PRACTICAL PERIPHERALS, INC.
PC144LCD
|
Card Type |
Modem (asynchronous) |
|
Chip Set |
Unidentified |
|
Maximum Modem Rate |
14.4Kbps |
|
Maximum Fax Rate |
14.4Kbps |
|
Data Modulation Protocol |
Bell 103/212A ITU-T V.32bis, V.32, V.22, V.21 |
|
Fax Modulation Protocol |
ITU-T V.17, V.27ter, V.29 |
|
Error Correction/Compression |
MNP5, V.42, V.42bis |
|
Fax Class Data Bus |
Class I & II External |
54790
|
DIAGNOSTIC LED(S) | |||
|
LED |
Color |
Status |
Condition |
|
AA |
Unidentified |
On |
Auto-answer enabled |
|
AA |
Unidentified |
Off |
Auto-answer disabled |
|
AA |
Unidentified |
Blinking |
Phone is ringing |
|
RX |
Unidentified |
On |
Modem is receiving data |
|
RX |
Unidentified |
Off |
Modem is not receiving data |
|
TX |
Unidentified |
On |
Modem is transmitting data |
|
TX |
Unidentified |
Off |
Modem is not transmitting data |
|
CD |
Unidentified |
On |
Carrier signal detected |
|
CD |
Unidentified |
Off |
Carrier signal not detected |
|
OH |
Unidentified |
On |
Modem is off-hook |
|
OH |
Unidentified |
Off |
Modem is on-hook |
|
RS |
Unidentified |
On |
Modem is ready to send data |
|
RS |
Unidentified |
Off |
Modem is not ready to send data |
|
TR |
Unidentified |
On |
DTR signal is high |
|
TR |
Unidentified |
Off |
DTR signal is low |
|
EC |
Unidentified |
On |
Error correction enabled |
|
EC |
Unidentified |
Off |
Error correction disabled |
|
CS |
Unidentified |
On |
Modem is clear to send data |
|
CS |
Unidentified |
Off |
Modem is not clear to send data |
|
MR |
Unidentified |
On |
Power is on |
|
MR |
Unidentified |
Off |
Power is off |
|
SUPPORTED COMMAND SET |
|
Basic AT Commands |
|
AT, +++, A/ |
|
A, D, E, H, M, V, W, X, Y, Z |
|
&A, &B, &F, &L, &R, &S, &T, &V, &W, &Y, &Z |
|
S Registers |
|
S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S18, S25, S26, S30, S36, S37, S38, S46, |
|
S48, S82, S86, S95, S108, S109, S110 |
|
Note: See MHI Help File for full command documentation. |
Proprietary AT Command Set
|
AUTO-MODE DETECTION | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] Nn [cmds] |
|
Description: |
Selects various options for the automatic detection and negotiation of protocols during the handshake process if the modem is communicating with a remote modem of dissimilar speed. |
|
Command |
Function |
|
N0 |
Auto-mode detection disabled |
|
í N1 |
In originate mode, handshake begins at line speed designated by the S37 register. Modem can shift to a slower speed if necessary. In answer mode, handshake attempted with the following protocols in order - V.FC, V.32bis, V.32, V.22bis, V.22 or Bell 212, V.21, and Bell 103 |
|
CLOCK SOURCE - SYNCHRONOUS TRANSMIT | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] &Xn [cmds] |
|
Description: |
Selects DTE transmit clock source |
|
Command |
Function |
|
&X2 |
Modem generates clock from the receive carrier signal |
|
COMMUNICATION PROTOCOLS | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] Bn [cmds] |
|
Description: |
Selects the communication protocol for data calls |
Note: The B command allows the simultaneous selection of more than one suffix, enabling multiple protocols. | |
|
Command |
Protocol |
|
B0 |
ITU-T V.22 at 1200bps |
|
B1 |
Bell 212A at 300 or 1200bps |
|
B2 |
ITU-T V.23 at 75/1200bps |
|
B3 |
ITU-T V.23 at 1200/75bps |
|
B15 |
ITU-T V.21 at 300bps |
|
B16 |
Bell 103 at 300bps |
|
COMMUNICATIONS MODE | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] &Mn [cmds] |
|
Description: |
Selects communications mode |
|
Command |
Mode |
|
í &M0 |
Asynchronous mode |
|
COMMUNICATIONS MODE | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] &Qn [cmds] |
|
Description: |
Selects communications mode options |
|
Command |
Mode |
|
í &Q0 |
Asynchronous mode, serial port speed follows connect speed. |
|
&Q1 |
Synchronous mode 1 |
|
&Q2 |
Synchronous mode 2 |
|
&Q3 |
Synchronous mode 3 |
|
&Q3 |
Hayes AutoSync mode |
|
&Q5 |
Error correction mode |
|
&Q6 |
Buffered asynchronous mode |
|
&Q8 |
MNP operational mode |
|
&Q9 |
Conditional data compression |
|
DATA CARRIER DETECT (DCD) | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] &Cn [cmds] |
|
Description: |
Selects whether the DCD option is enabled or disabled |
|
Command |
Function |
|
í &C0 |
DCD enabled |
|
&C1 |
DCD enabled after carrier signal detected |
|
&C2 |
DCD signal on except during disconnect |
|
DATA TERMINAL READY (DTR) | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] &Dn [cmds] |
