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. |