------------------------------|
| )P0 | Leased line call restoral disabled. |
|------------------+-----------------------------------------|
| í )P1 | Leased line call restoral enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LEASED LINE COMPROMISE EQUALIZER |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] )En [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects whether the compromise equalizer |
| | will be used for leased line V.32 and |
| | V.32bis connections. |
|------------------------------------------------------------|
| Command | Function |
|-------------------+----------------------------------------|
| í )E0 | Compromise equalizer disabled. |
|-------------------+----------------------------------------|
| )E1 | Compromise equalizer enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LEASED LINE DIAL BACKUP |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] :Nn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects whether the modem will attempt to |
| | connect to the first stored number with a |
| | switched line connection if the leased line |
| | connection fails. |
|------------------------------------------------------------|
| Command | Function |
|-------------------------+----------------------------------|
| :N0 | Dial backup disabled. |
|-------------------------+----------------------------------|
| í :N1 | Dial backup enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LEASED LINE DIAL BACKUP IN ANSWER MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] )Cn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects whether the modem is allowed to |
| | execute a dial backup if it is in answer |
| | mode. |
|------------------------------------------------------------|
| Command | Function |
|----------------+-------------------------------------------|
| )C0 | Dial backup disabled in answer mode. |
|----------------+-------------------------------------------|
| í )C1 | Dial backup enabled in answer mode. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LEASED LINE MAXIMUM RETRAIN COUNTER |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] :Gn [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets the number of times the modem is |
| | allowed to retrain in the time specified by |
| | the :H command before it attempts a dial |
| | backup connection. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LEASED LINE MAXIMUM RETRAIN TIME |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] :Hn [cmds] |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0 - 255 |
|--------------+---------------------------------------------|
| Unit: | 1 minute |
|--------------+---------------------------------------------|
| Description: | Sets the amount of time in which the modem |
| | is allowed to retrain the number of times |
| | specified by the :G command before it |
| | attempts a dial backup connection. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LEASED LINE ORIGINATE MODE TIMER |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Vn [cmds] |
|--------------+---------------------------------------------|
| Default: | 5 |
|--------------+---------------------------------------------|
| Range: | 0 - 90 |
|--------------+---------------------------------------------|
| Unit: | 1 minute |
|--------------+---------------------------------------------|
| Description: | Sets the amount of time that the |
| | originating modem waits for an answer |
| | before attempting a dial backup. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LEASED LINE QUALITY |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] )F [cmds] |
|--------------+---------------------------------------------|
| Default: | N/A |
|--------------+---------------------------------------------|
| Range: | 0 - 65535 |
|--------------+---------------------------------------------|
| Unit: | N/A |
|--------------+---------------------------------------------|
| Description: | Displays the poorest quality of the phone |
| | line this connection. Higher numbers |
| | indicate a poorer connection. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LEASED LINE QUALITY CLEAR |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] :Y [cmds] |
|--------------+---------------------------------------------|
| Description: | Clears the line quality value reported by |
| | )F so that the current line quality may be |
| | monitored. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LEASED LINE RESTORAL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] )Ln [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects whether the modem will attempt to |
| | restore a leased line connection while |
| | connected with a dial backup connection. |
|------------------------------------------------------------|
| Command | Function |
|---------------+--------------------------------------------|
| )L0 | Modem will not attempt to restore leased |
| | line connection. |
|---------------+--------------------------------------------|
| í )L1 | Modem will attempt to restore leased line |
| | connection. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LEASED LINE RESTORAL CARRIER TIMER |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] )Wn [cmds] |
|--------------+---------------------------------------------|
| Default: | 20 |
|--------------+---------------------------------------------|
| Range: | 0 - 255 |
|--------------+---------------------------------------------|
| Unit: | 1 second |
|--------------+---------------------------------------------|
| Description: | Sets the amount of time that the modem |
| | waits for a carrier after attempting to |
| | restore a leased line connection. If this |
| | time expires the modem will begin a dial |
| | backup again. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LEASED LINE RESTORAL DELAY |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] )Xn [cmds] |
|--------------+---------------------------------------------|
| Default: | 60 |
|--------------+---------------------------------------------|
| Range: | 0 - 60 |
|--------------+---------------------------------------------|
| Unit: | 1 minute |
|--------------+---------------------------------------------|
| Description: | Sets the amount of time that the modem |
| | waits after a successful dial backup to |
| | check the leased line to see if service has |
| | been re-established. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LEASED LINE RESTORAL RETRY DELAY |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] )Yn [cmds] |
|--------------+---------------------------------------------|
| Default: | 40 |
|--------------+---------------------------------------------|
| Range: | 0 - 255 |
|--------------+---------------------------------------------|
| Unit: | 1 second |
|--------------+---------------------------------------------|
| Description: | Sets the amount of time after a failed |
| | attempt to re-connect to the leased line, |
| | and while it is performing a dial backup, |
| | that the modem watches for a carrier on the |
| | leased line. If no carrier is detected |
| | within this time the modem proceeds with |
| | the dial backup. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LEASED LINE RESTORE |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] )B [cmds] |
|--------------+---------------------------------------------|
| Description: | Initiates a leased line restoral. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LINE TYPE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Ln [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects what type of line the modem is |
| | connected to and whether it will attempt to |
| | automatically re-connect. |
|------------------------------------------------------------|
| Command | Function |
|----------------+-------------------------------------------|
| í &L0 | Modem is connected to switched line. |
|----------------+-------------------------------------------|
| &L1 | Modem is connected to 2-wire leased line. |
|----------------+-------------------------------------------|
| &L2 | Modem is connected to 4-wire leased line. |
|----------------+-------------------------------------------|
| &L3 | Modem is connected to 2-wire leased line. |
| | After 6 seconds of receiving no input, |
| | the modem goes off-hook and attempts to |
| | connect. |
|----------------+-------------------------------------------|
| &L4 | Modem is connected to 4-wire leased line. |
| | After 6 seconds of receiving no input, |
| | the modem goes off-hook and attempts to |
| | connect. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| OPERATING MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] $Sn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects whether the modem will operate in |
| | asynchronous or synchronous mode. |
|------------------------------------------------------------|
| Command | Function |
|-----------------------+------------------------------------|
| í $S0 | Determined by SW1/9. |
|-----------------------+------------------------------------|
| $S1 | Force asynchronous mode. |
|-----------------------+------------------------------------|
| $S2 | Force synchronous mode. |
+------------------------------------------------------------+
Proprietary V.25bis Command Set
+------------------------------------------------------------+
| COMMAND SET - AT |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | ATZ |
|--------------+---------------------------------------------|
| Description: | Enables the AT command set. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONNECTION SECURITY - PASSWORD SELECTION (ASYNCHRONOUS |
| MODE) |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | PSW |
|--------------+---------------------------------------------|
| Description: | Changes the connection password. The user |
| | will be prompted to enter the old and new |
| | passwords. Passwords must be exactly five |
| | characters, case insensitive. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONNECTION SECURITY - PASSWORD SELECTION (SYNCHRONOUS |
| MODE) |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | PSWxxxxx;yyyyy |
|--------------+---------------------------------------------|
| Description: | Changes the connection password. The xxxxx |
| | represents old connection password, and the |
| | yyyyy is the new connection password. |
| | Passwords must be exactly five characters, |
| | case insensitive. |
+------------------------------------------------------------+
See MICROCOM, INC. DESKPORTE FAST for a full command summary.