|
Description: |
Selects modem response to DTR |
Note: The action each variant of &D causes depends on the setting of &Q | |
|
Command |
Function |
|
í &D0 |
Modem does not respond to DTR |
|
&D1 |
Modem goes to command mode after DTR goes is off |
|
&D2 |
Modem goes to command mode and disconnects (hangs up) after DTR goes off; Auto-Answer is disabled. |
|
&D3 |
Modem is initialized after DTR goes off |
|
FLOW CONTROL | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] &Kn [cmds] |
|
Description: |
Enables flow control options |
|
Command |
Function |
|
&K0 |
Flow control disabled |
|
&K1 |
RTS to CTS flow control enabled |
|
&K2 |
XON/XOFF flow control enabled |
|
í &K3 |
RTS/CTS flow control enabled |
|
&K4 |
XON/XOFF flow control enabled |
|
&K5 |
Transparent XON/XOFF flow control enabled |
|
&K6 |
RTS/CTS flow control with pass through enabled |
|
&K7 |
RTS/CTS flow control with XON/XOFF DCE to DCE enabled |
|
GUARD TONE | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] &Gn [cmds] |
|
Description: |
Commands the modem to transmit a guard tone in V.22/V.22bis |
Note: Used primarily for international data transmission | |
|
Command |
Function |
|
í &G0 |
Guard tone disabled |
|
HELP | |
|
Type: |
Immediate |
|
Format: |
AT [cmds] $H |
|
Description: |
Accesses summary of the modems commands |
|
ON-LINE | |
|
Type: |
Immediate |
|
Format: |
AT [cmds] On [cmds] |
|
Description: |
Controls on-line command (data transmission) state options. |
Note: The O command must be placed at the end of the command string. | |
|
Command |
Function |
|
O0 |
On-line command mode with no retraining enabled |
|
O1 |
On-line command mode with retraining enabled |
|
O2 |
On-line command mode and initiate rate negotiation |
|
REPORT INFORMATION | |
|
Type: |
Immediate |
|
Format: |
AT [cmds] In [cmds] |
|
Description: |
Displays information requested |
|
Command |
Function |
|
I0 |
Reports modem model and speed |
|
I1 |
Reports ROM checksum |
|
I2 |
Perform ROM checksum, returns OK or ERROR |
|
I3 |
Reports firmware revision number |
|
I4 |
Reports modem feature availability |
|
I6 |
Reports link statistics |
|
RESULT CODES | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] Qn [cmds] |
|
Description: |
Enables modem to send result codes to the DTE |
|
Command |
Function |
|
í Q0 |
Result code sending enabled |
|
Q1 |
Result code sending disabled |
|
Q2 |
Modem returns result codes when originating a call, but does not return result codes from the answer mode. |
|
SPEAKER VOLUME | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] Ln [cmds] |
|
Description: |
Controls speaker volume |
|
Command |
Function |
|
L0 |
Low volume setting |
|
L1 |
Low volume setting |
|
í L2 |
Medium volume setting |
|
L3 |
Highest volume setting |
|
TRELLIS CODE MODULATION | |
|
Type: |
Immediate |
|
Format: |
AT [cmds] &U [cmds] |
|
Description: |
Controls trellis encoding |
|
Command |
Function |
|
&U0 |
Enables trellis encoding |
|
&U1 |
Disables trellis encoding |
S(status) -REGISTERS
|
BUFFER LOWER LIMIT | ||
|
Type: |
Register | |
|
Format: |
AT [cmds] S49=n [cmds] | |
|
Range: |
1-249 | |
|
Default: |
64 | |
|
Unit: |
bytes | |
|
Description: |
Sets the lower limit of the buffer | |
|
BUFFER UPPER LIMIT | ||
|
Type: |
Register | |
|
Format: |
AT [cmds] S50=n [cmds] | |
|
Range: |
2-250 | |
|
Default: |
bytes | |
|
Unit: |
220 | |
|
Description: |
Sets the upper limit of the buffer | |
|
DCE SPEED | |
|
Type: |
Register |
|
Format |
AT [cmds] S43? [cmds] |
|
Description: |
Displays the DCE speed of the current connection |
|
PACKET SIZE | |
|
Type: |
Register |
|
Format |
AT [cmds] S136=n [cmds] |
|
Range: |
0-2 |
|
Unit: |
frame size |
|
Description: |
Designates the LAP-M packet size |
|
PRIVATE CIRCUIT CARRIER LEVEL | |
|
Type: |
Register |
|
Format |
AT [cmds] S63=n [cmds] |
|
Range: |
0-15 |
|
Units: |
-dBm |
|
Description: |
Controls the carrier power level in dBm for leased line operation. |
|
PROBE TIMING | |
|
Type: |
Register |
|
Format: |
AT [cmds] S97=n [cmds] |
|
Range: |
15-70 |
|
Unit: |
0.1 sec |
|
Description: |
Sets the duration of the signal used by the modem in answer mode during a V.32 automode handshake to determine if the calling modem is a V.22 or V.22bis type modem |
|
RING SETTINGS | |
|
Type: |
Register |
|
Format: |
AT [cmds] S101=n [cmds] |
|
Range: |
0-255 |
|
Unit: |
bit map |
|
Description: |
Sets the distinctive ring setting |