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# U.S. ROBOTICS, INC.
SPORTSTER 28,800 EXTERNAL
Modem Type Data (synchronous/asynchronous)/Fax
Maximum Data Rate 28.8Kbps
Maximum Fax Rate 14.4Kbps
Data Bus External
Fax Class Class I & II
Data Modulation Bell 103A/212A
Protocol
ITU-T V.22, V.22bis, V.23, V.32,
V.32bis, V.25
Fax Modulation ITU-T V.17, 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 | CN3 | DC power | CN1 |
|------------------+----------+-------------------+----------|
| Line in | CN4 | Volume | R1 |
|------------------+----------+-------------------+----------|
| RS-232/422 | CN2 | Power switch | SW2 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DTR SIGNAL |
|------------------------------------------------------------|
| Setting | SW1/1 |
|-------------------------------+----------------------------|
| » DTR normal | Off |
|-------------------------------+----------------------------|
| DTR forced high | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| RESULT CODES |
|------------------------------------------------------------|
| Setting | SW1/2 |
|-------------------------------+----------------------------|
| » Verbal result codes enabled | Off |
|-------------------------------+----------------------------|
| Numeric result codes enabled | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| RESULT CODES DISPLAY |
|------------------------------------------------------------|
| Setting | SW1/3 |
|-------------------------------+----------------------------|
| » Enabled | On |
|-------------------------------+----------------------------|
| Disabled | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ECHO DISPLAY |
|------------------------------------------------------------|
| Setting | SW1/4 |
|-------------------------------+----------------------------|
| » Enabled | Off |
|-------------------------------+----------------------------|
| Disabled | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AUTO ANSWER |
|------------------------------------------------------------|
| Setting | SW1/5 |
|-------------------------------+----------------------------|
| » Disabled | On |
|-------------------------------+----------------------------|
| Enabled | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CARRIER DETECT |
|------------------------------------------------------------|
| Setting | SW1/6 |
|-------------------------------+----------------------------|
| » CD normal | Off |
|-------------------------------+----------------------------|
| CD forced high | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SOFTWARE RESET |
|------------------------------------------------------------|
| Setting | SW1/7 |
|-------------------------------+----------------------------|
| » CD normal | Off |
|-------------------------------+----------------------------|
| CD forced high | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AT COMMAND SET |
|------------------------------------------------------------|
| Setting | SW1/8 |
|-------------------------------+----------------------------|
| Enabled | On |
|-------------------------------+----------------------------|
| Disabled | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAGNOSTIC LED(S) |
|------------------------------------------------------------|
| LED | Color | Status | Mode | Condition |
|---------+-------+----------+--------+----------------------|
| AA | Red | On | Answer | Auto-answer enabled |
|---------+-------+----------+--------+----------------------|
| AA | Red | Off | N/A | Auto-answer disabled |
|---------+-------+----------+--------+----------------------|
| AA | Red | Blinking | N/A | Phone is ringing |
|---------+-------+----------+--------+----------------------|
| CD | Red | On | N/A | Carrier signal |
| | | | | detected |
|---------+-------+----------+--------+----------------------|
| CD | Red | Off | N/A | Carrier signal not |
| | | | | detected |
|---------+-------+----------+--------+----------------------|
| RD | Red | Blinking | N/A | Modem is receiving |
| | | | | data or sending |
| | | | | result codes |
|---------+-------+----------+--------+----------------------|
| RD | Red | Off | N/A | Modem is not |
| | | | | receiving data |
|---------+-------+----------+--------+----------------------|
| SD | Red | Blinking | N/A | Modem is |
| | | | | transmitting data |
|---------+-------+----------+--------+----------------------|
| SD | Red | Off | N/A | Modem is not |
| | | | | transmitting data |
|---------+-------+----------+--------+----------------------|
| TR | Red | On | N/A | DTR signal is high |
|---------+-------+----------+--------+----------------------|
| TR | Red | Off | N/A | DTR signal is low |
|---------+-------+----------+--------+----------------------|
| CS | Red | On | N/A | CTS high |
|---------+-------+----------+--------+----------------------|
| CS | Red | Off | N/A | CTS normal |
|---------+-------+----------+--------+----------------------|
| ARQ/FAX | Red | On | Data | Error control |
| | | | | connection |
| | | | | established |
|---------+-------+----------+--------+----------------------|
