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# 3COM CORPORATION
SPORTSTER VOICE 28.8 FAXMODEM (INTERNAL)
Card Type Modem, Fax
Chip Set Unidentified
I/O Options Serial ports (2 RJ-11)
Maximum Modem Rate 28.8Kbps
Maximum Fax Rate 14.4Kbps
Data Modulation Bell 103A/212A
Protocol
V.21, V.22, V.22bis, V.23, V.32,
V.32bis, V.34
Fax Modulation Unidentified
Protocol
Error MNP 2-4, MNP5, V.42, V.42bis
Correction/Compression
Fax Class Class I & II
Data Bus 8-bit ISA
Card Size Three-quarter length
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|------------------------------------------------------------|
| RJ-11 connector | CN1 | RJ-11 connector | CN2 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT ADDRESS |
|------------------------------------------------------------|
| Setting | JP1 |
|--------------------------+---------------------------------|
| COM1 (3F8h) | Pins 1 & 2, 3 & 4, 5 & 6 closed |
|--------------------------+---------------------------------|
| í COM2 (2F8h) | Pins 3 & 4, 5 & 6 closed |
|--------------------------+---------------------------------|
| COM3 (3E8h) | Pins 1 & 2, 5 & 6 closed |
|--------------------------+---------------------------------|
| COM4 (2E8h) | Pins 5 & 6 closed |
|--------------------------+---------------------------------|
| Plug & Play enabled | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| IRQ INTERRUPT |
|------------------------------------------------------------|
| IRQ | JP2 |
|------------------------------+-----------------------------|
| IRQ2 | Pins 1 & 2 closed |
|------------------------------+-----------------------------|
| í IRQ3 | Pins 3 & 4 closed |
|------------------------------+-----------------------------|
| IRQ4 | Pins 5 & 6 closed |
|------------------------------+-----------------------------|
| IRQ5 | Pins 7 & 8 closed |
|------------------------------+-----------------------------|
| IRQ7 | Pins 9 & 10 closed |
|------------------------------+-----------------------------|
| Plug & Play enabled | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SUPPORTED COMMAND SET |
|------------------------------------------------------------|
| Basic AT Commands |
|------------------------------------------------------------|
| AT, ‘+++’, ‘comma’, A/ |
|------------------------------------------------------------|
| A, B E, F, H, M, O, P, S, T, V, X |
|------------------------------------------------------------|
| &C, &D, &G, &T, &W, &Z |
|------------------------------------------------------------|
| S Registers |
|------------------------------------------------------------|
| S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, |
| S14, S18, S25, S38 |
|------------------------------------------------------------|
| |
|------------------------------------------------------------|
| Note: See MHI Help File for full command documentation. |
+------------------------------------------------------------+
PROPRIETARY AT COMMAND SET
+------------------------------------------------------------+
| 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 |
|--------------+---------------------------------------------|
| DR | Answer mode enabled; originate mode |
| | disabled following handshake initiation. |
|--------------+---------------------------------------------|
| DP | Pulse dialing enabled |
|--------------+---------------------------------------------|
| DS=n | Dial stored telephone number n |
|--------------+---------------------------------------------|
| D#, * | Extended touch tone pads |
|--------------+---------------------------------------------|
| DT | Tone dialing enabled/Pulse dialing disabled |
|--------------+---------------------------------------------|
| D/ | Delays for 125ms before proceeding with |
| | dial string |
|--------------+---------------------------------------------|
| 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 Quite 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$ | Displays a list of dial commands |
|--------------+---------------------------------------------|
| D; | Modem returned to idle state after dialing. |
| | The semicolon can only be placed at the end |
| | of the dial command. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REPORT INFORMATION |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] In [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays information requested |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| I0 | Reports modem model and speed |
|--------------+---------------------------------------------|
| I1 | Reports ROM checksum |
|--------------+---------------------------------------------|
| I2 | Tests and reports RAM checksum |
|--------------+---------------------------------------------|
| I3 | Reports product type |
|--------------+---------------------------------------------|
| I4 | Reports current modem settings |
|--------------+---------------------------------------------|
| I5 | Reports nonvolatile memory (NVRAM) settings |
|--------------+---------------------------------------------|
| I6 | Reports link diagnostics |
|--------------+---------------------------------------------|
| I7 | Reports product confirmation |
|--------------+---------------------------------------------|
| I9 | Reports Plug & Play information |
|--------------+---------------------------------------------|
| I11 | Reports call statistics |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 | Result code sending only in Originate mode |
|--------------+---------------------------------------------|
| Q3 | Result code sending only in Ring mode |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LONG SPACE DISCONNECT |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] Yn [cmds] |
|--------------+---------------------------------------------|
| Description: | Commands the modem to disconnect after a |
| | 1.6 second break is detected |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í Y0 | Default is profile 0 setting |
|--------------+---------------------------------------------|
| Y1 | Default is profile 1 setting |
|--------------+---------------------------------------------|
| 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 | Restore setting selected by Y command |
|--------------+---------------------------------------------|
