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# VEN-TEL, INC.
PCM96FAX
Modem Type Data (synchronous/asynchronous)
Maximum Data Rate 9600bps
Maximum Fax Rate 9600bps
Data Bus 8-bit ISA
Fax Class Class I & II
Data Modulation Protocol Bell 103A/212A
ITU-T V.21, V.22, V.22bis, V.32
Fax Modulation Protocol V.27ter, V.29
Error Correction/Compression MNP5, V.42, V.42bis
IMG IMG 1
+------------------------------------------------------------+
| BASE I/O ADDRESS SELECTION |
|------------------------------------------------------------|
| Address | SW1/1 | SW1/2 | SW1/3 | SW1/4 |
|--------------+-----------+-----------+----------+----------|
| COM1: (3F8h) | Off | On | On | Off |
|--------------+-----------+-----------+----------+----------|
| COM2: (2F8h) | On | Off | Off | Off |
|--------------+-----------+-----------+----------+----------|
| COM3: (3E8h) | Off | On | On | On |
|--------------+-----------+-----------+----------+----------|
| COM4: (2E8h) | On | Off | Off | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INTERRUPT SELECTION |
|------------------------------------------------------------|
| IRQ | SW1/1 | SW1/2 | J1/A | J1/B | J1/C | J1/D |
|-------+--------+--------+--------+--------+--------+-------|
| 3 | On | Off | Open | Open | Open | Open |
|-------+--------+--------+--------+--------+--------+-------|
| 4 | Off | On | Open | Open | Open | Open |
|-------+--------+--------+--------+--------+--------+-------|
| 5 | Off | Off | Closed | Open | Open | Open |
|-------+--------+--------+--------+--------+--------+-------|
| 6 | Off | Off | Open | Closed | Open | Open |
|-------+--------+--------+--------+--------+--------+-------|
| 7 | Off | Off | Open | Open | Closed | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIGNAL GROUND |
|------------------------------------------------------------|
| Function | JP2 |
|------------------------------------+-----------------------|
| Signal and chassis ground common | Open |
|------------------------------------+-----------------------|
| Signal and chassis ground separate | Closed |
|------------------------------------------------------------|
| Note: location of JP2 unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FACTORY CONFIGURED SETTINGS |
|------------------------------------------------------------|
| Jumper | Setting |
|----------------------------+-------------------------------|
| JP1 | Unidentified |
|------------------------------------------------------------|
| Note: location of JP1 unidentified. |
+------------------------------------------------------------+
Proprietary AT Command Set
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S14 |
|------------------------------------------------------------|
| Format | AT [cmds] S14=n [cmds] |
|-----------------+------------------------------------------|
| Example: | ATS14=139<CR> |
|-----------------+------------------------------------------|
| Default: | 171 |
|-----------------+------------------------------------------|
| Range: | 0 - 255 |
|-----------------+------------------------------------------|
| Unit: | Bit-mapped |
|-----------------+------------------------------------------|
| Description: | Controls echo, quiet mode, result codes, |
| | dial mode, and originate/answer mode. |
|------------------------------------------------------------|
| Bit | Value | Function |
|----------+--------+----------------------------------------|
| 0 | 1 | Not used. |
|----------+--------+----------------------------------------|
| 1 | 0 » 1 | Command echo function disabled. |
| | | |
| | | Command echo function enabled. |
|----------+--------+----------------------------------------|
| 2 | » 0 1 | Result code sending disabled. |
| | | |
| | | Result code sending enabled. |
|----------+--------+----------------------------------------|
| 3 | 0 » 1 | Numeric format enabled. |
| | | |
| | | Verbose format enabled. |
|----------+--------+----------------------------------------|
| 4 | 0 | Not used. |
|----------+--------+----------------------------------------|
| 5 | 0 » 1 | Tone dialing mode enabled. |
| | | |
| | | Pulse dialing mode enabled. |
|----------+--------+----------------------------------------|
| 6 | » 0 1 | Result codes normal. |
| | | |
| | | Result codes disabled in answer mode. |
|----------+--------+----------------------------------------|
| 7 | 0 » 1 | Answer mode enabled. |
| | | |
| | | Originate mode enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S21 |
|------------------------------------------------------------|
| Format | AT [cmds] S21=n [cmds] |
|----------------+-------------------------------------------|
| Example: | ATS21=1<CR> |
|----------------+-------------------------------------------|
| Default: | 0 |
|----------------+-------------------------------------------|
| Range: | 0 - 255 |
|----------------+-------------------------------------------|
| Unit: | Bit-mapped |
|----------------+-------------------------------------------|
| Description: | Controls low DTR action, DCD signal, and |
| | the Long Space Disconnect function. |
|------------------------------------------------------------|