| ARQ/FAX | Red | Blinking | Data | Error control data |
| | | | | is being transmitted |
|---------+-------+----------+--------+----------------------|
| ARQ/FAX | Red | Blinking | Fax | Modem is connected |
| | | | | in FAX mode |
+------------------------------------------------------------+
Proprietary AT Command Set
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S13 |
|------------------------------------------------------------|
| Format: | AT [cmds] S13=n [cmds] |
|-----------------+------------------------------------------|
| Example: | ATS13=13<CR> |
|-----------------+------------------------------------------|
| Default: | 0 |
|-----------------+------------------------------------------|
| Range: | 0 - 89 |
|-----------------+------------------------------------------|
| Unit: | Bit-mapped |
|-----------------+------------------------------------------|
| Description: | Controls DTR reset, DTR dialing, reset |
| | dialing, and MNP3. |
|------------------------------------------------------------|
| Bit | Value | Function |
|-----------+--------------+---------------------------------|
| 0 | » 0 1 | DTR normal. |
| | | |
| | | Reset on low DTR. |
|-----------+--------------+---------------------------------|
| 1 | » 0 | Not used. |
|-----------+--------------+---------------------------------|
| 2 | » 0 | Not used. |
|-----------+--------------+---------------------------------|
| 3 | » 0 1 | DTR dialing disabled. |
| | | |
| | | DTR dialing enabled. |
|-----------+--------------+---------------------------------|
| 4 | » 0 1 | Reset dialing disabled. |
| | | |
| | | Reset dialing enabled. |
|-----------+--------------+---------------------------------|
| 5 | » 0 | Not used. |
|-----------+--------------+---------------------------------|
| 6 | » 0 1 | MNP 3 enabled. |
| | | |
| | | MNP 3 disabled. |
|-----------+--------------+---------------------------------|
| 7 | » 0 | Not used. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S15 |
|------------------------------------------------------------|
| Format: | AT [cmds] S15=n [cmds] |
|-----------------+------------------------------------------|
| Example: | ATS15=13<CR> |
|-----------------+------------------------------------------|
| Default: | 0 |
|-----------------+------------------------------------------|
| Range: | 0 - 56 |
|-----------------+------------------------------------------|
| Unit: | Bit-mapped |
|-----------------+------------------------------------------|
| Description: | Controls non-error-correcting mode |
| | buffer, MNP4, and BS/DEL switch. |
|------------------------------------------------------------|
| Bit | Value | Function |
|-----------+-------+----------------------------------------|
| 0 | » 0 | Not used. |
|-----------+-------+----------------------------------------|
| 1 | » 0 | Not used. |
|-----------+-------+----------------------------------------|
| 2 | » 0 | Not used. |
|-----------+-------+----------------------------------------|
| 3 | » 0 1 | Non-error-correcting mode transmit |
| | | buffer set to 1.5KB. |
| | | |
| | | Non-error-correcting mode transmit |
| | | buffer set to 128 bytes. |
|-----------+-------+----------------------------------------|
| 4 | » 0 1 | MNP 4 enabled. |
| | | |
| | | MNP 4 disabled. |
|-----------+-------+----------------------------------------|
| 5 | » 0 1 | Use backspace key for delete disabled. |
| | | |
| | | Use backspace key for delete enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S27 |
|------------------------------------------------------------|
| Format: | AT [cmds] S27=n [cmds] |
|-----------------+------------------------------------------|
| Example: | ATS27=139<CR> |
|-----------------+------------------------------------------|
| Default: | 0 |
|-----------------+------------------------------------------|
| Range: | 0 - 191 |
|-----------------+------------------------------------------|
| Unit: | Bit-mapped |
|-----------------+------------------------------------------|
| Description: | Controls V.21, V.32 encoding and |
| | modulation, V.42 answer tone and |
| | handshake, and 9600 result codes. |
|------------------------------------------------------------|
| Bit | Value | Function |
|-----------+--------+---------------------------------------|
| 0 | » 0 1 | V.21 disabled. |
| | | |
| | | V.21 enabled. |
|-----------+--------+---------------------------------------|
| 1 | » 0 1 | V.32 trellis coding disabled. |
| | | |
| | | V.32 trellis coding enabled. |
|-----------+--------+---------------------------------------|
| 2 | » 0 1 | V.32 modulation enabled. |
| | | |
| | | V.32 modulation disabled. |
|-----------+--------+---------------------------------------|
| 3 | » 0 1 | 2100Hz answer tone enabled. |
| | | |
| | | 2100Hz answer tone disabled. |
|-----------+--------+---------------------------------------|
| 5, 4 | » 00 | V.42 detect, LAPM and MNP enabled. |
| | 01 10 | |
| | 11 | V.42 detect and LAPM enabled. |
| | | |
| | | MNP enabled. |
| | | |
| | | LAPM enabled. |
|-----------+--------+---------------------------------------|