| Z1 | Restore setting 0 |
|--------------+---------------------------------------------|
| Z2 | Restore setting 1 |
|--------------+---------------------------------------------|
| Z3 | Restore to factory default profile 0 (&F0) |
|--------------+---------------------------------------------|
| Z4 | Restore to factory default profile 1 (&F1) |
|--------------+---------------------------------------------|
| Z5 | Restore to factory default profile 2 (&F2) |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AUTO-ANSWER - ORIGINATE/ANSWER |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &An [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects originate or answer mode when in |
| | Auto-Answer mode |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &A0 | ARQ result codes disabled |
|--------------+---------------------------------------------|
| &A1 | ARQ result codes enabled |
|--------------+---------------------------------------------|
| &A2 | V-modulation indicator added |
|--------------+---------------------------------------------|
| &A3 | Protocol indicators added |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT RATE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Bn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects fixed or variable serial port rate |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &B0 | Variable , follows connection rate |
|--------------+---------------------------------------------|
| í &B1 | Fixed serial port rate |
|--------------+---------------------------------------------|
| &B2 | Fixed in ARQ mode, variable in non-ARQ mode |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
|--------------+---------------------------------------------|
| &F0 | Generic template |
|--------------+---------------------------------------------|
| &F1 | Hardware flow control template |
|--------------+---------------------------------------------|
| &F2 | Software flow control template |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TRANSMIT DATA FLOW CONTROL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &H [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets transmit data flow control |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &H0 | Generic template |
|--------------+---------------------------------------------|
| í &H1 | Hardware flow control template |
|--------------+---------------------------------------------|
| &H2 | Software flow control template |
|--------------+---------------------------------------------|
| &H3 | Hardware and software flow control |
| | templates |
+------------------------------------------------------------+
+------------------------------------------------------------+
| RECEIVE DATA SOFWARE FLOW CONTROL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &I [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets transmit data flow control |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í &I0 | Software flow control |
|--------------+---------------------------------------------|
| &I1 | XON/XOFF signals to your modem and remote |
| | system |
|--------------+---------------------------------------------|
| &I2 | XON/XOFF signals to your modem only |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Kn [cmds] |
|--------------+---------------------------------------------|
| Description: | Enables flow control options |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &K0 | Flow control disabled |
|--------------+---------------------------------------------|
| í &K1 | Auto enable/disable |
|--------------+---------------------------------------------|
| &K2 | XON/XOFF flow control enabled |
|--------------+---------------------------------------------|
| &K3 | MNP5 compression disabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| COMMUNICATIONS MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Mn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects communications mode |
|--------------+---------------------------------------------|
| Command | Mode |
|--------------+---------------------------------------------|
| &M0 | Normal mode, error control disabled |
|--------------+---------------------------------------------|
| &M1 | Reserved |
|--------------+---------------------------------------------|
| &M2 | Reserved |
|--------------+---------------------------------------------|
| &M3 | Reserved |
|--------------+---------------------------------------------|
| í &M4 | Normal/ARQ |
|--------------+---------------------------------------------|
| &M5 | ARQ mode |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONNECTION SPEED UPPER LIMIT |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Nn [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets required connection speed if &U is set |
| | to 0; otherwise, sets fastest allowed |
| | connection speed. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &N0 | No maximum connect speed. |
|--------------+---------------------------------------------|
| &N1 | Set maximum connect speed to 300bps. |
|--------------+---------------------------------------------|
| &N2 | Set maximum connect speed to 1200bps. |
|--------------+---------------------------------------------|
| &N3 | Set maximum connect speed to 2400bps. |
|--------------+---------------------------------------------|
| &N4 | Set maximum connect speed to 4800bps. |
|--------------+---------------------------------------------|
| &N5 | Set maximum connect speed to 7200bps. |
|--------------+---------------------------------------------|
| &N6 | Set maximum connect speed to 9600bps. |
|--------------+---------------------------------------------|
| &N7 | Set maximum connect speed to 12Kbps. |
|--------------+---------------------------------------------|
| &N8 | Set maximum connect speed to 14.4Kbps. |
|--------------+---------------------------------------------|
| &N9 | Set maximum connect speed to 16.8Kbps. |
|--------------+---------------------------------------------|
| &N10 | Set maximum connect speed to 19.2Kbps. |
|--------------+---------------------------------------------|
| &N11 | Set maximum connect speed to 21.6Kbps. |
|--------------+---------------------------------------------|
| &N12 | Set maximum connect speed to 24Kbps. |
|--------------+---------------------------------------------|
