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# MICROCOM, INC.
OFFICEPORTE VOICE
Card Type Modem (asynchronous)
Chipset Rockwell
Maximum Onboard Memory 32KB RAM
I/O Options Microphone, microphone in, speaker out,
voice, speakerphone, SVD
Maximum Data Rate 33.6Kbps
Maximum Fax Rate 14.4Kbps
Data Modulation Bell 103A, 212A
ITU-T V.21, V.22, V.22bis, V.23, V.32,
V.32bis, V.34
Rockwell V.FC
Fax Modulation ITU-T V.17, V.27ter, V.29
Error MNP5, MNP10EC, V.42, V.42bis
Correction/Compression
Fax Class Class I & II
Data Bus Serial
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|------------------------+-------+-------------------+-------|
| Speaker out | CN1 | Serial port | CN5 |
|------------------------+-------+-------------------+-------|
| Microphone in | CN2 | DC power in | CN6 |
|------------------------+-------+-------------------+-------|
| Telephone line out | CN3 | Microphone | MIC |
|------------------------+-------+-------------------+-------|
| Telephone line in | CN4 | Power switch | SW1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAGNOSTIC LED(S) |
|------------------------------------------------------------|
| LED | Color | Status | Condition |
|------+--------------+----------+---------------------------|
| PWR | Unidentified | On | Power is on |
|------+--------------+----------+---------------------------|
| PWR | Unidentified | Blinking | Modem failed NVRAM, RAM, |
| | | | ROM, or data pump |
| | | | power-up test |
|------+--------------+----------+---------------------------|
| PWR | Unidentified | Off | Power is off |
|------+--------------+----------+---------------------------|
| TR | Unidentified | On | DTR signal is high |
|------+--------------+----------+---------------------------|
| TR | Unidentified | Off | DTR signal is low |
|------+--------------+----------+---------------------------|
| OH | Unidentified | On | Modem is off-hook |
|------+--------------+----------+---------------------------|
| OH | Unidentified | Off | Modem is on-hook |
|------+--------------+----------+---------------------------|
| CD | Unidentified | On | Carrier signal detected |
|------+--------------+----------+---------------------------|
| CD | Unidentified | Off | Carrier signal not |
| | | | detected |
|------+--------------+----------+---------------------------|
| DATA | Unidentified | On | Modem is transmitting or |
| | | | receiving data |
|------+--------------+----------+---------------------------|
| DATA | Unidentified | Off | Modem is not transmitting |
| | | | or receiving data |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SUPPORTED STANDARD COMMANDS |
|------------------------------------------------------------|
| Basic AT Commands |
|------------------------------------------------------------|
| +++, A/ |
|------------------------------------------------------------|
| A, B, E, H, L, M, N, O, P, Q, T, V, W, X, Y, Z |
|------------------------------------------------------------|
| &C, &D, &F, &G, &K, &Q, &S, &T, &V, &W, &Y, &Z |
|------------------------------------------------------------|
| Extended AT Commands |
|------------------------------------------------------------|
| \A, \B, \G, \K, \L, \N, \V |
|------------------------------------------------------------|
| %C, %L, %Q |
|------------------------------------------------------------|
| Special AT Commands |
|------------------------------------------------------------|
| -K, +MS, -Q |
|------------------------------------------------------------|
| S-Registers |
|------------------------------------------------------------|
| S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, |
| S14, S16, S18, S21, S22, S23, S25, S27 |
|------------------------------------------------------------|
| S29, S30, S31, S32, S33, S36, S38, S39, S46, S48, S82, |
| S86, S95, S201 |
|------------------------------------------------------------|
| Note: See MHI help file for complete information. |
+------------------------------------------------------------+
Proprietary AT Command Set
+------------------------------------------------------------+
| AUTO-RETRAIN - AUTO-FALLBACK/FALL-FORWARD |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %En [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls auto-retrain mode and |
| | fallback/fall-forward. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %E0 | Auto-retrain disabled. |
|--------------+---------------------------------------------|
| %E1 | Auto-retrain enabled. |
|--------------+---------------------------------------------|
| í %E2 | Auto-fallback/fall-forward enabled. |
|--------------+---------------------------------------------|
| %E3 | Auto-retrain enabled; modem disconnects |