| 6 | » 0 | Not used. |
|-----------+--------+---------------------------------------|
| 7 | » 0 1 | Actual result codes displayed. |
| | | |
| | | Force 9600 result codes. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| COMPRESSION AND ERROR CORRECTION |
|------------------------------------------------------------|
| Format: | AT [cmds] S51=n [cmds] |
|----------------+-------------------------------------------|
| Example: | ATS51=3<CR> |
|----------------+-------------------------------------------|
| Default: | 0 |
|----------------+-------------------------------------------|
| Range: | 0 - 7 |
|----------------+-------------------------------------------|
| Unit: | Bit-mapped |
|----------------+-------------------------------------------|
| Description: | Selects compression and error correction |
| | for specific modulations. |
|------------------------------------------------------------|
| Bit | Value | Function |
|----------+-------+-----------------------------------------|
| 0 | » 0 1 | MNP/V.42 enabled during V.22 operation. |
| | | |
| | | MNP/V.42 disabled during V.22 |
| | | operation. |
|----------+-------+-----------------------------------------|
| 1 | » 0 1 | MNP/V.42 enabled during V.22bis |
| | | operation. |
| | | |
| | | MNP/V.42 disabled during V.22bis |
| | | operation. |
|----------+-------+-----------------------------------------|
| 2 | » 0 1 | MNP/V.42 enabled during V.32bis |
| | | operation. |
| | | |
| | | MNP/V.42 disabled during V.32bis |
| | | operation. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S56 |
|------------------------------------------------------------|
| Format: | AT [cmds] S56=n [cmds] |
|-----------------+------------------------------------------|
| Example: | ATS56=139<CR> |
|-----------------+------------------------------------------|
| Default: | 0 |
|-----------------+------------------------------------------|
| Range: | 0 - 223 |
|-----------------+------------------------------------------|
| Unit: | Bit-mapped |
|-----------------+------------------------------------------|
| Description: | Controls non-linearing coding, TX level |
| | deviation, pre-emphasis, pre-coding, |
| | shaping, V.34, and V.FC. |
|------------------------------------------------------------|
| Bit | Value | Function |
|-----------+----------+-------------------------------------|
| 0 | » 0 1 | Non linearing coding enabled. |
| | | |
| | | Non linearing coding disabled. |
|-----------+----------+-------------------------------------|
| 1 | » 0 1 | TX level deviation enabled. |
| | | |
| | | TX level deviation disabled. |
|-----------+----------+-------------------------------------|
| 2 | » 0 1 | Pre-emphasis enabled. |
| | | |
| | | Pre-emphasis disabled. |
|-----------+----------+-------------------------------------|
| 3 | » 0 1 | Pre-coding enabled. |
| | | |
| | | Pre-coding disabled. |
|-----------+----------+-------------------------------------|
| 4 | » 0 1 | Shaping enabled. |
| | | |
| | | Shaping disabled. |
|-----------+----------+-------------------------------------|
| 5 | » 0 | Not used. |
|-----------+----------+-------------------------------------|
| 6 | » 0 1 | V.34 enabled. |
| | | |
| | | V.34 disabled. |
|-----------+----------+-------------------------------------|
| 7 | » 0 1 | V.FC enabled. |
| | | |
| | | V.FC disabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BREAK LENGTH |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S21=n [cmds] |
|--------------+---------------------------------------------|
| Example: | ATS21=20<CR> |
|--------------+---------------------------------------------|
| Default: | 10 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | 10 ms |
|--------------+---------------------------------------------|
| Description: | Sets the length of error correction mode |
| | breaks sent from DCE to DTE in ARQ mode. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BREAK TYPE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Yn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT &Y0<CR> |
|--------------+---------------------------------------------|
| Description: | Configures action of break signal. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &Y0 | Break empties buffer. |
|--------------+---------------------------------------------|
| » &Y1 | Break empties buffer and is sent |
| | immediately. |
|--------------+---------------------------------------------|
| &Y2 | Break does not empty buffer and is sent |
| | immediately. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONNECTION SPEED UPPER LIMIT |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Nn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT &N1 DT555-1212<CR> |
|--------------+---------------------------------------------|
| Description: | Sets required connection speed if &U is set |
| | to 0. Otherwise, sets fastest allowed |
| | connection speed. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » &N0 | Variable. |
|--------------+---------------------------------------------|
| &N1 | 300bps |
|--------------+---------------------------------------------|