| Bit | Value | Function |
|----------+-------+-----------------------------------------|
| 0 | 0 | Not used. |
|----------+-------+-----------------------------------------|
| 1 | » 0 1 | Profile 0 enabled. |
| | | |
| | | Profile 1 enabled. |
|----------+-------+-----------------------------------------|
| 2 | | |
|----------+-------+-----------------------------------------|
| 4, 3 | » 00 | DTR signal normal. |
| | 01 10 | |
| | 11 | Modem goes to command mode on low DTR. |
| | | |
| | | Modem sends OK result code when DTR |
| | | signal normal . |
| | | |
| | | Modem resets on DTR signal. |
|----------+-------+-----------------------------------------|
| 5 | » 0 1 | DCD forced high. |
| | | |
| | | DCD normal. |
|----------+-------+-----------------------------------------|
| 6 | » 0 1 | DSR forced high. |
| | | |
| | | DSR normal. |
|----------+-------+-----------------------------------------|
| 7 | » 0 1 | Long Space Disconnect function |
| | | disabled. |
| | | |
| | | Long Space Disconnect function enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S22 |
|------------------------------------------------------------|
| Format | AT [cmds] S22=n [cmds] |
|----------------+-------------------------------------------|
| Example: | ATS22=114<CR> |
|----------------+-------------------------------------------|
| Default: | 118 |
|----------------+-------------------------------------------|
| Range: | 0 - 255 |
|----------------+-------------------------------------------|
| Unit: | Bit-mapped |
|----------------+-------------------------------------------|
| Description: | Controls volume and speaker settings, |
| | result codes, and make/break pulse ratio. |
|------------------------------------------------------------|
| Bit | Value | Function |
|-----------+--------+---------------------------------------|
| 1, 0 | 00 01 | Lowest volume setting. |
| | » 10 | |
| | 11 | Low volume setting. |
| | | |
| | | Medium volume setting |
| | | |
| | | Highest volume setting. |
|-----------+--------+---------------------------------------|
| 3, 2 | 00 » | Speaker disabled. |
| | 01 10 | |
| | 11 | Speaker enabled until carrier signal |
| | | detected |
| | | |
| | | Speaker enabled. |
| | | |
| | | Speaker enabled following dialing, |
| | | then disabled after carrier signal |
| | | detected. |
|-----------+--------+---------------------------------------|
| 6, 5 ,4 | 000 | Busy and dialtone detection disabled, |
| | 100 | result codes 0-4 enabled. |
| | 101 | |
| | 110 » | Busy and dialtone detection disabled, |
| | 111 | result codes 0-5, 10 enabled. |
| | | |
| | | Busy tone detection disabled, |
| | | dialtone detection enabled, result |
| | | codes 0-6, 10 enabled. |
| | | |
| | | Busy tone detection enabled, dialtone |
| | | detection disabled, result codes 0-5, |
| | | 7, 10 enabled. |
| | | |
| | | Busy and dialtone detection enabled, |
| | | result codes 0-7, 10 enabled. |
|-----------+--------+---------------------------------------|
| 7 | » 0 1 | 39/61ms at 10pps (North America) |
| | | |
| | | 33/67ms at 10pps (Europe) |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S23 |
|------------------------------------------------------------|
| Format | AT [cmds] S23=n [cmds] |
|----------------+-------------------------------------------|
| Example: | ATS23=114<CR> |
|----------------+-------------------------------------------|
| Default: | 0, read-only (see note) |
|----------------+-------------------------------------------|
| Range: | 0 - 255 |
|----------------+-------------------------------------------|
| Unit: | Bit-mapped |
|----------------+-------------------------------------------|
| Description: | Controls guard tones. Also indicates |
| | detected serial port speed and parity. |
| | Also provides storage for remote digital |
| | loopback tests. |
|----------------+-------------------------------------------|
| Note: | All bits except bits 6 and 7 are |
| | read-only. |
|------------------------------------------------------------|
| Bit | Value | Function |
|-----------+--------+---------------------------------------|
| 0 | N/A | Reserved for internal use. |
|-----------+--------+---------------------------------------|
| 3, 2, 1 | 000 | Local speed detected at 300bps. |
| | 001 | |
| | 010 | Local speed detected at 600bps. |
| | 011 | |
| | 100 » | Local speed detected at 1200bps. |
| | 101 | |
| | 110 | Local speed detected at 2400bps. |
| | 111 | |
| | | Local speed detected at 4800bps. |
| | | |
| | | Local speed detected at 9600bps. |
| | | |
| | | Local speed detected at 19200bps. |
| | | |
| | | Local speed detected at 38400bps. |
|-----------+--------+---------------------------------------|
| 5, 4 | » 00 | Even parity. |
| | 10 11 | |
| | | Odd parity. |
| | | |
| | | No parity. |
|-----------+--------+---------------------------------------|
| 7, 6 | » 00 | Guard tone disabled. |
| | 01 10 | |
| | | 550Hz guard tone enabled. |
| | | |
| | | 1800Hz guard tone enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S27 |
|------------------------------------------------------------|