| | when EQM reaches disconnect threshold. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S40 |
|------------------------------------------------------------|
| Format | AT [cmds] S40=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 105 |
|--------------+---------------------------------------------|
| Range: | 0 - 238 |
|--------------+---------------------------------------------|
| Description: | Controls power level, break handling, |
| | MNP10, and MNP block size. |
|--------------+---------------------------------------------|
| Bit | Value | Function |
|------+-------+---------------------------------------------|
| 1, 0 | 00 | MNP10 disabled. |
| | | |
| | í 01 | MNP10 enabled. |
| | | |
| | 10 | MNP extended services enabled without |
| | | indicating MNP on the answer detection |
| | | phase. |
|------+-------+---------------------------------------------|
| 2 | í 0 | Power level adjustment enabled. |
| | | |
| | 1 | Power level adjustment disabled. |
|------+-------+---------------------------------------------|
| 5, | 000 | \K0 set. |
| 4, 3 | | |
| | 001 | \K1 set. |
| | | |
| | 010 | \K2 set. |
| | | |
| | 011 | \K3 set. |
| | | |
| | 100 | \K4 set. |
| | | |
| | í 101 | \K5 set. |
|------+-------+---------------------------------------------|
| 7, 6 | 00 | MNP block size is 64 characters. |
| | | |
| | í 01 | MNP block size is 128 characters. |
| | | |
| | 10 | MNP block size is 192 characters. |
| | | |
| | 11 | MNP block size is 256 characters. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S41 |
|------------------------------------------------------------|
| Format | AT [cmds] S41=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 155 |
|--------------+---------------------------------------------|
| Range: | 0 - 219 |
|--------------+---------------------------------------------|
| Description: | Selects compression, auto-retrain and |
| | auto-fallback/fall-forward, modem-to-modem |
| | flow control, MNP mode, and low-speed |
| | MNP10. |
|--------------+---------------------------------------------|
| Note: | Be aware that bit 6 is out of order. |
|--------------+---------------------------------------------|
| Bit | Value | Function |
|------+-------+---------------------------------------------|
| 1, 0 | 00 | Data compression disabled. |
| | | |
| | 01 | MNP5 enabled. |
| | | |
| | 10 | V.42bis enabled. |
| | | |
| | í 11 | MNP5 and V.42bis enabled. |
|------+-------+---------------------------------------------|
| 6, 2 | í 00 | Auto-retrain disabled. |
| | | |
| | 01 | Auto-retrain enabled. |
| | | |
| | 10 | Auto-fallback/fall-forward enabled. |
| | | |
| | 11 | Auto-retrain enabled; modem disconnects |
| | | when EQM reaches disconnect threshold. |
|------+-------+---------------------------------------------|
| 3 | í 0 | Modem-to-modem flow control disabled. |
| | | |
| | 1 | Modem-to-modem flow control enabled. |
|------+-------+---------------------------------------------|
| 4 | í 0 | MNP stream mode enabled. |
| | | |
| | 1 | MNP block mode enabled. |
|------+-------+---------------------------------------------|
| 5 | 0 | Not used. |
|------+-------+---------------------------------------------|
| 7 | 0 | MNP10 at 2400 and 1200bps disabled. |
| | | |
| | í 1 | MNP10 at 2400 and 1200bps enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MNP10 - LINK NEGOTIATION |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S28=n [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets the speed at which MNP10 link |
| | negotiation will occur. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í S28=0 | Link will be negotiated at highest possible |
| | speed. |
|--------------+---------------------------------------------|
| S28=64 | Link will be negotiated at 1200bps. |
|--------------+---------------------------------------------|
| S28=128 | Link will be negotiated at 4800bps. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAL |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] D<#>;[cmds] |
|--------------+---------------------------------------------|
| Description: | Dials the telephone number indicated |
| | according to any modifiers included in the |
| | string.1 |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| DL | Re-dial last number. |
|--------------+---------------------------------------------|
| DP | Pulse dialing enabled. |
|--------------+---------------------------------------------|
| DS=n | Dial stored telephone number n. |
|--------------+---------------------------------------------|
| DT | Tone dialing enabled. |
|--------------+---------------------------------------------|
| DW | Dialing resumed following dial tone |
| | detection. |
|--------------+---------------------------------------------|
| D, | Dialing paused for amount of time specified |
