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# HARMONY MULTIMEDIA
HM 18022
Card Type Modem (asynchronous)
Chip Set TI
I/O Options Audio line in, speaker out, microphone,
line in, line out
Maximum Modem Rate 56.0Kbps
Maximum Fax Rate 14.4Kbps
Data Modulation Bell 103/212A
Protocol
ITU-T V.21, V.22, V.22bis, V.23, V.32,
V.32bis, V.34, x2
Fax Modulation ITU-T V.17, V.27ter, V.29
Protocol
Error MNP5, V.42, V.42bis
Correction/Compression
Fax Class Class I
Data Bus 16-bit ISA
Card Size Half-length, full-height card
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|------------------------------------------------------------|
| Line in | CN1 | Speaker out | CN4 |
|-----------------------------+---------+-------------+------|
| Line out | CN2 | Microphone | CN5 |
|-----------------------------+---------+-------------+------|
| Audio line in | CN3 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT ADDRESS |
|------------------------------------------------------------|
| Setting | J3/A | J3/B | J3/C |
|----------------+--------------+--------------+-------------|
| COM1 (3F8h) | Closed | Closed | Closed |
|----------------+--------------+--------------+-------------|
| COM2 (2F8h) | Open | Closed | Closed |
|----------------+--------------+--------------+-------------|
| COM3 (3E8h) | Closed | Open | Closed |
|----------------+--------------+--------------+-------------|
| COM4 (2E8h) | Open | Open | Closed |
|----------------+--------------+--------------+-------------|
| Plug & Play | Open | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INTERRUPT |
|------------------------------------------------------------|
| Setting | J4/A | J4/B | J4/C | J4/D | J4/E |
|----------+---------+---------+---------+---------+---------|
| IRQ 2 | Closed | Open | Open | Open | Open |
|----------+---------+---------+---------+---------+---------|
| IRQ 3 | Open | Closed | Open | Open | Open |
|----------+---------+---------+---------+---------+---------|
| IRQ 4 | Open | Open | Closed | Open | Open |
|----------+---------+---------+---------+---------+---------|
| IRQ 5 | Open | Open | Open | Closed | Open |
|----------+---------+---------+---------+---------+---------|
| IRQ 7 | Open | Open | Open | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SUPPORTED COMMAND SET |
|------------------------------------------------------------|
| Basic AT Commands |
|------------------------------------------------------------|
| AT, ‘+++’ A/ |
|------------------------------------------------------------|
| A, B, D, E, F, H, M, O, V, X |
|------------------------------------------------------------|
| &C, &G, &R, &T, &Z |
|------------------------------------------------------------|
| S Registers |
|------------------------------------------------------------|
| S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, |
| S18, S25 |
|------------------------------------------------------------|
| Note: See MHI Help File for full command documentation. |
+------------------------------------------------------------+
Proprietary AT Command Set
+------------------------------------------------------------+
| DISPLAY COMMANDS |
|------------------------------------------------------------|
| Type: | Configuration |
|---------------------+--------------------------------------|
| Format: | AT [cmds] $ [cmds] |
|---------------------+--------------------------------------|
| Description: | Display a list of commands |
|------------------------------------------------------------|
| Note: The $ command can be used with all prefixes. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| RESULT CODES |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] Qn [cmds] |
|--------------+---------------------------------------------|
| Description: | Enables modem to send result codes to the |
| | DTE |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í Q0 | Result code sending enabled |
|--------------+---------------------------------------------|
| Q1 | Result code sending disabled |
|--------------+---------------------------------------------|
| Q2 | Display result codes only in Originate mode |
|--------------+---------------------------------------------|
| Q3 | Display result codes only in Ring mode |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DEFAULT CONFIGURATION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] Yn [cmds] |
|--------------+---------------------------------------------|
| Description: | Set power on/reset default configuration |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í Y0 | Profile 0 |
|--------------+---------------------------------------------|
| Y1 | Profile 1 |
|--------------+---------------------------------------------|
| Y2 | Generic Template (&F0) |
|--------------+---------------------------------------------|
| Y3 | Hardware flow control (&F1) |
|--------------+---------------------------------------------|
| Y4 | Software flow control (&F2) |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 | Resets modem to NVRAM profile selected by Y |
| | command |
|--------------+---------------------------------------------|
| Z1 | Resets modem to NVRAM profile 0 |
|--------------+---------------------------------------------|
| Z2 | Resets modem to NVRAM profile 1 |
|--------------+---------------------------------------------|
| Z3 | Resets modem to factory default profile 0 |
|--------------+---------------------------------------------|
| Z4 | Resets modem to factory default profile 1 |
|--------------+---------------------------------------------|
| Z5 | Resets modem to factory default profile 2 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MODIFY RESPONSES |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &An [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects the modify responses |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í &A0 | ARQ result codes disabled |
|--------------+---------------------------------------------|
| &A1 | Append/ARQ to word CONNECT responses when |
| | an error-correction connection is made |
|--------------+---------------------------------------------|
| &A2 | Append additional V.32 indicator in result |
| | codes for calls at or above 4800bps |
|--------------+---------------------------------------------|
| &A3 | Append Protocol of call: /LAPM, /MNP or |
