MAXTECH CORPORATION
S 144PNP (ACER 14.4 TAD-SP 1.XX)
Card Type | Modem, Fax card |
Chip Set | Unidentified |
I/O Options | Line in, line out, microphone in, speaker out |
Maximum Modem Rate | 14.4Kbps |
Maximum Fax Rate | 14.4Kbps |
Data Modulation Protocol | Bell 103/212 ITU-T V.21, V.22, V.22bis, V.32, V.32bis |
Fax Modulation Protocol | ITU-T V.17, V.21, V.27ter, V.29 |
Error Correction/Compression | MNP5, V.42, V.42bis |
Fax Class | Class II |
Data Bus | 8-bit ISA |

CONNECTIONS | ||||||
Function | Label | Function | Label | |||
Line in | CN1 | Microphone/Speaker out | CN3 | |||
Line out | CN2 | Microphone in | CN4 | |||
SUPPORTED COMMAND SET |
Basic AT Commands |
AT, ‘+++’, A/ |
A, E, M, N, O, P, T, V, W, X, Y, Z |
&C, &G, &L, &T, &V, &W, &Y, &Z |
Extended AT Commands |
\C, \G, \Q, \T, \V, \X |
%A |
S Registers |
S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S14, S16, S18, S21, S22, S23, S25, S26, S27, S36, S37, S38, S46, S48, S49, S50, S63, S82, S86, S98 |
Note: See MHI Help File for full command documentation. |
Proprietary AT Command Set
CALLER ID | |
Type: | Configuration |
Format: | AT [cmds] #CC=n [cmds] |
Description: | Controls the Caller ID function |
Command | Function |
#CC=0 | Caller ID disabled |
#CC=1 | Caller ID displays formatted data |
#CC=2 | Caller ID displays raw hexadecimal data |
COMMUNICATIONS MODE | |
Type: | Configuration |
Format: | AT [cmds] &Mn [cmds] |
Description: | Selects communications mode |
Command | Mode |
&M0 | Asynchronous mode |
COMMUNICATIONS MODE | |
Type: | Configuration |
Format: | AT [cmds] &Qn [cmds] |
Description: | Selects communications mode options |
Command | Mode |
&Q0 | Asynchronous mode |
&Q5 | MNP or V.42 mode enabled |
&Q6 | Normal mode enabled |
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 300 or 1200bps |
B1 | Bell 212A at 300 or 1200bps |
B2 | ITU-T V.23 originate calls at 75bps transmitting and 1200bps receiving, answer calls transmitting at 1200bps and receiving at 75bps. |
B3 | ITU-T V.23 originate calls at 1200bps transmitting and 75bps receiving, answer calls transmitting at 75bps and receiving at 1200bps. |
COMPRESSION | |
Type: | Configuration |
Format: | AT [cmds] %Cn [cmds] |
Description: | Selects data compression |
Command | Function |
%C0 | Data compression disabled |
%C1 | MNP5 enabled |
CONNECT MODE | |
Type: | Configuration |
Format: | AT [cmds] \Nn [cmds] |
Description: | Controls the type of connection the modem will operate in |
Command | Function |
\N0 | Normal mode enabled |
\N1 | Direct mode enabled |
\N2 | MNP data link enabled |
\N3 | MNP normal link enabled |
\N4 | V.42 reliable mode enabled |
\N5 | V.42 normal mode enabled |
\N6 | V.42/MNP normal link enabled |
DATA SET READY (DSR) | |
Type: | Configuration |
Format: | AT [cmds] &Sn [cmds] |
Description: | Selects DSR options |
Command | Function |
&S0 | DSR forced high |
&S1 | DSR high only while modem is handshaking or connected |
DATA TERMINAL READY (DTR) | |
Type: | Configuration |
Format: | AT [cmds] &Dn [cmds] |
Description: | Selects modem response to DTR |
Command | Function |
&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 |
DIAL | |
Type: | Immediate |
Format: | AT [cmds] D<#> [cmds] |
Description: | Dials telephone number according to any modifiers included in the string |
Note: | Any combination of modifiers can be used to produce the desired dial functions in sequence. |
