MULTI-TECH SYSTEMS, INC.
MT2834ZPW
|
Card Type |
Modem |
|
Chip Set |
Unidentified |
|
I/O Options |
Line in, line out, microphone in, speaker out |
|
Maximum Modem Rate |
33.6Kbps |
|
Maximum Fax Rate |
14.4Kbps |
|
Data Modulation Protocol |
Bell 103/212A ITU-T V.22, V.22bis, V.32ter, V.32bis, V.34 |
|
Fax Modulation Protocol |
ITU-T V.17, V.27ter, V.29 |
|
Error Correction/Compression |
MNP5, V.42, V.42bis |
|
Fax Class |
Class I |
|
Data Bus |
16-bit ISA |
|
CONNECTIONS | ||||||
|
Function |
Label |
Function |
Label | |||
|
Line out (RJ-11) |
CN1 |
Speaker out |
CN3 | |||
|
Line in (RJ-11) |
CN2 |
Microphone in |
CN4 | |||
|
SUPPORTED COMMAND SET |
|
Basic AT Commands |
|
AT, ‘+++’, A/ |
|
A, C, E, F, H, M, Q, W, Y |
|
&C, &F, &G, &V, &Z |
|
Extended AT Commands |
|
\V |
|
Special Commands |
|
-C |
|
S Registers |
|
S0, S1, S2, S3, S4, S5, S10 |
|
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 |
In originate mode, handshake begins at line speed designated by the S37 register and the B command |
|
í N1 |
In originate mode, handshake begins at line speed designated by the S37 register. and the B command Modem can shift to a slower speed if necessary. |
|
AUXILLARY RELAY CONTROL | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] &J [cmds] |
|
Description: |
Controls auxiliary relay |
|
Command |
Function |
|
&J0 |
Auxiliary relay remains open |
|
COMMUNICATION PROTOCOLS | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] Bn [cmds] |
|
Description: |
Selects the communication protocol for data calls |
|
Command |
Protocol |
|
B0 |
Modem will use ITU-T V.22 at 1200bps. |
|
B1 |
Modem will use Bell 212A at 1200bps. |
|
B2 |
ITU-T V.23 reverse channel disabled |
|
B3 |
ITU-T V.23 reverse channel disabled |
|
B15 |
Modem will use ITU-T V.21 at 300bps. |
|
B16 |
Modem will use Bell 103J at 300bps. |
|
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, serial port speed follows connect speed. |
|
í &Q5 |
Error correction mode |
|
&Q6 |
Buffered asynchronous mode |
|
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 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 |
|
í &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 |
|
DSn |
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 quiet 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 semicolon can only be placed at the end of the dial command. |
|
DV |
Switch to speakerphone |
|
D^ |
Data calling tone transmission disabled |
|
FLOW CONTROL | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] &Kn [cmds] |
|
Description: |
Enables flow control options |
|
Command |
Function |
|
&K0 |
Flow control disabled |
|
í &K3 |
RTS/CTS flow control enabled |
|
&K4 |
XON/XOFF flow control enabled |
|
ON-LINE | |
|
Type: |
Immediate |
|
Format: |
AT [cmds] On |
|
Description: |
Instructs the modem to return to on-line state. |
|
Command |
Function |
|
O0 |
Return to on-line state. |
|
O1 |
Return to on-line state and initiate retrain sequence. |
|
O3 |
Return to on-line state and initiate renegotiation sequence. |
|
REPORT INFORMATION | |
|
Type: |
Immediate |
|
Format: |
AT [cmds] In [cmds] |
|
Description: |
Displays information requested |
|
Command |
Function |
|
I0 |
Reports default speed and controller firmware code |
|
I1 |
Reports ROM checksum |
|
I2 |
Tests and reports ROM checksum |
|
I3 |
Reports default speed and controller firmware code |
|
I4 |
Reports data pump model and revision code |
|
I9 |
Reports country code |
|
RESTORE PROFILE ON POWER-UP | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] &Yn [cmds] |
|
Description: |
Restores a selected profile into the active profile on power-up (hard reset) |
|
Command |
Function |
|
&Y0 |
Restore profile 0 on power-up |
|
