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# 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 MNP5, V.42, V.42bis
Correction/Compression
Fax Class Class I & II
Data Bus Serial
IMG IMG 1
+------------------------------------------------------------+
| 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. |
+------------------------------------------------------------+