3COM CORPORATION ================ US ROBOTICS 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 +------------------------------------------------------------+ | 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 | |-------------------------------+----------------------------| | i DTR normal | Off | |-------------------------------+----------------------------| | DTR forced high | On | +------------------------------------------------------------+ +------------------------------------------------------------+ | RESULT CODES | |------------------------------------------------------------| | Setting | SW1/2 | |-------------------------------+----------------------------| | i Verbal result codes enabled | Off | |-------------------------------+----------------------------| | Numeric result codes enabled | On | +------------------------------------------------------------+ +------------------------------------------------------------+ | RESULT CODES DISPLAY | |------------------------------------------------------------| | Setting | SW1/3 | |-------------------------------+----------------------------| | i Enabled | On | |-------------------------------+----------------------------| | Disabled | Off | +------------------------------------------------------------+ +------------------------------------------------------------+ | ECHO DISPLAY | |------------------------------------------------------------| | Setting | SW1/4 | |-------------------------------+----------------------------| | i Enabled | Off | |-------------------------------+----------------------------| | Disabled | On | +------------------------------------------------------------+ +------------------------------------------------------------+ | AUTO ANSWER | |------------------------------------------------------------| | Setting | SW1/5 | |-------------------------------+----------------------------| | i Disabled | On | |-------------------------------+----------------------------| | Enabled | Off | +------------------------------------------------------------+ +------------------------------------------------------------+ | CARRIER DETECT | |------------------------------------------------------------| | Setting | SW1/6 | |-------------------------------+----------------------------| | i CD normal | Off | |-------------------------------+----------------------------| | CD forced high | On | +------------------------------------------------------------+ +------------------------------------------------------------+ | SOFTWARE RESET | |------------------------------------------------------------| | Setting | SW1/7 | |-------------------------------+----------------------------| | i 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 | |-----------------+------------------------------------------| | Default: | 0 | |-----------------+------------------------------------------| | Range: | 0 - 89 | |-----------------+------------------------------------------| | Unit: | Bit-mapped | |-----------------+------------------------------------------| | Description: | Controls DTR reset, DTR dialing, reset | | | dialing, and MNP3. | |------------------------------------------------------------| | Bit | Value | Function | |-----------+--------------+---------------------------------| | 0 | i 0 | DTR normal. | | | | | | | 1 | Reset on low DTR. | |-----------+--------------+---------------------------------| | 1 | i 0 | Not used. | |-----------+--------------+---------------------------------| | 2 | i 0 | Not used. | |-----------+--------------+---------------------------------| | 3 | i 0 | DTR dialing disabled. | | | | | | | 1 | DTR dialing enabled. | |-----------+--------------+---------------------------------| | 4 | i 0 | Reset dialing disabled. | | | | | | | 1 | Reset dialing enabled. | |-----------+--------------+---------------------------------| | 5 | i 0 | Not used. | |-----------+--------------+---------------------------------| | 6 | i 0 | MNP 3 enabled. | | | | | | | 1 | MNP 3 disabled. | |-----------+--------------+---------------------------------| | 7 | i 0 | Not used. | +------------------------------------------------------------+ +------------------------------------------------------------+ | BIT-MAPPED REGISTER S15 | |------------------------------------------------------------| | Format: | AT [cmds] S15=n [cmds] | |-----------------+------------------------------------------| | Example: | ATS15=13 | |-----------------+------------------------------------------| | Default: | 0 | |-----------------+------------------------------------------| | Range: | 0 - 56 | |-----------------+------------------------------------------| | Unit: | Bit-mapped | |-----------------+------------------------------------------| | Description: | Controls non-error-correcting mode | | | buffer, MNP4, and BS/DEL switch. | |------------------------------------------------------------| | Bit | Value | Function | |-----------+-------+----------------------------------------| | 0 | i 0 | Not used. | |-----------+-------+----------------------------------------| | 1 | i 0 | Not used. | |-----------+-------+----------------------------------------| | 2 | i 0 | Not used. | |-----------+-------+----------------------------------------| | 3 | i 0 | Non-error-correcting mode transmit | | | | buffer set to 1.5KB. | | | 1 | | | | | Non-error-correcting mode transmit | | | | buffer set to 128 bytes. | |-----------+-------+----------------------------------------| | 4 | i 0 | MNP 4 enabled. | | | | | | | 1 | MNP 4 disabled. | |-----------+-------+----------------------------------------| | 5 | i 0 | Use backspace key for delete disabled. | | | | | | | 1 | Use backspace key for delete enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | BIT-MAPPED REGISTER S27 | |------------------------------------------------------------| | Format: | AT [cmds] S27=n [cmds] | |-----------------+------------------------------------------| | Example: | ATS27=139 | |-----------------+------------------------------------------| | 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 | i 0 | V.21 disabled. | | | | | | | 1 | V.21 enabled. | |-----------+--------+---------------------------------------| | 1 | i 0 | V.32 trellis coding disabled. | | | | | | | 1 | V.32 trellis coding enabled. | |-----------+--------+---------------------------------------| | 2 | i 0 | V.32 modulation enabled. | | | | | | | 1 | V.32 modulation disabled. | |-----------+--------+---------------------------------------| | 3 | i 0 | 2100Hz answer tone enabled. | | | | | | | 1 | 2100Hz answer tone disabled. | |-----------+--------+---------------------------------------| | 5, 4 | i 00 | V.42 detect, LAPM and MNP enabled. | | | | | | | 01 | V.42 detect and LAPM enabled. | | | | | | | 10 | MNP enabled. | | | | | | | 11 | LAPM enabled. | |-----------+--------+---------------------------------------| | 6 | i 0 | Not used. | |-----------+--------+---------------------------------------| | 7 | i 0 | Actual result codes displayed. | | | | | | | 1 | Force 9600 result codes. | +------------------------------------------------------------+ +------------------------------------------------------------+ | COMPRESSION AND ERROR CORRECTION | |------------------------------------------------------------| | Format: | AT [cmds] S51=n [cmds] | |----------------+-------------------------------------------| | Example: | ATS51=3 | |----------------+-------------------------------------------| | Default: | 0 | |----------------+-------------------------------------------| | Range: | 0 - 7 | |----------------+-------------------------------------------| | Unit: | Bit-mapped | |----------------+-------------------------------------------| | Description: | Selects compression and error correction | | | for specific modulations. | |------------------------------------------------------------| | Bit | Value | Function | |----------+-------+-----------------------------------------| | 0 | i 0 | MNP/V.42 enabled during V.22 operation. | | | | | | | 1 | MNP/V.42 disabled during V.22 | | | | operation. | |----------+-------+-----------------------------------------| | 1 | i 0 | MNP/V.42 enabled during V.22bis | | | | operation. | | | 1 | | | | | MNP/V.42 disabled during V.22bis | | | | operation. | |----------+-------+-----------------------------------------| | 2 | i 0 | MNP/V.42 enabled during V.32bis | | | | operation. | | | 1 | | | | | MNP/V.42 disabled during V.32bis | | | | operation. | +------------------------------------------------------------+ +------------------------------------------------------------+ | BIT-MAPPED REGISTER S56 | |------------------------------------------------------------| | Format: | AT [cmds] S56=n [cmds] | |-----------------+------------------------------------------| | Example: | ATS56=139 | |-----------------+------------------------------------------| | 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 | i 0 | Non linearing coding enabled. | | | | | | | 1 | Non linearing coding disabled. | |-----------+----------+-------------------------------------| | 1 | i 0 | TX level deviation enabled. | | | | | | | 1 | TX level deviation disabled. | |-----------+----------+-------------------------------------| | 2 | i 0 | Pre-emphasis enabled. | | | | | | | 1 | Pre-emphasis disabled. | |-----------+----------+-------------------------------------| | 3 | i 0 | Pre-coding enabled. | | | | | | | 1 | Pre-coding disabled. | |-----------+----------+-------------------------------------| | 4 | i 0 | Shaping enabled. | | | | | | | 1 | Shaping disabled. | |-----------+----------+-------------------------------------| | 5 | i 0 | Not used. | |-----------+----------+-------------------------------------| | 6 | i 0 | V.34 enabled. | | | | | | | 1 | V.34 disabled. | |-----------+----------+-------------------------------------| | 7 | i 0 | V.FC enabled. | | | | | | | 1 | V.FC disabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | BREAK LENGTH | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S21=n [cmds] | |--------------+---------------------------------------------| | Example: | ATS21=20 | |--------------+---------------------------------------------| | 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 | |--------------+---------------------------------------------| | Description: | Configures action of break signal. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | &Y0 | Break empties buffer. | |--------------+---------------------------------------------| | i &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 | |--------------+---------------------------------------------| | Description: | Sets required connection speed if &U is set | | | to 0. Otherwise, sets fastest allowed | | | connection speed. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | i &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 | |--------------+---------------------------------------------| | Description: | Sets slowest allowed connection speed if &N | | | is set to 1 or higher. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | i &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 | |--------------+---------------------------------------------| | Description: | Selects active error-control protocols. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | &M0 | Normal mode, error control disabled. | |--------------+---------------------------------------------| | i &M4 | Normal/ARQ. | |--------------+---------------------------------------------| | &M5 | ARQ mode. | +------------------------------------------------------------+ +------------------------------------------------------------+ | ESCAPE CHARACTER RESPONSE | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S14=n [cmds] | |--------------+---------------------------------------------| | Example: | ATS14=0 | |--------------+---------------------------------------------| | Default: | 0 | |--------------+---------------------------------------------| | Description: | Controls reaction to escape character. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | i 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 | |--------------+---------------------------------------------| | Description: | Selects extended result codes. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | &A0 | Extended result codes disabled. | |--------------+---------------------------------------------| | &A1 | ARQ result codes enabled. | |--------------+---------------------------------------------| | &A2 | V.32 result code enabled. | |--------------+---------------------------------------------| | i &A3 | Error correction and compression result | | | codes enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | FLOW CONTROL CHARACTER - XON | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S22=n [cmds] | |--------------+---------------------------------------------| | Example: | ATS22=20 | |--------------+---------------------------------------------| | 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 | |--------------+---------------------------------------------| | 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 | |--------------+---------------------------------------------| | Description: | Allows modem to act on, then transmit | | | XON/XOFF characters. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | i &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 | |--------------+---------------------------------------------| | Description: | Sets type of flow control used by modem. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | &H0 | Flow control disabled. | |--------------+---------------------------------------------| | i &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 $ | |--------------+---------------------------------------------| | Example: | AT &$ | |--------------+---------------------------------------------| | 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 | |--------------+---------------------------------------------| | 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 | |--------------+---------------------------------------------| | Description: | Sets operation of serial port speed. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | &B0 | Serial speed follows connect speed. | |--------------+---------------------------------------------| | i &B1 | Serial speed locked. | |--------------+---------------------------------------------| | &B2 | Serial speed locked in ARQ mode only. | +------------------------------------------------------------+ +------------------------------------------------------------+ | MAPPING | |------------------------------------------------------------| | Format: | AT [cmds] S55=n [cmds] | |----------------+-------------------------------------------| | Example: | ATS55=13 | |----------------+-------------------------------------------| | Default: | 0 | |----------------+-------------------------------------------| | Range: | 0 - 15 | |----------------+-------------------------------------------| | Unit: | Bit-mapped | |----------------+-------------------------------------------| | Description: | Controls mapping. | |------------------------------------------------------------| | Bit | Value | Function | |----------+--------+----------------------------------------| | 0 | i 0 | 8S-2D map enabled. | | | | | | | 1 | 8S-2D map disabled. | |----------+--------+----------------------------------------| | 1 | i 0 | 16S-4D map enabled. | | | | | | | 1 | 16S-4D map disabled. | |----------+--------+----------------------------------------| | 2 | i 0 | 32S-2D map enabled. | | | | | | | 1 | 32S-2D map disabled. | |----------+--------+----------------------------------------| | 3 | i 0 | 64S-4D map enabled. | | | | | | | 1 | 64S-4D map disabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | REPORT INFORMATION | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] In [cmds] | |--------------+---------------------------------------------| | Example: | AT I1 O | |--------------+---------------------------------------------| | 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 | |-----------------+------------------------------------------| | Default: | 0 | |-----------------+------------------------------------------| | Range: | 0 - 255 | |-----------------+------------------------------------------| | Unit: | Bit-mapped | |-----------------+------------------------------------------| | Description: | Controls baud rate. | |------------------------------------------------------------| | Bit | Value | Function | |-----------+--------+---------------------------------------| | 0 | i 0 | 2400 baud rate enabled. | | | | | | | 1 | 2400 baud rate disabled. | |-----------+--------+---------------------------------------| | 1 | i 0 | 2743 baud rate enabled. | | | | | | | 1 | 2743 baud rate disabled. | |-----------+--------+---------------------------------------| | 2 | i 0 | 2800 baud rate enabled. | | | | | | | 1 | 2800 baud rate disabled. | |-----------+--------+---------------------------------------| | 3 | i 0 | 3000 baud rate enabled. | | | | | | | 1 | 3000 baud rate disabled. | |-----------+--------+---------------------------------------| | 4 | i 0 | 3200 baud rate enabled. | | | | | | | 1 | 3200 baud rate disabled. | |-----------+--------+---------------------------------------| | 5 | i 0 | 3429 baud rate enabled. | | | | | | | 1 | 3429 baud rate disabled. | |-----------+--------+---------------------------------------| | 6 | i 0 | Call indicate during V.34 operation | | | | enabled. | | | 1 | | | | | Call indicate during V.34 operation | | | | disabled. | |-----------+--------+---------------------------------------| | 7 | i 0 | V.8 during V.34 operation enabled. | | | | | | | 1 | V.8 during V.34 operation disabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | TONE DIALING TEST | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S16=n [cmds] | |--------------+---------------------------------------------| | Example: | ATS16=1 | |--------------+---------------------------------------------| | Description: | Selects the tone dialing test | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | i 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 | |----------------+-------------------------------------------| | Default: | 6 | |----------------+-------------------------------------------| | Range: | 0 - 15 | |----------------+-------------------------------------------| | Unit: | Bit-mapped | |----------------+-------------------------------------------| | Description: | Controls V.32 and V.32bis modulations. | |------------------------------------------------------------| | Bit | Value | Function | |----------+-------------+-----------------------------------| | 0 | i 0 | V.32bis enabled. | | | | | | | 1 | V.32bis disabled. | |----------+-------------+-----------------------------------| | 1 | i 1 | Not used. | |----------+-------------+-----------------------------------| | 2 | i 1 | Not used. | |----------+-------------+-----------------------------------| | 3 | i 0 | V.32 modulation disabled. | | | | | | | 1 | V.32 modulation enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | V.32 HANDSHAKE TIME | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S28=n [cmds] | |--------------+---------------------------------------------| | Example: | ATS28=20 | |--------------+---------------------------------------------| | Default: | 8 | |--------------+---------------------------------------------| | Range: | 0-255 | |--------------+---------------------------------------------| | Unit: | .1 second | |--------------+---------------------------------------------| | Description: | Sets length of V.32 handshake. | +------------------------------------------------------------+