Command | Function |
DL | Re-dial last number |
DP | Pulse dialing enabled |
DS=n | Dial stored telephone number n |
DT | Tone dialing enabled/Pulse dialing disabled |
DW | Dialing resumed following dial tone detection |
D, | Dialing paused for amount of time specified in S8 register |
D! | Flash function initiated. Modem commanded to go off-hook for specified time before returning on-hook. |
D@ | Wait for Quite Answer function enabled. Modem waits until a "quiet answer," a ring-back signal followed by silence up to the time specified in S7, is received prior to executing the rest of the dial string. |
D: | Modem returned to idle state after dialing. The colon can only be placed at the end of the dial command. |
D; | Modem returned to idle state after dialing and connection maintained. The semicolon can only be placed at the end of the dial command. |
FACTORY DEFAULT PROFILE | |
Type: | Configuration |
Format: | AT [cmds] &F [cmds] |
Description: | Sets values in active profile to values found in the default profile |
&F0 | Recall factory default configuration |
&F3 | Reset for extended responses |
FLOW CONTROL | |
Type: | Configuration |
Format: | AT [cmds] &Kn [cmds] |
Description: | Enables flow control options |
Command | Function |
&K0 | Flow control disabled |
&K3 | RTS/CTS flow control enabled |
&K4 | XON/XOFF flow control enabled |
&K5 | Transparent XON/XOFF flow control enabled |
PULSE DIALING RATIO | |
Type: | Configuration |
Format: | AT [cmds] &Pn [cmds] |
Description: | Selects pulse dial make/break ratio |
Command | Function |
&P0 | 39/61ms at 10pps (North America) |
&P1 | 33/67ms at 10pps (Europe) |
REPORT INFORMATION | |
Type: | Immediate |
Format: | AT [cmds] In [cmds] |
Description: | Displays information requested |
Command | Function |
I0 | Display 14400 |
I1 | Display 000 |
I2 | Tests and reports ROM checksum |
I3 | Reports firmware revision number |
I4 | Reports configuration settings |
I6 | Reports data connection information |
RESULT CODES | |
Type: | Configuration |
Format: | AT [cmds] Qn [cmds] |
Description: | Enables modem to send result codes to the DTE |
Command | Function |
Q0 | Result code sending enabled |
Q1 | Result code sending disabled |
Q2 | Result code sent in originate mode but not in 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 |
L2 | Medium volume setting |
L3 | Highest volume setting |
SPECIAL ECHO CANCELLER MODE | |
Type: | Configuration |
Format: | AT [cmds] &Nn [cmds] |
Description: | Selects special echo canceller training mode |
Command | Mode |
&N0 | Special echo canceller training sequence disabled |
&N1 | Special echo canceller training sequence enabled |
TRELLIS CODING MODE | |
Type: | Configuration |
Format: | AT [cmds] &Un [cmds] |
Description: | Selects Trellis coding mode |
Command | Mode |
&U0 | Enable Trellis coding at V.32 |
&U1 | Disable Trellis coding at V.32 |
V.42bis - DICTIONARY SIZE | |
Type: | Configuration |
Format: | AT [cmds] %Dn [cmds] |
Description: | Selects V.42bis dictionary size |
Command | Function |
%D0 | Select 512 bytes |
%D1 | Select 1024 bytes |
%D2 | Select 2048 bytes |
VOICE COMMAND SET
ACTIONS/SPEAKERPHONE RESPONSE CODES | |
Type: | Configuration |
Format: | AT [cmds] #VSR=n [cmds] |
Default: | Unidentified |
Range: | Unidentified |
Unit: | Unidentified |
