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# U.S. ROBOTICS, INC.
SPORTSTER 1200
Modem Type Data (synchronous/asynchronous)
Maximum Data Rate 1200bps
Data Bus External
Data Modulation Protocol Bell 103A/212A
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|--------------------+----------+-----------------+----------|
| Line out | CN1 | Power | CN4 |
|--------------------+----------+-----------------+----------|
| Line in | CN2 | Volume | SW3 |
|--------------------+----------+-----------------+----------|
| RS-232/422 | CN3 | Power | SW2 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAGNOSTIC LED(S) |
|------------------------------------------------------------|
| LED | Color | Status | Condition |
|------+-------+----------+----------------------------------|
| LED1 | Red | On | Analog loopback self test mode |
|------+-------+----------+----------------------------------|
| LED1 | Green | On | Data mode |
|------+-------+----------+----------------------------------|
| LED2 | Red | Blinking | Modem is transmitting/receiving |
| | | | data |
|------+-------+----------+----------------------------------|
| LED2 | Green | On | Carrier signal detected |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DTR SIGNAL |
|------------------------------------------------------------|
| Setting | SW1/1 |
|----------------------------+-------------------------------|
| » On | DTR forced high |
|----------------------------+-------------------------------|
| Off | DTR normal |
+------------------------------------------------------------+
+------------------------------------------------------------+
| RESULT CODES |
|------------------------------------------------------------|
| Setting | SW1/2 |
|--------------------------------+---------------------------|
| » Verbose result codes enabled | On |
|--------------------------------+---------------------------|
| Numeric result codes enabled | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| RESULT CODES DISPLAY |
|------------------------------------------------------------|
| Setting | SW1/3 |
|-------------------------------+----------------------------|
| » Display enabled | On |
|-------------------------------+----------------------------|
| Display disabled | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ECHO COMMANDS DISPLAY |
|------------------------------------------------------------|
| Setting | SW1/4 |
|-------------------------------+----------------------------|
| » Local echo enabled | Off |
|-------------------------------+----------------------------|
| Local echo disabled | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AUTO ANSWER |
|------------------------------------------------------------|
| Setting | SW1/5 |
|--------------------------------------+---------------------|
| » Modem doe not answer on first ring | On |
|--------------------------------------+---------------------|
| Modem answers on first ring | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CARRIER DETECT |
|------------------------------------------------------------|
| Setting | SW1/6 |
|-------------------------------+----------------------------|
| » CD normal | Off |
|-------------------------------+----------------------------|
| CD forced high | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MULT-LINE INSTALLATION |
|------------------------------------------------------------|
| Setting | SW1/7 |
|-------------------------------+----------------------------|
| » Single phone connected | Off |
|-------------------------------+----------------------------|
| Multiple phones connected | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AT COMMAND SET |
|------------------------------------------------------------|
| Setting | SW1/8 |
|-------------------------------+----------------------------|
| » AT command set recognized | On |
|-------------------------------+----------------------------|
| AT command set disabled | Off |
+------------------------------------------------------------+
Proprietary AT Command Set
+------------------------------------------------------------+
| ANALOG LOOPBACK SELF TEST |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S16=n [cmds] |
|--------------+---------------------------------------------|
| Example: | ATS16=139<CR> |
|--------------+---------------------------------------------|
| Description: | Selects the tone dialing test |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| 0 | Data mode. |
|--------------+---------------------------------------------|
| 1 | Analog loopback. |
+------------------------------------------------------------+