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# MAXTECH CORPORATION
Card Type Modem(asynchronous)
Chip Set Unidentified
Maximum Data Rate 14.4Kbps
Maximum Fax Rate 14.4Kbps
Data Bus PCMCIA Type II
Fax Class Class I & II
Data Modulation Bell 103A/212A
Protocol
ITU-T V.21, V.22, V.22bis, V.23, V.32,
V.32bis
Fax Modulation ITU-T V.17, V.21CH2, V.27ter, V.29
Protocol
Error MNP10, V.42, V.42bis
Correction/Compression
Proprietary AT Command Set
V1794
+------------------------------------------------------------+
| AUTO-RETRAIN |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT %En |
|--------------+---------------------------------------------|
| Description: | Selects auto-retrain mode |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %E0 | Auto-retrain disabled |
|--------------+---------------------------------------------|
| í %E1 | Auto-retrain enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AUTOSCAN |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] Nn [cmds] |
|--------------+---------------------------------------------|
| Description: | Enables rate negotiation |
|------------------------------------------------------------|
| Command | Function |
|-------------------+----------------------------------------|
| N0 | Autoscan disabled |
|-------------------+----------------------------------------|
| í N1 | Autoscan enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S14 |
|------------------------------------------------------------|
| Format | AT [cmds] S14=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 138 |
|--------------+---------------------------------------------|
| Range: | 0 - 174 |
|--------------+---------------------------------------------|
| Unit: | Bit-mapped |
|--------------+---------------------------------------------|
| Description: | Controls command echo, result codes, |
| | dialing mode, and answer/originate mode |
|--------------+---------------------------------------------|
| Bit | Value | Function |
|------+-------+---------------------------------------------|
| 0 | 0 | Not used |
|------+-------+---------------------------------------------|
| 1 | 0 | Command echo off |
| | | |
| | í 1 | Command echo on |
|------+-------+---------------------------------------------|
| 2 | í 0 | Result codes enabled |
| | | |
| | 1 | Result codes disabled |
|------+-------+---------------------------------------------|
| 3 | 0 | Numeric result codes |
| | | |
| | í 1 | Verbose result codes |
|------+-------+---------------------------------------------|
| 4 | 0 | Not used |
|------+-------+---------------------------------------------|
| 5 | í 0 | Tone dialing selected |
| | | |
| | 1 | Pulse dialing selected |
|------+-------+---------------------------------------------|
| 6 | 0 | Not used |
|------+-------+---------------------------------------------|
| 7 | 0 | Answer mode selected |
| | | |
| | í 1 | Originate mode selected |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S21 |
|------------------------------------------------------------|
| Format | AT [cmds] S21=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 20 |
|--------------+---------------------------------------------|
| Range: | 0 - 252 |
|--------------+---------------------------------------------|
| Unit: | Bit-mapped |
|--------------+---------------------------------------------|
| Description: | Selects CTS signal, low DTR action, DCD |
| | signal, DSR signal, and long space |
| | disconnect |
|--------------+---------------------------------------------|
| Bit | Value | Function |
|------+-------+---------------------------------------------|
| 0 | 0 | Not used |
|------+-------+---------------------------------------------|
| 1 | 0 | Not used |
|------+-------+---------------------------------------------|
| 2 | 0 | CTS forced high |
| | | |
| | í 1 | CTS follows RTS |
|------+-------+---------------------------------------------|
| 4, 3 | 00 | DTR signal ignored |
| | | |
| | 01 | Modem goes to command mode on low DTR |
| | | |
| | í 10 | Modem disconnects and goes to command mode |
| | | on low DTR |
| | 11 | |
| | | Modem is initialized on low DTR |
|------+-------+---------------------------------------------|
| 5 | í 0 | DCD forced high |
| | | |
| | 1 | DCD normal |
|------+-------+---------------------------------------------|
| 6 | í 0 | DSR forced high |
| | | |
| | 1 | DSR normal |
|------+-------+---------------------------------------------|
| 7 | í 0 | Long Space Disconnect function disabled |
| | | |
| | 1 | Long Space Disconnect function enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S22 |
|------------------------------------------------------------|
| Format | AT [cmds] S22=n [cmds] |
|--------------+---------------------------------------------|
| Default: | Unidentified |
|--------------+---------------------------------------------|
| Range: | 0 - 127 |
|--------------+---------------------------------------------|
| Unit: | Bit-mapped |
|--------------+---------------------------------------------|
| Description: | Controls volume and speaker settings, |
| | result codes |
|--------------+---------------------------------------------|
| Bit | Value | Function |
|------+-------+---------------------------------------------|
| 1, 0 | 00 | Not used |
| | | |
| | í 01 | Low volume setting |
