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# BOCA RESEARCH, INC.
BOCAMODEM M144IW
Modem Type Data (synchronous/asynchronous)/Fax
Maximum Data Rate 14.4Kbps
Maximum Fax Rate 9600bps
Data Bus 8-bit ISA
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.21CH2, V.27ter, V.29
Protocol
Error MNP5, V.42, V.42bis
Correction/Compression
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| Line out | CN1 | Line in | CN2 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BASE I/O ADDRESS SELECTION |
|------------------------------------------------------------|
| Port | JP1/A | JP1/B | JP1/C | JP1/D |
|----------------+----------+----------+----------+----------|
| » COM1: (3F8h) | Closed | Open | Open | Open |
|----------------+----------+----------+----------+----------|
| COM2: (2F8h) | Open | Closed | Open | Open |
|----------------+----------+----------+----------+----------|
| COM3: (3E8h) | Open | Open | Closed | Open |
|----------------+----------+----------+----------+----------|
| COM4: (2E8h) | Open | Open | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INTERRUPT SELECTION |
|------------------------------------------------------------|
| IRQ | JP1/E | JP1/F | JP1/G | JP1/H |
|---------+------------+------------+------------+-----------|
| 3 | Closed | Open | Open | Open |
|---------+------------+------------+------------+-----------|
| » 4 | Open | Closed | Open | Open |
|---------+------------+------------+------------+-----------|
| 5 | Open | Open | Closed | Open |
|---------+------------+------------+------------+-----------|
| 7 | Open | Open | Open | Closed |
+------------------------------------------------------------+
Proprietary AT Command Set
+------------------------------------------------------------+
| AUTO-RETRAIN - FALLBACK/FALLFORWARD |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %En [cmds] |
|--------------+---------------------------------------------|
| Example: | AT %E1 <CR> |
|--------------+---------------------------------------------|
| Description: | Controls auto-retrain mode and |
| | fallback/fall forward. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » %E0 | Auto-retrain disabled. |
|--------------+---------------------------------------------|
| %E1 | Auto-retrain enabled. |
|--------------+---------------------------------------------|
| %E2 | Fallback/fall forward enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTERS |
|------------------------------------------------------------|
| Registers | Default |
|----------------------------+-------------------------------|
| S14 | 170 |
|----------------------------+-------------------------------|
| S21 | 0 |
|----------------------------+-------------------------------|
| S22 | 117 |
|----------------------------+-------------------------------|
| S23 | 7 |
|----------------------------+-------------------------------|
| S27 | 9 |
|----------------------------+-------------------------------|
| S28 | Unidentified |
|----------------------------+-------------------------------|
| S31 | Unidentified |
|----------------------------+-------------------------------|
| S39 | Unidentified |
|----------------------------+-------------------------------|
| S40 | Unidentified |
|----------------------------+-------------------------------|
| S41 | Unidentified |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BREAK SEND |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Bn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \B3<CR> |
|--------------+---------------------------------------------|
| Default: | 3 |
|--------------+---------------------------------------------|
| Range: | 1-9 |
|--------------+---------------------------------------------|
| Unit: | .1 second |
|--------------+---------------------------------------------|
| Description: | Sends break to modem. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BREAK TYPE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Kn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \K1 <CR> |
|--------------+---------------------------------------------|
| Description: | Configures action of break signal. |
|------------------------------------------------------------|
| Command | Break from | Break from | Break from |
| | DTE | DTE | remote modem |
| | | | |
| | MNP/Normal | Direct mode | |
| | mode | | |
|---------------+--------------+--------------+--------------|
| \K0 | Enter | Send break | Buffers |
| | command | to remote | cleared and |
| | mode, do not | modem | break sent |
| | send break | immediately, | to DTE. |
| | to remote | then enter | |
| | modem. | command | |
| | | mode. | |
|---------------+--------------+--------------+--------------|
| \K1 | Buffers | Send break | Buffers |
| | cleared and | to remote | cleared and |
| | break sent | modem | break sent |
| | to remote | immediately, | to DTE. |
| | modem. | then enter | |
| | | command | |
| | | mode. | |
|---------------+--------------+--------------+--------------|
| \K2 | Enter | Send break | Send break |
| | command | to remote | to DTE |
| | mode, do not | modem | immediately. |
| | send break | immediately. | |
| | to remote | | |
| | modem. | | |
|---------------+--------------+--------------+--------------|
| \K3 | Send break | Send break | Send break |
| | to remote | to remote | to DTE |
| | modem | modem | immediately. |
| | immediately. | immediately, | |
| | | then enter | |
| | | command | |
| | | mode. | |
|---------------+--------------+--------------+--------------|
| \K4 | Enter | Send break | Break sent |
| | command | to remote | with |
| | mode, do not | modem | received |
| | send break | immediately. | data to the |
| | to remote | | DTE. |
| | modem. | | |
|---------------+--------------+--------------+--------------|