Description: | Enables actions and/or speakerphone response codes. |
AGC SELECTION | |
Type: | Configuration |
Format: | AT [cmds] #VA=-m [cmds] |
Default: | Unidentified |
Range: | Unidentified |
Unit: | Unidentified |
Description: | Enables or disables AGC. |
AUDIO MODE | |
Type: | Configuration |
Format: | AT [cmds] #VZ=n [cmds] |
Default: | Unidentified |
Range: | Unidentified |
Unit: | Unidentified |
Description: | Selects audio mode. |
AUTO-ANSWER MODE | |
Type: | Configuration |
Format: | AT [cmds] #VAA=n [cmds] |
Default: | Unidentified |
Range: | Unidentified |
Unit: | Unidentified |
Description: | Enables or disables auto-answer mode. |
BEEP TONE | |
Type: | Configuration |
Format: | AT [cmds] #VB=fl,t [cmds] |
Default: | Unidentified |
Range: | Unidentified |
Unit: | Unidentified |
Description: | Generates the beep tone (fl=frequency, t=duration). |
BINARY OFFSET | |
Type: | Configuration |
Format: | AT [cmds] #VBO=n [cmds] |
Default: | Unidentified |
Range: | Unidentified |
Unit: | Unidentified |
Description: | Sets the binary offset mode. |
CODEC MODE | |
Type: | Configuration |
Format: | AT [cmds] #VSM=n [cmds] |
Default: | Unidentified |
Range: | Unidentified |
Unit: | Unidentified |
Description: | Sets the CODEC mode to n. |
DISTINCTIVE RING SELECTION | |
Type: | Configuration |
Format: | AT [cmds] #VDR=e,r [cmds] |
Default: | Unidentified |
Range: | Unidentified |
Unit: | Unidentified |
Description: | Enables distinctive ring detection. |
DMA CHANNEL | |
Type: | Configuration |
Format: | AT [cmds] #VCH=n [cmds] |
Default: | Unidentified |
Range: | Unidentified |
Unit: | Unidentified |
Description: | Sets the DMA channel. |
DMA TRANSFER | |
Type: | Configuration |
Format: | AT [cmds] #VBS=n [cmds] |
Default: | Unidentified |
Range: | Unidentified |
Unit: | Unidentified |
Description: | Specifies data transfer via DMA. |
DTMF SELECTION | |
Type: | Configuration |
Format: | AT [cmds] #VC=n [cmds] |
Default: | Unidentified |
Range: | Unidentified |
Unit: | Unidentified |
Description: | Enables, disables, and aborts DTMF. |
DTMF & CNG DETECTION | |
Type: | Configuration |
Format: | AT [cmds] #VTn [cmds] |
Default: | Unidentified |
Range: | Unidentified |
Unit: | Unidentified |
Description: | Controls the command mode DTMF and CNG detection. |
FAX MODE | |
Type: | Configuration |
Format: | AT [cmds] #VNH=n [cmds] |
Default: | Unidentified |
Range: | Unidentified |
Unit: | Unidentified |
Description: | Selects hook behavior for fax and data calls within voice calls. |
FIFO SIZE | |
Type: | Configuration |
Format: | AT [cmds] #VF=n [cmds] |
Default: | Unidentified |
Range: | Unidentified |
Unit: | Unidentified |
Description: | Selects the FIFO size. |
LOOP CURRENT | |
Type: | Configuration |
Format: | AT [cmds] #VTR=n [cmds] |
Default: | Unidentified |
Range: | Unidentified |
Unit: | Unidentified |
Description: | Selects the loop current interrupt qualifier. |
MICROPHONE COMMAND | |
Type: | Configuration |
Format: | AT [cmds] #VM=n [cmds] |
Default: | Unidentified |
Range: | Unidentified |
Unit: | Unidentified |
Description: | Selects microphone settings. |
MONITOR MODE | |
Type: | Configuration |
Format: | AT [cmds] #VSP=n [cmds] |
Default: | Unidentified |
Range: | Unidentified |
Unit: | Unidentified |
Description: | Sets the monitor mode. |
PAGER DIAL MODIFIER | |
Type: | Configuration |
Format: | AT [cmds] :=n [cmds] |