| | | |
| | 10 | Medium volume setting |
| | | |
| | 11 | Highest volume setting |
|------+-------+---------------------------------------------|
| 3, 2 | 00 | Speaker disabled |
| | | |
| | 01 | Speaker enabled until connection |
| | | established |
| | 10 | |
| | | Speaker enabled |
| | 11 | |
| | | Speaker off during dialing |
|------+-------+---------------------------------------------|
| 6, 5 | 000 | Busy and dialtone detection disabled, |
| ,4 | | result codes 0-4 enabled |
| | 001 | |
| | | Not used |
| | 010 | |
| | | Not used |
| | 011 | |
| | | Not used |
| | 100 | |
| | | Busy and dialtone detection disabled, |
| | 101 | result codes 0-5, 10 enabled |
| | | |
| | 110 | Busy tone detection disabled, dialtone |
| | | detection enabled, result codes 0-6, 10 |
| | í 111 | enabled |
| | | |
| | | Busy tone detection enabled, dialtone |
| | | detection disabled, result codes 0-5, 7, 10 |
| | | enabled |
| | | |
| | | Busy and dialtone detection enabled, all |
| | | result codes enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S23 |
|------------------------------------------------------------|
| Format | AT [cmds] S23=n [cmds] |
|--------------+---------------------------------------------|
| Default: | Unidentified |
|--------------+---------------------------------------------|
| Range: | 0-189 |
|--------------+---------------------------------------------|
| Unit: | Bit-mapped. |
|--------------+---------------------------------------------|
| Description: | Grants/denies remote digital loopback, |
| | controls DTE rate and parity, and sets |
| | guard tone. |
|--------------+---------------------------------------------|
| Bit | Value | Function |
|------+-------+---------------------------------------------|
| 0 | 0 | Ignore remote digital loopback request |
| | | |
| | í 1 | Grant remote digital loopback request |
|------+-------+---------------------------------------------|
| 3, | 000 | Sets serial port speed to 300bps |
| 2, | | |
| | 001 | Not used |
| 1 | | |
| | 010 | Sets serial port speed to 1200bps |
| | | |
| | 011 | Sets serial port speed to 2400bps |
| | | |
| | 100 | Sets serial port speed to 4800bps |
| | | |
| | 101 | Sets serial port speed to 9600bps |
| | | |
| | 110 | Sets serial port speed to 19.2Kbps |
| | | |
| | 111 | Not used |
|------+-------+---------------------------------------------|
| 5,4 | í 00 | Parity even |
| | | |
| | 01 | Not used |
| | | |
| | 10 | Parity odd |
| | | |
| | 11 | Mark or no parity |
|------+-------+---------------------------------------------|
| 7, 6 | 00 | Guard tone Disabled |
| | | |
| | 01 | 550Hz guard tone enabled |
| | | |
| | 10 | 1800Hz guard tone enabled |
| | | |
| | 11 | Not used |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S27 |
|------------------------------------------------------------|
| Format: | AT [cmds] S27=n [cmds] |
|------------------+-----------------------------------------|
| Default: | 73 |
|------------------+-----------------------------------------|
| Range: | 0-78 |
|------------------+-----------------------------------------|
| Description: | Controls connect mode, line type and |
| | protocol |
|------------------------------------------------------------|
| Bit | Value | Function |
|-----------+-----------+------------------------------------|
| 3, 1, 0 | 0x00 | Direct mode |
| | | |
| | 0x01 | Not used |
| | | |
| | 0x10 | Not used |
| | | |
| | 0x11 | Not used |
| | | |
| | 1x00 | Not used |
| | | |
| | í 1x01 | V.42 with fallback enabled |
| | | |
| | 1x10 | Normal mode |
| | | |
| | 1x11 | Not used |
|------------------------------------------------------------|
| 2 | í 0 | Switched line |
| | | |
| | 1 | Not used |
|---------------+---------------+----------------------------|
| 4 | 0 | Not used |
|---------------+---------------+----------------------------|
| 5 | 0 | Not used |
|---------------+---------------+----------------------------|
| 6 | 0 | V.21/V.22 enabled |
| | | |
| | í 1 | Bell 212A enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BREAK |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] Yn [cmds] |
|--------------+---------------------------------------------|
| Description: | Enables break signal send and reaction |
|------------------------------------------------------------|
| Command | Function |
|----------------+-------------------------------------------|
| í Y0 | Modem ignores and does not send break |
| | signals |
|----------------+-------------------------------------------|
| Y1 | Modem disconnects four seconds after |
| | sending break |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BREAK SEND |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Bn [cmds] |
|--------------+---------------------------------------------|
| Default: | 3 |
|--------------+---------------------------------------------|
| Range: | 1-9 |
|--------------+---------------------------------------------|
| Unit: | .1 second |
|--------------+---------------------------------------------|
| Description: | Sends break to modem |
+------------------------------------------------------------+
+----------------------------------------------------------------+
| BREAK TYPE |
|----------------------------------------------------------------|
|Type: |Configuration |
|------------------+---------------------------------------------|