| » \K5 | Send break | Send break | Break sent |
| | with | to remote | with |
| | transmitted | modem | received |
| | data. | immediately. | data to the |
| | | | DTE. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| COMPRESSION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmd] %Cn [cmd] |
|--------------+---------------------------------------------|
| Example: | AT \N2 %C1 \K5<CR> |
|--------------+---------------------------------------------|
| Description: | Selects data compression. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %C0 | Data compression disabled. |
|--------------+---------------------------------------------|
| %C1 | MNP5 enabled. |
|--------------+---------------------------------------------|
| %C2 | V.42bis enabled. |
|--------------+---------------------------------------------|
| » %C3 | MNP5 and V.42bis enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONNECT MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Nn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \N1 DT555-1212<CR> |
|--------------+---------------------------------------------|
| Description: | Sets connect mode. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \N0 | Normal mode enabled. |
|--------------+---------------------------------------------|
| \N1 | Direct mode enabled. |
|--------------+---------------------------------------------|
| \N2 | Reliable mode enabled. |
|--------------+---------------------------------------------|
| \N3 | Auto-reliable mode enabled, MNP mode with |
| | fallback to Normal mode. |
|--------------+---------------------------------------------|
| \N4 | LAPM error-correction mode enabled. |
|--------------+---------------------------------------------|
| \N5 | MNP error-correction mode enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FAX TRANSMIT LEVEL |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S92=n [cmds] |
|--------------+---------------------------------------------|
| Example: | ATS92=10<CR> |
|--------------+---------------------------------------------|
| Default: | 10 |
|--------------+---------------------------------------------|
| Range: | 1-15 |
|--------------+---------------------------------------------|
| Unit: | -1dBm |
|--------------+---------------------------------------------|
| Description: | Controls fax transmission level. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Gn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \G1 &K3<CR> |
|--------------+---------------------------------------------|
| Description: | Selects modem port flow control. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » \G0 | Flow control disabled. |
|--------------+---------------------------------------------|
| \G1 | Flow control enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL CHARACTER - XOFF |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S33=n [cmds] |
|--------------+---------------------------------------------|
| Example: | ATS33=19<CR> |
|--------------+---------------------------------------------|
| Default: | 19 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | ASCII |
|--------------+---------------------------------------------|
| Description: | Sets the character used to represent XOFF. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL CHARACTER - XON |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S32=n [cmds] |
|--------------+---------------------------------------------|
| Example: | ATS32=17<CR> |
|--------------+---------------------------------------------|
| Default: | 17 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | ASCII |
|--------------+---------------------------------------------|
| Description: | Sets the character used to represent XON. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LINE SIGNAL LEVEL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %L [cmds] |
|--------------+---------------------------------------------|
| Example: | AT %L &W<CR> |
|--------------+---------------------------------------------|
| Default: | Unidentified |
|--------------+---------------------------------------------|
| Range: | 9-43 |
|--------------+---------------------------------------------|
| Unit: | -1 dBm |
|--------------+---------------------------------------------|
| Description: | Returns received line signal level. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MAXIMUM BLOCK SIZE FOR TRANSMISSION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \An [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \A1 %C1<CR> |
|--------------+---------------------------------------------|
| Description: | Sets the maximum transmittable block size. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \A0 | MNP block size is 64 characters. |
|--------------+---------------------------------------------|
| » \A1 | MNP block size is 128 characters. |
|--------------+---------------------------------------------|
| \A2 | MNP block size is 192 characters. |
|--------------+---------------------------------------------|
| \A3 | MNP block size is 256 characters. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MNP STREAM/BLOCK MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Ln [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \L1 DT555-1212<CR> |
|--------------+---------------------------------------------|
| Description: | Selects the transfer mode for MNP. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » \L0 | Stream mode for MNP enabled. |
|--------------+---------------------------------------------|
| \L1 | Block mode for MNP enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MNP10 LINK NEGOTIATION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] *Hn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT *H0 \W1 <CR> |
