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  | 

| 
 CONNECTIONS  | |||
| 
 Purpose  | 
 Location  | 
 Purpose  | 
 Location  | 
| 
 Line in  | 
 CN1  | 
 Compaq portable bus  | 
 CN3  | 
| 
 Daughterboard connector for network  | 
 CN2  | ||
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 <CR> | 
| 
 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 <CR> | |||
| 
 Description:  | 
 Configures action of break signal.  | |||
| 
 Command  | 
 Break from DTE  | 
 Break from DTE while in command mode  | 
 Break from remote modem  | |
| 
 í \K0 | 
 Enter command mode, do not send break to remote modem.  | 
 Buffers cleared and break sent to remote modem.  | 
 Buffers cleared and break sent to DTE.  | |
| 
 í \K1 | 
 Buffers cleared and break sent to remote modem.  | 
 Buffers cleared and break sent to remote modem.  | 
 Buffers cleared and break sent to DTE.  | |
| 
 í \K2 | 
 Enter command mode, do not send break to remote modem.  | 
 Send break to remote modem immediately.  | 
 Send break to DTE immediately.  | |
| 
 í \K3 | 
 Send break to remote modem immediately.  | 
 Send break to remote modem immediately.  | 
 Send break to DTE immediately.  | |
| 
 í \K4 | 
 Enter command mode, do not send break to remote modem.  | 
 Send break to remote modem with transmitted data.  | 
 Send break to remote modem with transmitted data.  | |
| » \K5 | 
 Send break with transmitted data.  | 
 Send break to remote modem with transmitted data.  | 
 Send break to remote modem with transmitted data.  | |
| 
 COMPRESSION  | |
| 
 Type:  | 
 Configuration  | 
| 
 Format:  | 
 AT %Cn  | 
| 
 Example:  | 
 AT %C1 &B0 <CR> | 
| 
 Description:  | 
 Selects data compression.  | 
| 
 í Command | 
 Function  | 
| 
 í %C0 | 
 Data compression disabled.  | 
| 
 í %C1 | 
 MNP5 enabled.  | 
| 
 í %C2 | 
 V.42bis enabled.  | 
| » %C3 | 
 MNP5 and V.42bis enabled.  | 
| 
 CONNECT MODE  | |
| 
 Type:  | 
 Configuration  | 
| 
 Format:  | 
 AT [cmds] \Nn [cmds]  | 
| 
 Example:  | 
 AT \N1 DT555-1212 <CR> | 
| 
 Description:  | 
 Sets connect mode.  | 
| 
 í Command | 
 Function  | 
| 
 í \N0 | 
 Normal mode enabled.  | 
| 
 í \N1 | 
 Direct mode enabled.  | 
| 
 í \N2 | 
 Reliable mode enabled.  | 
| » \N3 | 
 Auto-reliable mode enabled.  | 
| 
 í \N4 | 
 LAPM mode enabled.  | 
| 
 í \N5 | 
 MNP mode enabled.  | 
| 
 FALL FORWARD/ADJUST TRANSMIT LEVEL  | |
| 
 Type:  | 
 Configuration  | 
| 
 Format:  | 
 AT [cmds] -Un [cmds]  | 
| 
 Example:  | 
 AT -U1 &W <CR> | 
| 
 Description:  | 
 Forces a fall forward and change in transmit level during fall forward  | 
| 
 í 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 <CR> | 
| 
 Description:  | 
 Forces fallback to 1200bps at -10dBm  | 
| 
 FLOW CONTROL CHARACTER - XOFF  | |
| 
 Type:  | 
 Register  | 
| 
 Format:  | 
 AT [cmds] S33=n [cmds]  | 
| 
 Example:  | 
 ATS33=20 <CR> | 
| 
 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 <CR> | 
| 
 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 <CR> | 
| 
 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 <CR> | 
| 
 Range:  | 
 9-43  | 
| 
 Unit:  | 
 -1dB  | 
| 
 Description:  | 
 Returns received line signal level.  | 
| 
 MNP10 COMPRESSION  | |
| 
 Type:  | 
 Configuration  | 
| 
 Format:  | 
 AT [cmds] -Kn [cmds]  | 
| 
 Example:  | 
 AT %C1 -K1 <CR> | 
| 
 Description:  | 
 Selects MNP10 data compression.  | 
| 
 í Command | 
 Function  | 
| 
 í -K0 | 
 MNP10 disabled.  | 
| » -K1 | 
 MNP10 enabled.  | 
| 
 MNP10 LINK NEGOTIATION  | |
| 
 Type:  | 
 Configuration  | 
| 
 Format:  | 
 AT [cmds] *Hn [cmds]  | 
| 
 Example:  | 
 AT *H0 -Q1 <CR> | 
| 
 Description:  | 
 Sets the speed at which MNP10 link negotiation will occur.  | 
| 
 í Command | 
 Function  | 
| » *H0 | 
 Link will be negotiated at highest possible speed.  | 
| 
 í *H1 | 
 Link will be negotiated at 1200bps.  | 
| 
 MNP10 POWER LEVEL ADJUST  | |
| 
 Type:  | 
 Configuration  | 
| 
 Format:  | 
 AT [cmds] )Mn [cmds]  | 
| 
 Example:  | 
 AT )M1 %C1 <CR> | 
| 
 Description:  | 
 Controls automatic transmit power level adjustment during MNP 10 link negotiation.  | 
| 
 í Command | 
 Function  | 
| » )M0 | 
 Power level adjustment disabled.  | 
| 
 í )M1 | 
 Power level adjustment enabled.  | 
| 
 PROTOCOL/SPEED  | |
| 
 Format  | 
 AT [cmds] S37=n [cmds]  | 
| 
 Example:  | 
 ATS37=11 <CR> | 
| 
 Default:  | 
 0  | 
| 
 Range:  | 
 0-21  | 
| 
 Unit:  | 
 Bit-mapped.  | 
| 
 Description:  | 
 Selects protocol and line speed.  | 
| 
 í 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 <CR> | 
| 
 Description:  | 
 Reports signal quality.  | 
| 
 SLEEP TIMER  | |
| 
 Format  | 
 AT [cmds] S24=n [cmds]  | 
| 
 Example:  | 
 ATS24=40 <CR> | 
| 
 Default:  | 
 1  | 
| 
 Range:  | 
 0 - 255  | 
| 
 Unit:  | 
 10 second  | 
| 
 Description:  | 
 Maximum duration of DTE and DCE inactivity allowed prior to initiating low-power sleep mode.  |