| &N2 | 1200bps |
|--------------+---------------------------------------------|
| &N3 | 2400bps |
|--------------+---------------------------------------------|
| &N4 | 4800bps |
|--------------+---------------------------------------------|
| &N5 | 7200bps |
|--------------+---------------------------------------------|
| &N6 | 9600bps |
|--------------+---------------------------------------------|
| &N7 | 12Kbps |
|--------------+---------------------------------------------|
| &N8 | 14.4Kbps |
|--------------+---------------------------------------------|
| &N9 | 16.8Kbps |
|--------------+---------------------------------------------|
| &N10 | 19.2Kbps |
|--------------+---------------------------------------------|
| &N11 | 21.6Kbps |
|--------------+---------------------------------------------|
| &N12 | 24Kbps |
|--------------+---------------------------------------------|
| &N13 | 26.4Kbps |
|--------------+---------------------------------------------|
| &N14 | 28.8Kbps |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONNECTION SPEED LOWER LIMIT |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Un [cmds] |
|--------------+---------------------------------------------|
| Example: | AT &U1 DT555-1212<CR> |
|--------------+---------------------------------------------|
| Description: | Sets slowest allowed connection speed if &N |
| | is set to 1 or higher. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » &U0 | Disabled. |
|--------------+---------------------------------------------|
| &U1 | 300bps |
|--------------+---------------------------------------------|
| &U2 | 1200bps |
|--------------+---------------------------------------------|
| &U3 | 2400bps |
|--------------+---------------------------------------------|
| &U4 | 4800bps |
|--------------+---------------------------------------------|
| &U5 | 7200bps |
|--------------+---------------------------------------------|
| &U6 | 9600bps |
|--------------+---------------------------------------------|
| &U7 | 12000bps |
|--------------+---------------------------------------------|
| &U8 | 14400bps |
|--------------+---------------------------------------------|
| &U9 | 16800bps |
|--------------+---------------------------------------------|
| &U10 | 19200bps |
|--------------+---------------------------------------------|
| &U11 | 21600bps |
|--------------+---------------------------------------------|
| &U12 | 24000bps |
|--------------+---------------------------------------------|
| &U13 | 26400bps |
|--------------+---------------------------------------------|
| &U14 | 28800bps |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ERROR CONTROL MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Mn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT &M1 %C1<CR> |
|--------------+---------------------------------------------|
| Description: | Selects active error-control protocols. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &M0 | Normal mode, error control disabled. |
|--------------+---------------------------------------------|
| » &M4 | Normal/ARQ. |
|--------------+---------------------------------------------|
| &M5 | ARQ mode. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ESCAPE CHARACTER RESPONSE |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S14=n [cmds] |
|--------------+---------------------------------------------|
| Example: | ATS14=0<CR> |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Description: | Controls reaction to escape character. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » S14=0 | Normal operation. |
|--------------+---------------------------------------------|
| S14=1 | When +++ is received, modem goes on hook, |
| | enters command state and sends NO CARRIER |
| | result code. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| EXTENDED RESULT CODES |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &An [cmds] |
|--------------+---------------------------------------------|
| Example: | AT &A1 %C1<CR> |
|--------------+---------------------------------------------|
| Description: | Selects extended result codes. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &A0 | Extended result codes disabled. |
|--------------+---------------------------------------------|
| &A1 | ARQ result codes enabled. |
|--------------+---------------------------------------------|
| &A2 | V.32 result code enabled. |
|--------------+---------------------------------------------|
| » &A3 | Error correction and compression result |
| | codes enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL CHARACTER - XON |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S22=n [cmds] |
|--------------+---------------------------------------------|
| Example: | ATS22=20<CR> |
|--------------+---------------------------------------------|
| Default: | 17 |
|--------------+---------------------------------------------|
| Range: | 0-127 |
|--------------+---------------------------------------------|
| Unit: | ASCII |
|--------------+---------------------------------------------|
