MULTI-TECH SYSTEMS, INC.
MT5634ZDXV
Card Type | Modem (asynchronous) |
Chipset | Unidentified |
I/O Options | Voice, speakerphone |
Maximum Data Rate | 56Kbps |
Maximum Fax Rate | 14.4Kbps |
Data Modulation | Bell 103J, 113, 212A ITU-T V.21, V.22, V.22bis, V.23, V.32, V.32bis, V.34 AT&T V.32terbo Rockwell K56flex |
Fax Modulation | ITU-T V.17, V.27ter, V.29 |
Error Correction/Compression | MNP5, V.42, V.42bis |
Fax Class | Class I & II |
Data Bus | Serial |

CONNECTIONS | |||
Function | Label | Function | Label |
Telephone line out | CN1 | Serial port | CN3 |
Telephone line in | CN2 | DC power in | CN4 |
DIAGNOSTIC LED(S) | |||
LED | Color | Status | Condition |
TD | Unidentified | On | Modem is transmitting data |
TD | Unidentified | Off | Modem is not transmitting data |
RD | Unidentified | On | Modem is receiving data |
RD | Unidentified | Off | Modem is not receiving data |
CD | Unidentified | On | Carrier signal detected |
CD | Unidentified | Off | Carrier signal not detected |
56 | Unidentified | On | Modem connected with the K56flex protocol |
56 | Unidentified | Off | Modem not connected with the K56flex protocol |
28 | Unidentified | On | Modem connected with the V.34 protocol |
28 | Unidentified | Off | Modem not connected with the V.34 protocol |
14 | Unidentified | On | Modem connected with the V.32bis protocol |
14 | Unidentified | Off | Modem not connected with the V.32bis protocol |
DIAGNOSTIC LED(S) (CON'T) | |||
LED | Color | Status | Condition |
OH | Unidentified | On | Modem is off-hook |
OH | Unidentified | Off | Modem is on-hook |
TR | Unidentified | On | DTR signal is high |
TR | Unidentified | Off | DTR signal is low |
EC | Unidentified | On | Error correction enabled |
EC | Unidentified | Blinking | Error correction activated |
EC | Unidentified | Off | Error correction disabled |
FX | Unidentified | On | Modem is connected in FAX mode |
FX | Unidentified | Off | Modem is not connected in FAX mode |
SUPPORTED STANDARD COMMANDS |
Basic AT Commands |
+++, ‘comma’, A/ |
A, E, H, L, M, N, O, Q, V, Z |
&C, &D, &F, &G, &K, &Q, &S, &T, &V, &W, &Z |
Extended AT Commands |
\G, \J, \N, \Q, \V, \X |
%C |
S-Registers |
S0, S1, S2, S3, S4, S5, S6, S7, S8, S10, S11, S30, S36, S48 |
Note: See MHI help file for complete information. |
IS-101 COMMANDS |
Note: The functions of the IS-101 commands are unidentified. |
Proprietary AT Command Set
DIAL | |
Type: | Immediate |
Format: | AT [cmds] D <#>;[cmds] |
Description: | Dials the telephone number indicated according to any modifiers included in the string. |
Command | Function |
DL | Re-dial last number. |
DP | Pulse dialing enabled. |
DS=n | Dial stored telephone number n. |
DT | Tone dialing enabled. |
DV | Dial the number specified in speakerphone mode. |
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$ | Wait for prompt tone detection function enabled. Waits for prompt tone for amount of time specified by the S7 command. |
D^ | Calling tone disabled for this call. |
D; | Modem returned to idle state after dialing. The semicolon can only be placed at the end of the dial command. |
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. |
DISPLAY INFORMATION | |
Type: | Immediate |
Format: | AT [cmds] In [cmds] |
Description: | Displays information requested about the modem. |
Command | Function |
I0 | Displays default speed and firmware revision. |
I1 | Displays ROM checksum. |
I2 | Tests and displays ROM checksum result. |
I3 | Displays default speed and firmware revision. |
I4 | Displays data pump version. |
I9 | Displays country code. |
MAXIMUM LINE SPEED | |
Type: | Register |
Format: | AT [cmds] S37=n [cmds] |
Description: | Sets the maximum speed the modem will attempt to connect at. |
