OSITECH COMMUNICATIONS, INC. LAPTALK PLUS 14.4K Modem Type Data (synchronous/asynchronous)/Fax Maximum Data Rate 14.4Kbps Maximum Fax Rate 14.4Kbps Data Bus Compaq portable bus 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, MNP10, V.42, V.42bis [Image] CONNECTIONS Purpose Location Purpose Location Line in CN1 Compaq portable CN3 bus Daughterboard CN2 connector for network Proprietary AT Command Set BIT-MAPPED REGISTERS Register Default S14 138 S16 0 S21 4 S22 118 S23 55 S27 9 S28 0 S31 194 S39 3 S40 107 S41 03 BREAK SEND Type: Configuration Format: AT [cmds] \Bn [cmds] Example: AT \B3 &W Default: 3 Range: 0-9 Unit: .1 second Description: Sends break to modem. BREAK TYPE Type: Configuration Format: AT [cmds] \Kn [cmds] Example: AT \K1 Description: Configures action of break signal. Command Break from DTE Break from DTE Break from remote while in command modem mode \K0 Enter command Buffers cleared Buffers cleared mode, do not and break sent to and break sent to send break to remote modem. DTE. remote modem. \K1 Buffers cleared Buffers cleared Buffers cleared and break sent and break sent to and break sent to to remote modem. remote modem. DTE. \K2 Enter command Send break to Send break to DTE mode, do not remote modem immediately. send break to immediately. remote modem. \K3 Send break to Send break to Send break to DTE remote modem remote modem immediately. immediately. immediately. \K4 Enter command Send break to Send break to mode, do not remote modem with remote modem with send break to transmitted data. transmitted data. remote modem. » \K5 Send break with Send break to Send break to transmitted remote modem with remote modem with data. transmitted data. transmitted data. COMPRESSION Type: Configuration Format: AT %Cn Example: AT %C1 &B0 Description: Selects data compression. Command Function %C0 Data compression disabled. %C1 MNP5 enabled. %C2 V.42bis enabled. » %C3 MNP5 and V.42bis enabled. CONNECT MODE Type: Configuration Format: AT [cmds] \Nn [cmds] Example: AT \N1 DT555-1212 Description: Sets connect mode. Command Function \N0 Normal mode enabled. \N1 Direct mode enabled. \N2 Reliable mode enabled. » \N3 Auto-reliable mode enabled. \N4 LAPM mode enabled. \N5 MNP mode enabled. FALL FORWARD/ADJUST TRANSMIT LEVEL Type: Configuration Format: AT [cmds] -Un [cmds] Example: AT -U1 &W Description: Forces a fall forward and change in transmit level during fall forward Command Function -U0 Automatic attenuation to -10dBm -U1 Automatic attenuation down to -18dBm -U2 Automatic attenuation down to22dBm -U3 automatic attenuation down to -25dBm -U4 At 2400bps, force transmit level to -10 dBm -U5 At 2400bps, force transmit level to -18 dBm -U6 At 2400bps, force transmit level to -22 dBm -U7 At 2400bps, force transmit level to -25 dBm FALLBACK Type: Immediate Format: AT [cmds] -B [cmds] Example: AT -B &W Description: Forces fallback to 1200bps at -10dBm FLOW CONTROL CHARACTER - XOFF Type: Register Format: AT [cmds] S33=n [cmds] Example: ATS33=20 Default: 19 Range: 0-255 Unit: ASCII Description: Sets the character used to represent XOFF. FLOW CONTROL CHARACTER - XON Type: Register Format: AT [cmds] S32=n [cmds] Example: ATS32=20 Default: 17 Range: 0-255 Unit: ASCII Description: Sets the character used to represent XON. LEASED LINE TRANSMISSION LEVEL Type: Configuration Format: AT [cmds] S99=n [cmds] Example: AT S99=8 Default: 10 Range: 0 to 15 Unit: -1 dBm Description: Sets the signal level for transmission when in leased-line mode. LINE SIGNAL LEVEL Type: Immediate Format: AT [cmds] %L [cmds] Example: AT %L &W Range: 9-43 Unit: -1dB Description: Returns received line signal level. MNP10 COMPRESSION Type: Configuration Format: AT [cmds] -Kn [cmds] Example: AT %C1 -K1 Description: Selects MNP10 data compression. Command Function -K0 MNP10 disabled. » -K1 MNP10 enabled. MNP10 LINK NEGOTIATION Type: Configuration Format: AT [cmds] *Hn [cmds] Example: AT *H0 -Q1 Description: Sets the speed at which MNP10 link negotiation will occur. Command Function » *H0 Link will be negotiated at highest possible speed. *H1 Link will be negotiated at 1200bps. MNP10 POWER LEVEL ADJUST Type: Configuration Format: AT [cmds] )Mn [cmds] Example: AT )M1 %C1 Description: Controls automatic transmit power level adjustment during MNP 10 link negotiation. Command Function » )M0 Power level adjustment disabled. )M1 Power level adjustment enabled. PROTOCOL/SPEED Format AT [cmds] S37=n [cmds] Example: ATS37=11 Default: 0 Range: 0-21 Unit: Bit-mapped. Description: Selects protocol and line speed. Command Function » S37=0 Auto-select fastest common protocol. S37=1 Connect at 300bps S37=2 Connect at 300bps S37=3 Connect at 300bps. S37=4 Not used. S37=5 Connect at 1200bps V.22. S37=6 Connect at 2400bps.V.22bis S37=7 Connect at 75/1200bps.V.32 S37=8 Connect at 4800bps V.32bis/V.32. S37=9 Connect at 9600bps V.32bis/V.32 S37=10 Connect at 12Kbps V.32bis S37=11 Connect at 14.4Kbps V.32bis S37=12 Connect at V.32bis 7200bps REPORT SIGNAL QUALITY Type: Configuration Format: AT [cmds] %Q [cmds] Example: AT %Q &W Description: Reports signal quality. SLEEP TIMER Format AT [cmds] S24=n [cmds] Example: ATS24=40 Default: 1 Range: 0 - 255 Unit: 10 second Description: Maximum duration of DTE and DCE inactivity allowed prior to initiating low-power sleep mode.