| Description: | Sets the character used to represent XON. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL CHARACTER - XOFF |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S23=n [cmds] |
|--------------+---------------------------------------------|
| Example: | ATS23=20<CR> |
|--------------+---------------------------------------------|
| Default: | 19 |
|--------------+---------------------------------------------|
| Range: | 0-127 |
|--------------+---------------------------------------------|
| Unit: | ASCII |
|--------------+---------------------------------------------|
| Description: | Sets the character used to represent XOFF. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL PASSTHROUGH |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &In [cmds] |
|--------------+---------------------------------------------|
| Example: | AT &I0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Allows modem to act on, then transmit |
| | XON/XOFF characters. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » &I0 | Software flow control disabled. |
|--------------+---------------------------------------------|
| &I1 | XON/XOFF passthrough enabled. |
|--------------+---------------------------------------------|
| &I2 | XON/XOFF passthrough disabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL TYPE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Hn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT &H0 A<CR> |
|--------------+---------------------------------------------|
| Description: | Sets type of flow control used by modem. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &H0 | Flow control disabled. |
|--------------+---------------------------------------------|
| » &H1 | CTS/RTS flow control enabled. |
|--------------+---------------------------------------------|
| &H2 | XON/XOFF flow control enabled. |
|--------------+---------------------------------------------|
| &H3 | CTS/RTS and XON/XOFF flow control enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| HELP SCREENS |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT <prefix>$ |
|--------------+---------------------------------------------|
| Example: | AT &$<CR> |
|--------------+---------------------------------------------|
| Description: | Shows command help screens for all commands |
| | beginning with the given prefix, or no |
| | prefix if none is given. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| $ | Shows AT help screen. |
|--------------+---------------------------------------------|
| &$ | Shows AT& help screen. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INACTIVITY TIMER |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S19=n [cmds] |
|--------------+---------------------------------------------|
| Example: | ATS19=20<CR> |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | Unidentified |
|--------------+---------------------------------------------|
| Unit: | 1 minute |
|--------------+---------------------------------------------|
| Description: | Sets the length of time that the modem does |
| | not receive information before it |
| | disconnects. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LOCK SERIAL PORT |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Bn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT &N9 &B0<CR> |
|--------------+---------------------------------------------|
| Description: | Sets operation of serial port speed. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &B0 | Serial speed follows connect speed. |
|--------------+---------------------------------------------|
| » &B1 | Serial speed locked. |
|--------------+---------------------------------------------|
| &B2 | Serial speed locked in ARQ mode only. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MAPPING |
|------------------------------------------------------------|
| Format: | AT [cmds] S55=n [cmds] |
|----------------+-------------------------------------------|
| Example: | ATS55=13<CR> |
|----------------+-------------------------------------------|
| Default: | 0 |
|----------------+-------------------------------------------|
| Range: | 0 - 15 |
|----------------+-------------------------------------------|
| Unit: | Bit-mapped |
|----------------+-------------------------------------------|
| Description: | Controls mapping. |
|------------------------------------------------------------|
| Bit | Value | Function |
|----------+--------+----------------------------------------|
| 0 | » 0 1 | 8S-2D map enabled. |
| | | |
| | | 8S-2D map disabled. |
|----------+--------+----------------------------------------|
| 1 | » 0 1 | 16S-4D map enabled. |
| | | |
| | | 16S-4D map disabled. |
|----------+--------+----------------------------------------|
| 2 | » 0 1 | 32S-2D map enabled. |
| | | |
| | | 32S-2D map disabled. |
|----------+--------+----------------------------------------|
| 3 | » 0 1 | 64S-4D map enabled. |
| | | |
| | | 64S-4D map disabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REPORT INFORMATION |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] In [cmds] |
|--------------+---------------------------------------------|