Command | Function |
í S37=0 | No maximum speed. |
S37=2 | Maximum connect speed set to 1200/75bps. |
S37=3 | Maximum connect speed set to 300bps. |
S37=5 | Maximum connect speed set to 1200bps. |
S37=6 | Maximum connect speed set to 2400bps. |
S37=7 | Maximum connect speed set to 4800bps. |
S37=8 | Maximum connect speed set to 7200bps. |
S37=9 | Maximum connect speed set to 9600bps. |
S37=10 | Maximum connect speed set to 12Kbps. |
S37=11 | Maximum connect speed set to 14.4Kbps. |
S37=12 | Maximum connect speed set to 16.8Kbps. |
S37=13 | Maximum connect speed set to 19.2Kbps. |
S37=14 | Maximum connect speed set to 21.6Kbps. |
S37=15 | Maximum connect speed set to 24Kbps. |
S37=16 | Maximum connect speed set to 26.4Kbps. |
S37=17 | Maximum connect speed set to 28.8Kbps. |
S37=18 | Maximum connect speed set to 31.2Kbps. |
S37=19 | Maximum connect speed set to 33.6Kbps. |
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. |
PROTOCOL/SPEED | |
Type: | Configuration |
Format: | AT [cmds] Bn [cmds] |
Description: | Selects the communication protocol the modem will use. |
Command | Protocol |
B0 | Modem will use ITU-T V.22 at 1200bps. |
B1 | Modem will use Bell 212A at 1200bps. |
B2 | Modem will use ITU-T V.23 at 1200/75bps. |
B3 | Modem will use ITU-T V.23 at 75/1200bps. |
B15 | Modem will use ITU-T V.21 at 300bps. |
B16 | Modem will use Bell 103J at 300bps. |
RETRAIN MODE | |
Type: | Register |
Format: | AT [cmds] S42=n [cmds] |
Description: | Selects whether the modem is allowed to perform retrains and fall-forward/fallback sequences. |
Command | Function |
S42=0 | Retrain and fall-forward/fallback sequences disabled. |
í S42=1 | Retrain and fall-forward/fallback sequences enabled. |
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 only 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 enabled; extended result codes enabled. |
X5 | Busy and dial tone detection enabled; extended result codes enabled. |
X6 | Busy and dial tone detection enabled; extended result codes enabled. |
X7 | Busy and dial tone detection enabled; basic result codes only enabled. |
STANDBY TIMER | |
Type: | Register |
Format | AT [cmds] S89=n [cmds] |
Default: | 10 |
Range: | 0, 5 - 255 |
Unit: | 1 second |
Description: | Maximum duration of command mode inactivity allowed prior to the modem entering standby mode. A value of 0 disables this feature, and values of 1 through 4 set S89=5. |
V.25 CALLING TONE | |
Type: | Configuration |
Format: | AT [cmds] -Cn [cmds] |
Description: | Selects whether the modem will transmit a V.25 calling tone. |
Command | Function |
í -C0 | V.25 calling tone disabled. |
-C1 | V.25 calling tone enabled. |
V.25 CALLING TONE | |
Type: | Register |
Format: | AT [cmds] S35=n [cmds] |
Description: | Selects whether the modem will transmit a V.25 calling tone. |
Command | Function |
í S35=0 | V.25 calling tone disabled. |
S35=1 | V.25 calling tone enabled. |
V.32bis TRAIN MODE | |
Type: | Register |
Format: | AT [cmds] S43=n [cmds] |
Description: | Selects whether the modem will perform a rate training sequence after connecting to the remote modem in V.32bis mode. |
Command | Function |
S43=0 | Rate training sequence enabled. |
í S43=1 | Rate training sequence disabled. |
V.34 MODE | |
Type: | Register |
Format: | AT [cmds] S28=n [cmds] |
Description: | Selects whether the modem will attempt to connect with the V.34 modulation. |
Note: | All values greater than 1 are equivalent to S28=1. |
Command | Function |
S28=0 | V.34 modulation disabled. |
í S28=1 | V.34 modulation enabled. |
VOICE LOOPBACK | |
Type: | Immediate |
Format: | AT [cmds] &&S [cmds] |
Description: | Begins a loopback test for the microphone and speaker. |