| | in S8 register. |
|--------------+---------------------------------------------|
| D"WXY" | Optional method of denoting telephone |
| | numbers. Letters enclosed in quotes are |
| | interpreted as numbers according to the |
| | system found on a telephone keypad. |
|--------------+---------------------------------------------|
| 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^ | Disables the calling tone for this call. |
|--------------+---------------------------------------------|
| D& | Wait for prompt tone detection function |
| | enabled. Waits for prompt tone for amount |
| | of time specified by the S7 command. |
|--------------+---------------------------------------------|
| D; | Modem returned to idle state after dialing. |
| | The semicolon can only be placed at the end |
| | of the dial command. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DISPLAY INFORMATION |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] In [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays information requested about the |
| | modem. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| I1 | Performs a checksum on the firmware ROM and |
| | displays the result. |
|--------------+---------------------------------------------|
| I2 | Performs a checksum on the firmware ROM and |
| | displays the result as either OK or ERROR. |
|--------------+---------------------------------------------|
| I3 | Displays firmware revision and information. |
|--------------+---------------------------------------------|
| I4 | Displays feature bitmap. |
|--------------+---------------------------------------------|
| I5 | Displays country code. |
|--------------+---------------------------------------------|
| I6 | Displays data pump and CEP model and |
| | revision. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DISTINCTIVE RING |
|------------------------------------------------------------|
| Format: | AT [cmds] -SDR=n [cmds] |
|----------------+-------------------------------------------|
| Default: | Unidentified |
|----------------+-------------------------------------------|
| Range: | 0 - 7 |
|----------------+-------------------------------------------|
| Description: | Selects which distinctive ring signals |
| | the modem will respond to. |
|------------------------------------------------------------|
| Bit | Value | Function |
|---------+-------+------------------------------------------|
| 0 | 0 | Do not respond to distinctive ring type |
| | | 1. |
| | 1 | |
| | | Respond to distinctive ring type 1. |
|------------------------------------------------------------|
| 1 | 0 | Do not respond to distinctive ring type |
| | | 2. |
| | 1 | |
| | | Respond to distinctive ring type 2. |
|-------------+----+-----------------------------------------|
| 2 | 0 | Do not respond to distinctive ring type |
| | | 3. |
| | 1 | |
| | | Respond to distinctive ring type 3. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LINE SPEED |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S37=n [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets the maximum allowable data exchange |
| | rate attempted during the handshaking |
| | process. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í S37=0 | Attempt to connect at fastest common speed. |
|--------------+---------------------------------------------|
| S37=1 | Set speed to 300bps. |
|--------------+---------------------------------------------|
| S37=2 | Set speed to 300bps. |
|--------------+---------------------------------------------|
| S37=3 | Set speed to 300bps. |
|--------------+---------------------------------------------|
| S37=4 | Attempt to connect with V.23. |
|--------------+---------------------------------------------|
| S37=5 | Set speed to 1200bps. |
|--------------+---------------------------------------------|
| S37=6 | Set speed to 2400bps. |
|--------------+---------------------------------------------|
| S37=8 | Set speed to 4800bps. |
|--------------+---------------------------------------------|
| S37=9 | Set speed to 9600bps. |
|--------------+---------------------------------------------|
| S37=10 | Set speed to 12Kbps. |
|--------------+---------------------------------------------|
| S37=11 | Set speed to 14.4Kbps. |
|--------------+---------------------------------------------|
| S37=12 | Set speed to 7200bps. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MODE SELECTION |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] #CLS=n [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects which mode the modem will operate |
| | in. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| #CLS=0 | Modem will operate in data mode. |