|Format: |AT [cmds] \Kn [cmds] |
|------------------+---------------------------------------------|
|Description: |Configures action of break signal. |
|----------------------------------------------------------------|
| Command |Break from DTE | Break from | Modem | Break from |
| | while in |DTE while in| receives |remote modem|
| | | | break from | while in |
| |reliable/normal|direct mode |DTE while in|normal mode |
| | mode | |command mode| |
|---------+---------------+------------+------------+------------|
| \K0 |Do not send |Send break |Buffers |Buffers |
| |break to remote|to remote |cleared and |cleared and |
| |modem. |modem |break sent |break sent |
| | |immediately,|to remote |to DTE. |
| | |then enter |modem. | |
| | |command | | |
| | |mode. | | |
|---------+---------------+------------+------------+------------|
| \K1 |Buffers cleared|Send break |Buffers |Buffers |
| |and break sent |to remote |cleared and |cleared and |
| |to remote |modem |break sent |break sent |
| |modem. |immediately.|to remote |to DTE. |
| | | |modem. | |
|---------+---------------+------------+------------+------------|
| \K2 |Do not send |Send break |Send break |Send break |
| |break to remote|to remote |to remote |to DTE |
| |modem. |modem |modem |immediately.|
| | |immediately,|immediately.| |
| | |then enter | | |
| | |command | | |
| | |mode. | | |
|---------+---------------+------------+------------+------------|
| \K3 |Send break to |Send break |Send break |Send break |
| |remote modem |to remote |to remote |to DTE |
| |immediately. |modem |modem |immediately.|
| | |immediately.|immediately.| |
|---------+---------------+------------+------------+------------|
| \K4 |Do not send |Send break |Send break |Break sent |
| |break to remote|to remote |to remote |with |
| |modem. |modem |modem with |received |
| | |immediately,|transmitted |data to the |
| | |then enter |data. |DTE. |
| | |command | | |
| | |mode. | | |
|---------+---------------+------------+------------+------------|
| í \K5 |Send break with|Send break |Send break |Break sent |
| |transmitted |to remote |to remote |with |
| |data. |modem |modem with |received |
| | |immediately.|transmitted |data to the |
| | | |data. |DTE. |
+----------------------------------------------------------------+
+------------------------------------------------------------+
| COMPRESSION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT %Cn |
|--------------+---------------------------------------------|
| Description: | Selects data compression |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %C0 | V.42bis/MNP5 data compression disabled |
|--------------+---------------------------------------------|
| %C1 | MNP5 data compression enabled |
|--------------+---------------------------------------------|
| %C2 | V.42bis data compression enabled |
|--------------+---------------------------------------------|
| í %C3 | V.42bis/MNP5 data compression enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONNECT SPEED |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] Fn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects connect speed |
|------------------------------------------------------------|
| Command | Function |
|----------------+-------------------------------------------|
| í F0 | Autoscan |
|----------------+-------------------------------------------|
| F1 | Connect at 300bps |
|----------------+-------------------------------------------|
| F2 | Not used |
|----------------+-------------------------------------------|
| F3 | V.23 |
|----------------+-------------------------------------------|
| F4 | Connect at 1200bps |
|----------------+-------------------------------------------|
| F5 | Connect at 2400bps |
|----------------+-------------------------------------------|
| F6 | Connect at 4800bps |
|----------------+-------------------------------------------|
| F7 | Connect at 7200bps |
|----------------+-------------------------------------------|
| F8 | Connect at 9600bps |
|----------------+-------------------------------------------|
| F9 | Connect at 12.0Kbps |
|----------------+-------------------------------------------|
| F10 | Connect at 14.4Kbps |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONNECT MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Nn [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets connect mode |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \N0 | Normal mode enabled |
|--------------+---------------------------------------------|
| \N1 | Direct mode enabled |
|--------------+---------------------------------------------|
| \N2 | MNP or V.42 mode only enabled |
|--------------+---------------------------------------------|
| í \N3 | MNP, V.42 or normal mode enabled |
|--------------+---------------------------------------------|
| \N4 | V.42 mode enabled |
|--------------+---------------------------------------------|
| \N5 | V.42 enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LINE TYPE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Ln [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects line type |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í &L0 | Switched line |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MAXIMUM BLOCK SIZE FOR TRANSMISSION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \An [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets the maximum transmittable block size |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \A0 | Maximum MNP block size is 64 characters |