| Example: | AT I1 O<CR> |
|--------------+---------------------------------------------|
| Description: | Displays modem properties. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| I0 | Reports product code. |
|--------------+---------------------------------------------|
| I1 | Reports ROM checksum result. |
|--------------+---------------------------------------------|
| I2 | Reports RAM checksum result. |
|--------------+---------------------------------------------|
| I3 | Reports firmware version. |
|--------------+---------------------------------------------|
| I4 | Reports current command settings. |
|--------------+---------------------------------------------|
| I5 | Reports current NVRAM settings. |
|--------------+---------------------------------------------|
| I6 | Reports current connection’s statistics. |
|--------------+---------------------------------------------|
| I7 | Reports configuration. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BAUD RATE |
|------------------------------------------------------------|
| Format: | AT [cmds] S54=n [cmds] |
|-----------------+------------------------------------------|
| Example: | ATS54=139<CR> |
|-----------------+------------------------------------------|
| Default: | 0 |
|-----------------+------------------------------------------|
| Range: | 0 - 255 |
|-----------------+------------------------------------------|
| Unit: | Bit-mapped |
|-----------------+------------------------------------------|
| Description: | Controls baud rate. |
|------------------------------------------------------------|
| Bit | Value | Function |
|-----------+--------+---------------------------------------|
| 0 | » 0 1 | 2400 baud rate enabled. |
| | | |
| | | 2400 baud rate disabled. |
|-----------+--------+---------------------------------------|
| 1 | » 0 1 | 2743 baud rate enabled. |
| | | |
| | | 2743 baud rate disabled. |
|-----------+--------+---------------------------------------|
| 2 | » 0 1 | 2800 baud rate enabled. |
| | | |
| | | 2800 baud rate disabled. |
|-----------+--------+---------------------------------------|
| 3 | » 0 1 | 3000 baud rate enabled. |
| | | |
| | | 3000 baud rate disabled. |
|-----------+--------+---------------------------------------|
| 4 | » 0 1 | 3200 baud rate enabled. |
| | | |
| | | 3200 baud rate disabled. |
|-----------+--------+---------------------------------------|
| 5 | » 0 1 | 3429 baud rate enabled. |
| | | |
| | | 3429 baud rate disabled. |
|-----------+--------+---------------------------------------|
| 6 | » 0 1 | Call indicate during V.34 operation |
| | | enabled. |
| | | |
| | | Call indicate during V.34 operation |
| | | disabled. |
|-----------+--------+---------------------------------------|
| 7 | » 0 1 | V.8 during V.34 operation enabled. |
| | | |
| | | V.8 during V.34 operation disabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TONE DIALING TEST |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S16=n [cmds] |
|--------------+---------------------------------------------|
| Example: | ATS16=1<CR> |
|--------------+---------------------------------------------|
| Description: | Selects the tone dialing test |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » S16=0 | Tone dialing test disabled. |
|--------------+---------------------------------------------|
| S16=1 | Tone dialing test enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.32 AND V.32bis MODULATIONS |
|------------------------------------------------------------|
| Format: | AT [cmds] S34=n [cmds] |
|----------------+-------------------------------------------|
| Example: | ATS34=13<CR> |
|----------------+-------------------------------------------|
| Default: | 6 |
|----------------+-------------------------------------------|
| Range: | 0 - 15 |
|----------------+-------------------------------------------|
| Unit: | Bit-mapped |
|----------------+-------------------------------------------|
| Description: | Controls V.32 and V.32bis modulations. |
|------------------------------------------------------------|
| Bit | Value | Function |
|----------+-------------+-----------------------------------|
| 0 | » 0 1 | V.32bis enabled. |
| | | |
| | | V.32bis disabled. |
|----------+-------------+-----------------------------------|
| 1 | » 1 | Not used. |
|----------+-------------+-----------------------------------|
| 2 | » 1 | Not used. |
|----------+-------------+-----------------------------------|
| 3 | » 0 1 | V.32 modulation disabled. |
| | | |
| | | V.32 modulation enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.32 HANDSHAKE TIME |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S28=n [cmds] |
|--------------+---------------------------------------------|
| Example: | ATS28=20<CR> |
|--------------+---------------------------------------------|
| Default: | 8 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | .1 second |
|--------------+---------------------------------------------|
| Description: | Sets length of V.32 handshake. |
+------------------------------------------------------------+