|--------------+---------------------------------------------|
| #CLS=1 | Modem will operate in fax class I mode. |
|--------------+---------------------------------------------|
| #CLS=2 | Modem will operate in fax class II mode. |
|--------------+---------------------------------------------|
| #CLS=8 | Modem will operate in voice mode. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MNP10EC MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] -SEC=n[,a] [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects whether the modem will attempt to |
| | use MNP10EC mode during the handshaking |
| | sequence. |
|------------------------------------------------------------|
| Command | Function |
|---------------+--------------------------------------------|
| -SEC=0 | MNP10EC handshaking disabled unless a V.34 |
| | connection is attempted via a cellular |
| | line. |
|---------------+--------------------------------------------|
| í -SEC=1,a | Default: | 10 |
|---------------+--------------+-----------------------------|
| | Range: | 0 - 30 |
|---------------+--------------+-----------------------------|
| | Unit: | -1 dBm |
|---------------+--------------+-----------------------------|
| | Description: | MNP10EC handshaking enabled |
| | | and the transmit level is |
| | | set to a. If the a option |
| | | is not specified then the |
| | | transmit level will be set |
| | | to the default. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PULSE DIALING TYPE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] *Zn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects the type of pulse dialing the modem |
| | will use. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í *Z0 | Pulse dialing type 0 used. |
|--------------+---------------------------------------------|
| *Z1 | Pulse dialing type 1 used. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SPEAKERPHONE OPTIONS |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] #SPK=x,y,z [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets various options for speakerphone |
| | functions. |
|------------------------------------------------------------|
| Command | Function |
|---------------+--------------------------------------------|
| x=0 | Microphone disabled. |
|---------------+--------------------------------------------|
| x=1 | Microphone enabled. |
|---------------+--------------------------------------------|
| x=2 | Microphone enabled with maximum gain, |
| | speaker disabled. |
|---------------+--------------------------------------------|
| y | Default: | 5 |
|---------------+--------------+-----------------------------|
| | Range: | 0 - 16 |
|---------------+--------------+-----------------------------|
| | Unit: | -2 dBm |
|---------------+--------------+-----------------------------|
| | Description: | Sets the attenuation level |
| | | for speaker output in voice |
| | | mode. A value of 16 will |
| | | mute the speaker. |
|---------------+--------------------------------------------|
| z=0 | Microphone gain set to 0 dBm. |
|---------------+--------------------------------------------|
| z=1 | Microphone gain set to 6 dBm. |
|---------------+--------------------------------------------|
| z=2 | Microphone gain set to 9.5 dBm. |
|---------------+--------------------------------------------|
| z=3 | Microphone gain set to 12 dBm. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SVD DATA BURST |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] -SMC=n [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects whether the modem will increase |
| | data throughput when no audio signal is |
| | detected during an SVD connection. |
|------------------------------------------------------------|
| Command | Function |
|------------------------+-----------------------------------|
| -SMC=0 | Data burst disabled. |
|------------------------+-----------------------------------|
| í -SMC=1 | Data burst enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SVD BANDWIDTH |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] -SMS=a,b,c,d [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects the throughput levels allowed for |
| | SVD mode. |
|------------------------------------------------------------|
| Command | Function |
|---------------+--------------------------------------------|
| a=0 | SVD mode disabled. |
|---------------+--------------------------------------------|
| a=2 | SVD mode enabled. |
|---------------+--------------------------------------------|
| í a=3 | Auto-detect correct mode. |
|---------------+--------------------------------------------|
| b,c=4800 | Sets the minimum or maximum combined voice |
| | or data speed to 4800bps, respectively. |
|---------------+--------------------------------------------|