Default: | Unidentified |
Range: | Unidentified |
Unit: | Unidentified |
Description: | Selects pager dial modifier. |
RELAY SELECTION | |
Type: | Configuration |
Format: | AT [cmds] #VH=n [cmds] |
Default: | Unidentified |
Range: | Unidentified |
Unit: | Unidentified |
Description: | Energizes the relay. |
RUN-LENGTH ENCODING | |
Type: | Configuration |
Format: | AT [cmds] #VL=n [cmds] |
Default: | Unidentified |
Range: | Unidentified |
Unit: | Unidentified |
Description: | Sets run-length encoding. |
RINGBACK NEVER CAME | |
Type: | Configuration |
Format: | AT [cmds] #VRN=n [cmds] |
Default: | Unidentified |
Range: | Unidentified |
Unit: | Unidentified |
Description: | Selects ringback never came timer. |
RINGBACK TIMER | |
Type: | Configuration |
Format: | AT [cmds] #VRA=n [cmds] |
Default: | Unidentified |
Range: | Unidentified |
Unit: | Unidentified |
Description: | Selects ringback goes away timer. |
SAMPLE RATE | |
Type: | Configuration |
Format: | AT [cmds] #VSS=n [cmds] |
Default: | Unidentified |
Range: | Unidentified |
Unit: | Unidentified |
Description: | Sets sample rate to n. |
SILENCE DELETION | |
Type: | Configuration |
Format: | AT [cmds] #VSD=n [cmds] |
Default: | Unidentified |
Range: | Unidentified |
Unit: | Unidentified |
Description: | Selects the silence deletion mode. |
VSD=0 | Silence deletion control disabled. |
VSD=1 | Silence deletion control set to 1 second |
VSD=2 | Silence deletion control set to .5 seconds |
SILENCE END | |
Type: | Configuration |
Format: | AT [cmds] #VSI=n [cmds] |
Default: | Unidentified |
Range: | Unidentified |
Unit: | Unidentified |
Description: | Selects silence end of message timer. |
SILENCE THRESHOLD | |
Type: | Configuration |
Format: | AT [cmds] #VST [cmds] |
Default: | Unidentified |
Range: | Unidentified |
Unit: | Unidentified |
Description: | Sets the silence threshold to -43dBM/-47dBM |
SUPERVISION POINT QUALIFIER | |
Type: | Configuration |
Format: | AT [cmds] #VTI=n [cmds] |
Default: | Unidentified |
Range: | Unidentified |
Unit: | Unidentified |
Description: | Selects the supervision point qualifier. |
VOICE BUFFER | |
Type: | Configuration |
Format: | AT [cmds] #VBL=n [cmds] |
Default: | Unidentified |
Range: | Unidentified |
Unit: | Unidentified |
Description: | Sets the voice buffer length control. |
VOICE COMPRESSION MODE | |
Type: | Configuration |
Format: | AT [cmds] #VSC=n [cmds] |
Default: | Unidentified |
Range: | Unidentified |
Unit: | Unidentified |
Description: | Selects the voice compression to n value. |
VOICE DATA MODE | |
Type: | Configuration |
Format: | AT [cmds] #VDn [cmds] |
Default: | Unidentified |
Description: | Selects voice data mode |
#VD0 | Transmit voice data |
#VD1 | Receive voice data |
VOICE DATA CONFIGURATION | |
Type: | Configuration |
Format: | AT [cmds] #VSV [cmds] |
Default: | Unidentified |
Range: | Unidentified |
Unit: | Unidentified |
Description: | Transmits voice data and listens for DTMF and CNG. |
VOICE MODE | |
Type: | Configuration |
Format: | AT [cmds] #VSn [cmds] |
Default: | Unidentified |
Range: | Unidentified |
Unit: | Unidentified |
Description: | Activates voice mode with DTE rate of n. |
VOICE RECORD MODE | |
Type: | Configuration |
Format: | AT [cmds] #VG=n [cmds] |
Default: | Unidentified |
Range: | Unidentified |
Unit: | Unidentified |
Description: | Selects gain setting in voice record mode. |