| | NONE and V.42bis/MNP5 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DTE INTERFACE SPEED |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Bn [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls the DTE interface speed |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í &B0 | Serial speed follows connect speed |
|--------------+---------------------------------------------|
| &B1 | Serial speed locked |
|--------------+---------------------------------------------|
| &B2 | In answer mode, fix serial port speed for |
| | ARQ calls and change it for non-ARQ calls |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DATA TERMINAL READY (DTR) |
|------------------------------------------------------------|
| Type: | Configuration |
|---------------+--------------------------------------------|
| Format: | AT [cmds] &Dn [cmds] |
|---------------+--------------------------------------------|
| Description: | Selects modem response to DTR |
|------------------------------------------------------------|
| Note: The action each variant of &D causes depends on |
| the setting of &Q |
|------------------------------------------------------------|
| Command | Function |
|---------------+--------------------------------------------|
| í &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. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FACTORY DEFAULT PROFILE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &F [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets values in active profile to values |
| | found in the default profile |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í &F0 | Restore factory configuration: X1 &A1, &B0, |
| | &I0, &R1 |
|--------------+---------------------------------------------|
| &F1 | Restore factory profile 1 (hardware flow |
| | control) |
|--------------+---------------------------------------------|
| &F2 | Restore factory profile 2 (software flow |
| | control) |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Hn [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets the flow control |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í &H0 | Flow control disabled |
|--------------+---------------------------------------------|
| &H1 | Hardware flow control enabled |
|--------------+---------------------------------------------|
| &H2 | Software flow control enabled |
|--------------+---------------------------------------------|
| &H3 | Hardware and software flow control enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| XON/XOFF FLOW CONTROL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &In [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets the XON/XOFF flow control pass through |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í &I0 | XON/XOFF flow control disabled |
|--------------+---------------------------------------------|
| &I1 | XON/XOFF signals processed to modem and |
| | remote system |
|--------------+---------------------------------------------|
| &I2 | XON/XOFF signals processed to modem only |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DATA COMPRESSION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Kn [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls the V.42bis and MNP Class 5 data |
| | compression |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &K0 | Data compression disabled |
|--------------+---------------------------------------------|
| &K1 | Data compression enabled if the DTE data |
| | rate is higher than the link rate and the |
| | remote DCE either supports MNP 5 of V.42bis |
|--------------+---------------------------------------------|
| &K2 | Data compression enabled |
|--------------+---------------------------------------------|
| &K3 | V.42bis data compression only |
+------------------------------------------------------------+
+------------------------------------------------------------+
| OPERATING MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Mn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects operating mode |
|--------------+---------------------------------------------|
| Command | Mode |
|--------------+---------------------------------------------|
| &M0 | Normal mode |
|--------------+---------------------------------------------|
| í &M4 | Auto-reliable mode |
|--------------+---------------------------------------------|
| &M5 | MNP reliable mode |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DCE LINK RATE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Nn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects the DCE link rate |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í &N0 | Variable rate |
|--------------+---------------------------------------------|
| &N1 | Attempt at 300bps connection |
|--------------+---------------------------------------------|
| &N2 | Attempt at 1200bps connection |
|--------------+---------------------------------------------|
| &N3 | Attempt at 2400bps connection |
|--------------+---------------------------------------------|
| &N4 | Attempt at 4800bps connection |
|--------------+---------------------------------------------|
| &N5 | Attempt at 7200bps connection |
|--------------+---------------------------------------------|
| &N6 | Attempt at 9600bps connection |
|--------------+---------------------------------------------|
| &N7 | Attempt at 12000bps connection |
|--------------+---------------------------------------------|
| &N8 | Attempt at 14400bps connection |
|--------------+---------------------------------------------|
| &N9 | Attempt at 16800bps connection |
|--------------+---------------------------------------------|
| &N10 | Attempt at 19200bps connection |
|--------------+---------------------------------------------|
| &N11 | Attempt at 21600bps connection |
|--------------+---------------------------------------------|
| &N12 | Attempt at 24000bps connection |
|--------------+---------------------------------------------|
| &N13 | Attempt at 26400bps connection |
|--------------+---------------------------------------------|
| &N14 | Attempt at 28800bps connection |
|--------------+---------------------------------------------|
| &N15 | Attempt at 31200bps connection |
|--------------+---------------------------------------------|
| &N16 | Attempt at 33600bps connection |
|--------------+---------------------------------------------|
| &N17 | Attempt at 32000bps connection |