| b,c=7200 | Sets the minimum or maximum combined voice |
| | or data speed to 7200bps, respectively. |
|---------------+--------------------------------------------|
| b,c=9600 | Sets the minimum or maximum combined voice |
| | or data speed to 9600bps, respectively. |
|---------------+--------------------------------------------|
| b,c=12000 | Sets the minimum or maximum combined voice |
| | or data speed to 12Kbps, respectively. |
|---------------+--------------------------------------------|
| b,c=14400 | Sets the minimum or maximum combined voice |
| | or data speed to 14.4Kbps, respectively. |
|---------------+--------------------------------------------|
| d | Sets the baud rate for ML288 modulation |
| | mode. A setting of 0 will cause the modem |
| | to auto-detect the correct mode, which is |
| | the default. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SVD MODULATION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] -SQS=m,n [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects which modulation type the modem |
| | will use for SVD mode. |
|------------------------------------------------------------|
| Command | Function |
|---------------+--------------------------------------------|
| m=0 | Selects V.61 modulation. |
|---------------+--------------------------------------------|
| m=1 | Selects ML144 modulation. |
|---------------+--------------------------------------------|
| í m=2 | Selects ML288 modulation. |
|---------------+--------------------------------------------|
| n=0 | Modem will not auto-detect the correct |
| | modulation. |
|---------------+--------------------------------------------|
| í n=1 | Modem will auto-detect the correct |
| | modulation. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VOICE DEVICE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] #VLS=n [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects the I/O device for the DSP chip. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í #VLS=0 | Telephone line and handset used for voice |
| | I/O. |
|--------------+---------------------------------------------|
| #VLS=1 | Telephone handset used for voice I/O. |
|--------------+---------------------------------------------|
| #VLS=2 | Internal speaker only used for voice I/O. |
|--------------+---------------------------------------------|
| #VLS=3 | External microphone only used for voice |
| | I/O. |
|--------------+---------------------------------------------|
| #VLS=4 | Telephone line and handset used for voice |
| | I/O; internal speaker enabled. |
|--------------+---------------------------------------------|
| #VLS=6 | Speakerphone used for voice I/O. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VOICE SAMPLE QUALITY |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] #VBS=n [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects the number of bits per sample that |
| | the modem records. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| #VBS=2 | Modem records 2 bits per sample in ADPCM |
| | encoding. |
|--------------+---------------------------------------------|
| í #VBS=4 | Modem records 4 bits per sample in ADPCM |
| | encoding. |
|--------------+---------------------------------------------|
| #VBS=8 | Modem records 8 bits per sample in PCM |
| | encoding. |
|--------------+---------------------------------------------|
| #VBS=16 | Modem records 16 bits per sample in PCM |
| | encoding. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VOICE SAMPLING RATE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] #VSR=n [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets the sampling rate used when recording |
| | voice signals. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í #VSR=7200 | Selects a sampling rate of 7.2KHz. |
|--------------+---------------------------------------------|
| #VSR=11025 | Selects a sampling rate of 11.025KHz in PCM |
| | encoding only. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VOICE VOLUME LEVEL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] #VGT=n [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets the volume level when playing back |
| | audio signals. |
|------------------------------------------------------------|
| Command | Function |
|----------------------+-------------------------------------|
| #VGT=128 | Low volume setting. |
|----------------------+-------------------------------------|
| í #VGT=129 | Medium volume setting. |
|----------------------+-------------------------------------|
| #VGT=130 | High volume setting. |
|----------------------+-------------------------------------|
| #VGT=131 | Highest volume setting. |
+------------------------------------------------------------+