SELECT CALL PROGRESS RESULT CODES | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] Xn [cmds] |
|
Description: |
Enables selection of tone detection and associated result code format options |
|
Command |
Function |
|
X0 |
Busy and dial tone detection disabled; basic result codes enabled. |
|
X1 |
Busy and dial tone detection disabled; extended result codes enabled. |
|
X2 |
Busy tone detection disabled, dial tone detection enabled; extended result codes enabled. |
|
X3 |
Busy tone detection enabled, dial tone detection disabled; extended result codes enabled. |
|
í X4 |
Busy and dial tone detection disabled; extended result codes enabled. |
|
X5 |
Busy and dial tone detection disabled; extended result codes enabled. |
|
X6 |
Busy and dial tone detection disabled; extended result codes enabled. |
|
X7 |
Busy and dial tone detection disabled; basic result codes enabled. |
|
SOFT RESET | |
|
Type: |
Immediate |
|
Format: |
AT [cmds] Zn [cmds] |
|
Description: |
Restores modem profiles previously saved in non-volatile RAM using the &W command. |
|
Command |
Function |
|
Z0 |
Restore modem to profile saved by last &W command |
|
Z1 |
Restore modem to profile saved by last &W command |
|
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 |
|
STORE ACTIVE PROFILE | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] &Wn [cmds] |
|
Description: |
Writes the values for the active profile into the non-volatile RAM |
|
Command |
Function |
|
&W0 |
Write the active profile to NVRAM |
|
TEST MODES | |
|
Type: |
Immediate |
|
Format: |
AT [cmds] &Tn |
|
Description: |
Selects test options |
|
Command |
Function |
|
&T0 |
End current test |
|
&T1 |
Begin local analog loopback test |
|
&T3 |
Begin local digital loopback |
|
&T6 |
Request remote digital loopback |
|
V.32 - AUTO-RETRAIN | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] &Bn [cmds] |
|
Description: |
Controls auto-retrain function if poor line quality is detected |
|
Command |
Function |
|
&B1 |
Auto-retrain enabled if line quality is poor |
Extended AT Commands
|
BREAK TYPE | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] \Kn [cmds] |
|
Description: |
Configures action of break signal |
|
Command |
Function |
|
\K5 |
Sends break received from DTE to the remote modem |
|
COMPRESSION | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] %Cn [cmds] |
|
Description: |
Selects data compression |
|
Command |
Function |
|
%C0 |
Data compression disabled |
|
%C1 |
V.42bis/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 reliable mode enabled |
|
í \N3 |
V.42/MNP auto-reliable mode enabled |
|
\N4 |
V.42 reliable mode enabled |
|
\N5 |
V.42/MNP auto-reliable mode enabled |
|
\N7 |
V.42/MNP auto-reliable mode enabled |
|
DISPLAY BLACKLIST NUMBERS | |
|
Type: |
Immediate |
|
Format: |
AT [cmds] %B [cmds] |
|
Description: |
Displays the list of all the numbers on the blacklist. Returns ERROR if blacklisting is disabled. |
|
FLOW CONTROL | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] \Gn [cmds] |
|
Description: |
Command nonfunctional; for compatibility purposes only |
|
Command |
Function |
|
\G0 |
Returns OK for backward compatibility |
|
FLOW CONTROL TYPE | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] \Qn [cmds] |
|
Description: |
Sets type of flow control used by modem |
|
Command |
Function |
|
\Q0 |
Flow control disabled |
|
\Q1 |
Bi-directional XON/XOFF flow control enabled |
|
í \Q3 |
Bi-directional RTS/CTS flow control enabled |
|
INACTIVITY TIMER | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] \Tn [cmds] |
|
Description: |
Disables the inactivity timer |
|
Command |
Function |
|
\T0 |
Inactivity timer disabled |
|
LOCK SERIAL PORT | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] \Jn [cmds] |
|
Description: |
