U.S. ROBOTICS, INC. SPORTSTER PCMCIA 14.4 Modem Type Data (synchronous/asynchronous)/Fax Maximum Data Rate 14.4Kbps Maximum Fax Rate 14.4Kbps Data Bus External Fax Class Class I & II Data Modulation Protocol Bell 103A/212A ITU-T V.21, V.22, V.22bis, V.23, V.32, V.32bis Fax Modulation Protocol ITU-T V.17, V.21CH2, V.27ter, V.29 Error Correction/Compression MNP5, V.42, V.42bis Proprietary AT Command Set V1253 BIT-MAPPED REGISTER S13 Format AT [cmds] S13=n [cmds] Example: ATS13=139 Default: 0 Range: 0 - 89 Unit: Bit-mapped Description: Controls DTR reset, DTR dialing, reset dialing, and MNP3. Bit Value Function 0 » 0 DTR normal. 1 Reset on low DTR. 1 » 0 Not used. 2 » 0 Not used. 3 » 0 DTR dialing disabled. 1 DTR dialing enabled. 4 » 0 Reset dialing disabled. 1 Reset dialing enabled. 5 » 0 Not used. 6 » 0 MNP 3 enabled. 1 MNP 3 disabled. 7 » 0 Not used. BIT-MAPPED REGISTER S15 Format AT [cmds] S15=n [cmds] Example: ATS15=139 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 Non-error-correcting mode transmit buffer set to 1.5KB. 1 Non-error-correcting mode transmit buffer set to 128 bytes. 4 » 0 MNP 4 enabled. 1 MNP 4 disabled. 5 » 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 » 0 V.21 disabled. 1 V.21 enabled. 1 » 0 V.32 trellis coding disabled. 1 V.32 trellis coding enabled. 2 » 0 V.32 modulation enabled. 1 V.32 modulation disabled. 3 » 0 2100Hz answer tone enabled. 1 2100Hz answer tone disabled. 5, 4 » 00 V.42 detect, LAPM and MNP enabled. 01 V.42 detect and LAPM enabled. 10 MNP enabled. 11 LAPM enabled. 6 » 0 Not used. 7 » 0 Actual result codes displayed. 1 Force 9600 result codes. COMPRESSION AND ERROR CORRECTION Format AT [cmds] S51=n [cmds] Example: ATS51=139 Default: 0 Range: 0 - 7 Unit: Bit-mapped Description: Selects compression and error correction for specific modulations. Bit Value Function 0 » 0 MNP/V.42 disabled during V.22 operation. 1 MNP/V.42 disabled during V.22 operation. 1 » 0 MNP/V.42 disabled during V.22bis operation. 1 MNP/V.42 disabled during V.22bis operation. 2 » 0 MNP/V.42 disabled during V.32bis operation. 1 MNP/V.42 disabled during V.32bis operation. BREAK LENGTH Type: Register Format: AT [cmds] S21=n [cmds] Example: ATS21=20 Default: 10 Range: Unidentified Unit: 10 milliseconds Description: Sets the length of error control mode breaks sent from DCE to DTE. BREAK TYPE Type: Configuration Format: AT [cmds] &Yn [cmds] Example: AT &Y0 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. &Y3 Break does not empty buffer and is sent with transmitted data. CONNECTION SPEED FORCE Type: Configuration Format: AT [cmds] &Nn [cmds] Example: AT &N1 DT555-1212 Description: Sets required connection speed., Command Function » &N0 Variable. &N1 300bps &N2 1200bps &N3 2400bps &N4 4800bps &N5 7200bps &N6 9600bps &N7 12Kbps &N8 14.4Kbps ERROR CORRECTION MODE Type: Configuration Format: AT [cmds] &Mn [cmds] Example: AT &M1 %C1 Description: Selects active error correction protocols. Command Function &M0 Normal mode only. » &M4 Auto-detect mode. &M5 ARQ mode only. ESCAPE CHARACTER RESPONSE Type: Register Format: AT [cmds] S14=n [cmds] Example: ATS14=20 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 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 control 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 » &I0 Software flow control disabled. &I1 XON/XOFF passthrough enabled. &I2 XON/XOFF passthrough disabled. &I3 ENQ/ACK enabled in host mode. &I4 ENQ/ACK enabled in terminal mode. &I5 XON/XOFF passthrough disabled in error correction mode. 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. » &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 ATx help screen. &$ Shows AT&x 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 » &B1 Serial speed locked. &B2 Serial speed locked in ARQ mode only, 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. TONE DIALING TEST Type: Register Format: AT [cmds] S16=n [cmds] Example: ATS16=139 Description: Selects the tone dialing test Command Function » S16=0 Tone dialing test disabled. S16=2 Tone dialing test enabled. V.32 AND V.32bis MODULATIONS Format AT [cmds] S34=n [cmds] Example: ATS34=139 Default: 0 Range: 0 - 9 Unit: Bit-mapped Description: Controls V.32 and V.32bis modulations. Bit Value Function 0 » 0 V.32bis enabled. 1 V.32bis disabled. 1 0 Not used. 2 0 Not used. 3 » 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.