|--------------+---------------------------------------------|
| í \A1 | Maximum MNP block size is 128 characters |
|--------------+---------------------------------------------|
| \A2 | Maximum MNP block size is 192 characters |
|--------------+---------------------------------------------|
| \A3 | Maximum MNP block size is 256 characters |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MNP 10 EXTENDED SERVICE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] -Kn [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls MNP 10 extended service |
|------------------------------------------------------------|
| Command | Function |
|----------------+-------------------------------------------|
| -K0 | MNP 10 extended service disabled |
|----------------+-------------------------------------------|
| í -K1 | MNP 10 extended service enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MNP 10 FALLBACK |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] -Qn [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls fallback from MNP 10 to |
| | V.22bis/V.22 |
|------------------------------------------------------------|
| Command | Function |
|----------------------------+-------------------------------|
| -Q0 | Fallback disabled |
|----------------------------+-------------------------------|
| í -Q1 | Fallback enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MNP10 LINK NEGOTIATION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] *Hn [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets the speed at which MNP10 link |
| | negotiation will occur |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í *H0 | Link will be negotiated at highest possible |
| | speed |
|--------------+---------------------------------------------|
| *H1 | Link will be negotiated at 1200bps |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MNP10 POWER LEVEL ADJUST |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] )Mn [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls automatic transmit power level |
| | adjustment during MNP 10 link negotiation |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í )M0 | Power level adjustment disabled |
|--------------+---------------------------------------------|
| )M1 | Power level adjustment enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MNP STREAM/BLOCK MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Ln [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects the transfer mode for MNP |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í \L0 | Stream mode for MNP enabled |
|--------------+---------------------------------------------|
| \L1 | Block mode for MNP enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REPORT SIGNAL QUALITY |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Q [cmds] |
|--------------+---------------------------------------------|
| Unit: | Unidentified |
|--------------+---------------------------------------------|
| Description: | Reports signal quality |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TEST STATUS |
|------------------------------------------------------------|
| Format | AT [cmds] S16=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0 - 125 |
|--------------+---------------------------------------------|
| Unit: | Bit-mapped |
|--------------+---------------------------------------------|
| Description: | Contains status of loopback tests. |
|--------------+---------------------------------------------|
| Bit | Value | Function |
|------+-------+---------------------------------------------|
| 0 | í 0 | Local analog loopback test disabled |
| | | |
| | 1 | Local analog loopback test enabled |
|------+-------+---------------------------------------------|
| 1 | 0 | Not used |
|------+-------+---------------------------------------------|
| 2 | í 0 | Local digital loopback test disabled |
| | | |
| | 1 | Local digital loopback test enabled |
|------+-------+---------------------------------------------|
| 3 | í 0 | Remote digital loopback test disabled |
| | | |
| | 1 | Remote digital loopback test enabled |
|------+-------+---------------------------------------------|
| 4 | í 0 | Remote digital loopback test not in |
| | | progress |
| | 1 | |
| | | Remote digital loopback test in progress |
|------+-------+---------------------------------------------|
| 5 | í 0 | Remote digital loopback test & error |
| | | disabled |
| | 1 | |
| | | Remote digital loopback test & error |
| | | enabled |
|------+-------+---------------------------------------------|
| 6 | í 0 | Local analog loopback with self test |
| | | disabled |
| | 1 | |
| | | Local analog loopback with self test |
| | | enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TRANSMIT LEVEL |
|------------------------------------------------------------|
| Type | Immediate |
|-------------+----------------------------------------------|
| Format | AT [cmds] %Ln |
|-------------+----------------------------------------------|
| Unit | -1 dBm |
|-------------+----------------------------------------------|
| Description | Displays received signal strength |