Sets operation of serial port speed |
|
Command |
Function |
|
\J0 |
Serial speed locked |
|
XON/XOFF PASS-THROUGH | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] \Xn [cmds] |
|
Description: |
Selects whether XON/XOFF signals are sent to remote modem |
|
Command |
Function |
|
\X0 |
XON/XOFF signals trapped by local modem |
Special Commands
|
ASYNCHRONOUS WORD LENGTH | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] +ES=n [cmds] |
|
Description: |
Allows an H.324 video application direct access to the synchronous data channel. +ES=? Shows allowable value (6) +ES? Queries setting |
|
Command |
Function |
|
+ES=6 |
Allows an H.324 video application direct access to the synchronous data channel |
|
SPEAKER CODEC LOOPBACK | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] &&S [cmds] |
|
Description: |
Provides a loopback from the microphone to the speaker. |
|
Note: |
For testing and debugginh purposes only |
S(STATUS) -REGISTERS
|
DCE LINE SPEED | |
|
Type: |
Register |
|
Format |
AT [cmds] S37=n [cmds] |
|
Description: |
Sets the maximum allowable data exchange rate attempted during handshake process. |
|
Command |
Function |
|
S37=0 |
Maximum speed |
|
S37=1 |
Reserved |
|
S37=2 |
1200/75bps |
|
S37=3 |
300bps |
|
S37=4 |
Reserved |
|
S37=5 |
1200bps |
|
S37=6 |
2400bps |
|
S37=7 |
4800bps |
|
S37=8 |
7200bps |
|
S37=9 |
9600bps |
|
S37=10 |
12.0Kbps |
|
S37=11 |
14.4Kbps |
|
S37=12 |
16.8Kbps |
|
S37=13 |
19.2Kbps |
|
S37=14 |
21.6Kbps |
|
S37=15 |
24.0Kbps |
|
S37=16 |
26.4Kbps |
|
S37=17 |
28.8Kbps |
|
S37=18 |
31.2Kbps |
|
S37=19 |
33.6Kbps |
|
DIALING DELAY | |
|
Type: |
Register |
|
Format |
AT [cmds] S6=n [cmds] |
|
Range: |
2-65 |
|
Unit: |
1 second |
|
Description: |
Duration of delay after modem goes off-hook and before dialing |
|
INACTIVITY TIMER | |
|
Type: |
Register |
|
Format: |
AT [cmds] S89=n [cmds] |
|
Range: |
0, 5-255 |
|
Default: |
10 |
|
Unit: |
1 second |
|
Description: |
Sets the length of time that the modem does not receive information before it disconnects; S89=0 will disable. |
|
NO CARRIER TIME-OUT | |
|
Type: |
Register |
|
Format |
AT [cmds] S7=n [cmds] |
|
Range: |
1-255 |
|
Unit: |
1 second |
|
Description: |
Maximum wait time the modem uses after dialing to detect a carrier signal from the remote modem for both originating and answering calls. |
|
PAUSE DURATION | |
|
Type: |
Register |
|
Format |
AT [cmds] S8=n [cmds] |
|
Range: |
0-65 |
|
Unit: |
1 second |
|
Description: |
Duration of pause per comma (,) command used in a command or dial string |
|
TONE PULSE DURATION | |
|
Type: |
Register |
|
Format |
AT [cmds] S11=n [cmds] |
|
Range: |
50-150 |
|
Unit: |
1 ms |
|
Description: |
DTMF tone pulse duration and time between tone pulses for tone dialing operations. |
|
V.25 CALLING TONE | |
|
Type: |
Register |
|
Format |
AT [cmds] S35=n [cmds] |
|
Range: |
0-1 |
|
Unit: |
Decimal |
|
Description: |
Enables V.25 data calling tone, which allows remote data/fax/voice discrimination |
Note: S35=0 disables V.25 data calling tone. | |
|
V.34 MODULATION | |
|
Type: |
Register |
|
Format |
AT [cmds] S28=n [cmds] |
|
Range: |
0-255 |
|
Unit: |
Decimal |
|
Description: |
Enables V.34 modulation |
Note: S28=0 disables V.34 modulation. | |
|
V32bis STARTUP MODE | |
|
Type: |
Register |
|
Format |
AT [cmds] S43=n [cmds] |
|
Range: |
0-1 |
|
Unit: |
Decimal |
|
Description: |
Enables V.32bis start-up auto mode operation |
Note: S43=0 disables V.32bis start-up auto mode. For testing purposes only. | |
|
V32bis, V.22bis AUTO RATE | |
|
Type: |
Register |
|
Format |
AT [cmds] S42=n [cmds] |
|
Range: |
0-1 |
|
Unit: |
Decimal |
|
Description: |
Enables V.32bis and V.22bis auto rate |
Note: S42=0 disables V.32bis and V.22bis auto rate. For testing purposes only. | |