|--------------+---------------------------------------------|
| Description: | Sets the speed at which MNP10 link |
| | negotiation will occur. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » *H0 | Link will be negotiated at highest possible |
| | speed. |
|--------------+---------------------------------------------|
| *H1 | Link will be negotiated at 1200bps. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PSTN TRANSMIT LEVEL |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S91=n [cmds] |
|--------------+---------------------------------------------|
| Example: | ATS91=10<CR> |
|--------------+---------------------------------------------|
| Default: | 10 |
|--------------+---------------------------------------------|
| Range: | 1-15 |
|--------------+---------------------------------------------|
| Unit: | -1dBm |
|--------------+---------------------------------------------|
| Description: | Controls PSTN transmission level. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REPORT SIGNAL QUALITY |
|------------------------------------------------------------|
| Type: | Configuration |
|-----------------------+------------------------------------|
| Format: | AT [cmds] %Q [cmds] |
|-----------------------+------------------------------------|
| Example: | AT %Q &W<CR> |
|-----------------------+------------------------------------|
| Range: | 0-255 |
|-----------------------+------------------------------------|
| Description: | Reports signal quality. |
|------------------------------------------------------------|
| Note: A value of 8 or greater retrain enabled, only when |
| %E1 is enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SLEEP TIMER |
|------------------------------------------------------------|
| Format | AT [cmds] S24=n [cmds] |
|--------------+---------------------------------------------|
| Example: | ATS24=0<CR> |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0 - 255 |
|--------------+---------------------------------------------|
| Unit: | 1 second |
|--------------+---------------------------------------------|
| Description: | Maximum duration of DTE and DCE inactivity |
| | allowed prior to initiating low-power sleep |
| | mode. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TEST MODES |
|------------------------------------------------------------|
| Format | AT [cmds] S16=n [cmds] |
|---------------+--------------------------------------------|
| Example: | ATS16=128<CR> |
|---------------+--------------------------------------------|
| Default: | 128 |
|---------------+--------------------------------------------|
| Range: | 0 - 255 |
|---------------+--------------------------------------------|
| Unit: | Bit-mapped |
|---------------+--------------------------------------------|
| Description: | Select type of loopback test. |
|------------------------------------------------------------|
| Bit | Value | Function |
|---------+--------+-----------------------------------------|
| 0 | 0 1 | Local analog loopback test not in |
| | | progress. |
| | | |
| | | Local analog loopback test in progress. |
|---------+--------+-----------------------------------------|
| 1 | 0 1 | Remote analog loopback test not in |
| | | progress. |
| | | |
| | | Remote analog loopback test in |
| | | progress. |
|---------+--------+-----------------------------------------|
| 2 | 0 1 | Local digital loopback test not in |
| | | progress. |
| | | |
| | | Local digital loopback test in |
| | | progress. |
|---------+--------+-----------------------------------------|
| 3 | 0 1 | Remotely requested remote digital |
| | | loopback test not in progress. |
| | | |
| | | Remotely requested remote digital |
| | | loopback test in progress. |
|---------+--------+-----------------------------------------|
| 4 | 0 1 | Locally requested remote digital |
| | | loopback test not in progress. |
| | | |
| | | Locally requested remote digital |
| | | loopback test in progress. |
|---------+--------+-----------------------------------------|
| 5 | 0 1 | Remote digital loopback with local |
| | | self-test not in progress. |
| | | |
| | | Remote digital loopback with local |
| | | self-test in progress. |
|---------+--------+-----------------------------------------|
| 6 | 0 1 | Local analog loopback with local |
| | | self-test not in progress. |
| | | |
| | | Local analog loopback with local |
| | | self-test in progress. |
|---------+--------+-----------------------------------------|
| 7 | 0 » 1 | Remote analog loopback with local |
| | | self-test not in progress. |
| | | |
| | | Remote analog loopback with local |
| | | self-test in progress. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.23 DIRECTION CONTROL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Fn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT %F1 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Controls the direction of transmit/receive |
| | 75/1200bps, only when \W1 is selected. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %F0 | 75bps transmit/1200bps receive enabled. |
|--------------+---------------------------------------------|
| » %F1 | 1200bps transmit/75bps receive enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.23 SPLIT BAUD MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Wn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \W1 <CR> |
|--------------+---------------------------------------------|
| Description: | Controls V.23 split baud mode. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » \W0 | V.23 split baud mode disabled. |
|--------------+---------------------------------------------|
| \W1 | V.23 split baud mode enabled. |
+------------------------------------------------------------+