| Format | AT [cmds] S27=n [cmds] |
|-----------------+------------------------------------------|
| Example: | ATS27=201<CR> |
|-----------------+------------------------------------------|
| Default: | 73 |
|-----------------+------------------------------------------|
| Range: | 0 - 255 |
|-----------------+------------------------------------------|
| Unit: | Bit-mapped |
|-----------------+------------------------------------------|
| Description: | Controls communications mode, line type, |
| | and protocol type. |
|-----------------+------------------------------------------|
| Note: | Be aware that bits 2 and 3 are out of |
| | order. |
|------------------------------------------------------------|
| Bit | Value | Function |
|------------+--------+--------------------------------------|
| 3, 1, 0 | 000 » | Asynchronous mode, serial port speed |
| | 101 | follows connect speed. |
| | 110 | |
| | | Error-correcting mode. |
| | | |
| | | Asynchronous mode, serial port speed |
| | | locked. |
|------------+--------+--------------------------------------|
| 2 | » 0 1 | Switched line operation enabled. |
| | | |
| | | Leased line operation enabled |
|------------+--------+--------------------------------------|
| 4 | 0 | Not used. |
|------------+--------+--------------------------------------|
| 5 | 0 | Not used. |
|------------+--------+--------------------------------------|
| 6 | » 0 1 | Select CCITT protocols. |
| | | |
| | | Select Bell protocols. |
|------------+--------+--------------------------------------|
| 7 | 0 | Not used. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| COMPRESSION |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S41=n [cmds] |
|--------------+---------------------------------------------|
| Example: | ATS41=2<CR> |
|--------------+---------------------------------------------|
| Description: | Selects data compression. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| S41=0 | Data compression disabled. |
|--------------+---------------------------------------------|
| S41=1 | Data compression enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| COMPRESSION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT %Cn |
|--------------+---------------------------------------------|
| Example: | AT %C0 *Y1<CR> |
|--------------+---------------------------------------------|
| Description: | Selects data compression. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %C0 | Data compression disabled. |
|--------------+---------------------------------------------|
| » %C1 | Data compression enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INACTIVITY TIMER |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Tn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT\T20<CR> |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | 1 minute |
|--------------+---------------------------------------------|
| Description: | Sets the length of time that the modem does |
| | not receive information before it |
| | disconnects. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LOOPBACK TESTS |
|------------------------------------------------------------|
| Format | AT [cmds] S16=n [cmds] |
|----------------+-------------------------------------------|
| Example: | ATS16=32<CR> |
|----------------+-------------------------------------------|
| Default: | 0 |
|----------------+-------------------------------------------|
| Range: | 0 - 255 |
|----------------+-------------------------------------------|
| Unit: | Bit-mapped |
|----------------+-------------------------------------------|
| Description: | Enables loopback tests. |
|----------------+-------------------------------------------|
| Note: | Bit 3 is read-only. |
|------------------------------------------------------------|
| Bit | Value | Function |
|----------+-------+-----------------------------------------|
| 0 | » 0 1 | Local analog loopback test disabled. |
| | | |
| | | Local analog loopback test enabled. |
|----------+-------+-----------------------------------------|
| 1 | 0 | Not used. |
|----------+-------+-----------------------------------------|
| 2 | » 0 1 | Local digital loopback test disabled. |
| | | |
| | | Local digital loopback test enabled. |
|----------+-------+-----------------------------------------|
| 3 | » 0 1 | Modem is not performing remote digital |
| | | loopback test. |
| | | |
| | | Modem is performing remote digital |
| | | loopback test. |
|----------+-------+-----------------------------------------|
| 4 | » 0 1 | Remote digital loopback test disabled. |
| | | |
| | | Remote digital loopback test enabled. |
|----------+-------+-----------------------------------------|
| 5 | » 0 1 | Remote digital loopback with local |
| | | self-test disabled. |
| | | |
| | | Remote digital loopback with local |
| | | self-test enabled. |
|----------+-------+-----------------------------------------|
| 6 | » 0 1 | Local analog loopback with local |
| | | self-test disabled. |
| | | |
| | | Local analog loopback with local |
| | | self-test enabled. |
+------------------------------------------------------------+