|--------------+---------------------------------------------|
| &N18 | Attempt at 36000bps connection |
|--------------+---------------------------------------------|
| &N19 | Attempt at 40000bps connection |
|--------------+---------------------------------------------|
| &N20 | Attempt at 44000bps connection |
|--------------+---------------------------------------------|
| &N21 | Attempt at 48000bps connection |
|--------------+---------------------------------------------|
| &N22 | Attempt at 49333bps connection |
|--------------+---------------------------------------------|
| &N23 | Attempt at 50666bps connection |
|--------------+---------------------------------------------|
| &N24 | Attempt at 52000bps connection |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PULSE RATIO |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Pn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects the pulse make/break ratio |
|--------------+---------------------------------------------|
| Command | Mode |
|--------------+---------------------------------------------|
| í &P0 | 39/61ms at 10pps (North America) |
|--------------+---------------------------------------------|
| &P1 | 33/67ms at 10pps (Europe) |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DATA SET READY (DSR) |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Sn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects DSR options |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &S0 | DSR forced high |
|--------------+---------------------------------------------|
| í &S1 | DSR high only while modem is handshaking or |
| | connected |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DCE LINK FLOOR |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Un |
|--------------+---------------------------------------------|
| Description: | Selects the DCE link rate floor |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &U0 | Disable |
|--------------+---------------------------------------------|
| &U1 | 300bps |
|--------------+---------------------------------------------|
| &U2 | 1200bps |
|--------------+---------------------------------------------|
| &U3 | 2400bps |
|--------------+---------------------------------------------|
| &U4 | 4800bps |
|--------------+---------------------------------------------|
| &U5 | 7200bps |
|--------------+---------------------------------------------|
| &U6 | 9600bps |
|--------------+---------------------------------------------|
| &U7 | 12000bps |
|--------------+---------------------------------------------|
| &U8 | 14400bps |
|--------------+---------------------------------------------|
| &U9 | 16800bps |
|--------------+---------------------------------------------|
| &U10 | 19200bps |
|--------------+---------------------------------------------|
| &U11 | 21600bps |
|--------------+---------------------------------------------|
| &U12 | 24000bps |
|--------------+---------------------------------------------|
| &U13 | 26400bps |
|--------------+---------------------------------------------|
| &U14 | 28800bps |
|--------------+---------------------------------------------|
| &U15 | 31200bps |
|--------------+---------------------------------------------|
| &U16 | 33600bps |
|--------------+---------------------------------------------|
| &U17 | 32000bps |
|--------------+---------------------------------------------|
| &U18 | 36000bps |
|--------------+---------------------------------------------|
| &U19 | 40000bps |
|--------------+---------------------------------------------|
| &U20 | 44000bps |
|--------------+---------------------------------------------|
| &U21 | 48000bps |
|--------------+---------------------------------------------|
| &U22 | 49333bps |
|--------------+---------------------------------------------|
| &U23 | 50666bps |
|--------------+---------------------------------------------|
| &U24 | 52000bps |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 S-register values to profile 0 |
|--------------+---------------------------------------------|
| &W1 | Write the S-register values to profile 1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BREAK HANDLING |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Yn [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls the break handling |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í &Y0 | Destructive break |
|--------------+---------------------------------------------|
| &Y1 | Expedited destructive option |
|--------------+---------------------------------------------|
| &Y2 | Expedited non-destructive option |
+------------------------------------------------------------+
S(status) -REGISTERS
+------------------------------------------------------------+
| INACTIVITY TIME |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format | AT [cmds] S19n [cmds] |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | 1 second |
|--------------+---------------------------------------------|
| Description: | Sets the maximum duration for inactivity |
| | timer |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S21 |
|------------------------------------------------------------|
| Format | AT [cmds] S21=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 10 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | .01 second |
|--------------+---------------------------------------------|
| Description: | Sets the break length character |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL CHARACTER – XON |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S22=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 19 |
|--------------+---------------------------------------------|
| Range: | 0-127 |
|--------------+---------------------------------------------|
| Unit: | ASCII |
|--------------+---------------------------------------------|
| Description: | Sets the character used to represent XON |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL CHARACTER - XOFF |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S23=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 19 |
|--------------+---------------------------------------------|
| Range: | 0-127 |
|--------------+---------------------------------------------|
| Unit: | ASCII |
|--------------+---------------------------------------------|
| Description: | Sets the character used to represent XOFF |
+------------------------------------------------------------+