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# UNIDENTIFIED
2400 BPS INTERNAL MODEM
Card Type Modem (asynchronous)
Chip Set Unidentified
Maximum Data Rate 2400bps
Data Bus 8-bit ISA
Data Modulation Protocol Bell 103A/212A
ITU-T V.21, V.22, V.22bis
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|------------------------------------------------------------|
| Line out | CN1 | Line in | CN2 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT ADDRESS |
|------------------------------------------------------------|
| Setting | JP1/A | JP1/B |
|--------------------+-------------------+-------------------|
| COM1 (3F8h) | Closed | Closed |
|--------------------+-------------------+-------------------|
| í COM2 (2F8h) | Open | Closed |
|--------------------+-------------------+-------------------|
| COM3 (3E8h) | Closed | Open |
|--------------------+-------------------+-------------------|
| COM4 (2E8h) | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INTERRUPT |
|------------------------------------------------------------|
| Setting | JP1/C | JP1/D |
|--------------------+-------------------+-------------------|
| í 3 | Open | Closed |
|--------------------+-------------------+-------------------|
| 4 | Closed | Open |
+------------------------------------------------------------+
Proprietary AT Command Set
+------------------------------------------------------------+
| BIT MAPPED REGISTERS |
|------------------------------------------------------------|
| Register | Default |
|----------------------------+-------------------------------|
| S14 | Unidentified |
|----------------------------+-------------------------------|
| S16 | Unidentified |
|----------------------------+-------------------------------|
| S21 | Unidentified |
|----------------------------+-------------------------------|
| S22 | Unidentified |
|----------------------------+-------------------------------|
| S23 | Unidentified |
|----------------------------+-------------------------------|
| S27 | Unidentified |
+------------------------------------------------------------+