| &N13 | Set maximum connect speed to 26.4Kbps. |
|--------------+---------------------------------------------|
| &N14 | Set maximum connect speed to 28.8Kbps. |
|--------------+---------------------------------------------|
| &N15 | Set maximum connect speed to 31.2Kbps. |
|--------------+---------------------------------------------|
| &N16 | Set maximum connect speed to 33.6Kbps. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PULSE DIALING RATIO |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Pn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects pulse dial make/break ratio |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í &P0 | 39/61ms at 10pps (North America) |
|--------------+---------------------------------------------|
| &P1 | 33/67ms at 10pps (Europe) |
+------------------------------------------------------------+
+------------------------------------------------------------+
| RTS/CTS |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Rn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects RTS/CTS options |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &R0 | Reserved |
|--------------+---------------------------------------------|
| &R1 | Modem ignores RTS. |
|--------------+---------------------------------------------|
| &R2 | Received Data on computer only on RTS |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 handshaking or |
| | connected |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONNECTION SPEED LOWER LIMIT |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Un [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets slowest allowed connection speed if &N |
| | is set to 1 or higher. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í&U0 | No minimum connect speed. |
|--------------+---------------------------------------------|
| &U1 | Set minimum connect speed to 300bps. |
|--------------+---------------------------------------------|
| &U2 | Set minimum connect speed to 1200bps. |
|--------------+---------------------------------------------|
| &U3 | Set minimum connect speed to 2400bps. |
|--------------+---------------------------------------------|
| &U4 | Set minimum connect speed to 4800bps. |
|--------------+---------------------------------------------|
| &U5 | Set minimum connect speed to 7200bps. |
|--------------+---------------------------------------------|
| &U6 | Set minimum connect speed to 9600bps. |
|--------------+---------------------------------------------|
| &U7 | Set minimum connect speed to 12Kbps. |
|--------------+---------------------------------------------|
| &U8 | Set minimum connect speed to 14.4Kbps. |
|--------------+---------------------------------------------|
| &U9 | Set minimum connect speed to 16.8Kbps. |
|--------------+---------------------------------------------|
| &U10 | Set minimum connect speed to 19.2Kbps. |
|--------------+---------------------------------------------|
| &U11 | Set minimum connect speed to 21.6Kbps. |
|--------------+---------------------------------------------|
| &U12 | Set minimum connect speed to 24Kbps. |
|--------------+---------------------------------------------|
| &U13 | Set minimum connect speed to 26.4Kbps. |
|--------------+---------------------------------------------|
| &U14 | Set minimum connect speed to 28.8Kbps. |
|--------------+---------------------------------------------|
| &U15 | Set minimum connect speed to 31.2Kbps. |
|--------------+---------------------------------------------|
| &U16 | Set maximum connect speed to 33.6Kbps. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 | Destructive, doesn’t send break |
|--------------+---------------------------------------------|
| &Y1 | Destructive, expedited |
|--------------+---------------------------------------------|
| &Y2 | Nondestructive, expedited |
|--------------+---------------------------------------------|
| &Y3 | Reserved |
+------------------------------------------------------------+
S(STATUS) -REGISTERS
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S13 |
|------------------------------------------------------------|
| Format: | AT [cmds] S13=n [cmds] |
|--------------+---------------------------------------------|
| Range: | 0-174 |
|--------------+---------------------------------------------|
| Unit: | Bit-mapped |
|--------------+---------------------------------------------|
| Description: | Controls reset, dial mode |
|--------------+---------------------------------------------|
| Bit | Value | Function |
|------+-------+---------------------------------------------|
| 0 | 0 | Unidentified |
| | | |
| | 1 | Resets when DTR drops |
|------+-------+---------------------------------------------|
| 1 | 0 | Unidentified |
| | | |
| | í 1 | Resets non-MNP transmit buffer from 1.5K to |
| | | 128bytes |
|------+-------+---------------------------------------------|
| 2 | 0 | Unidentified |
| | | |
| | 1 | Sets backspace key to delete |
|------+-------+---------------------------------------------|
| 3 | 0 | Unidentified |
| | | |
| | 1 | On DTR signal, auto dials number stared at |
| | | NVRAM position 0 |
|------+-------+---------------------------------------------|
| 4 | 0 | Unidentified |
| | | |
| | 1 | At power on/reset, auto dials number stared |
| | | at NVRAM position 0 |
|------+-------+---------------------------------------------|
| 5 | 0 | Reserved |
|------+-------+---------------------------------------------|
| 6 | 0 | Reserved |
|------+-------+---------------------------------------------|
| 7 | 0 1 | Unidentified |
| | | |
| | | Disconnect on escape code |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S15 |
|------------------------------------------------------------|
| Format: | AT [cmds] S15=n [cmds] |
|--------------+---------------------------------------------|
| Unit: | Bit-mapped |
|--------------+---------------------------------------------|
| Description: | Disable/Enable MNP |
|--------------+---------------------------------------------|
| Bit | Value | Function |
|------+-------+---------------------------------------------|
| 0 | 0 | Enable ARQ/MNP for V.22 |
| | | |
| | 1 | Disable ARQ/MNP for V.22 |
|------+-------+---------------------------------------------|
| 1 | 0 | Enable ARQ/MNP for V.22bis |
| | | |
| | 1 | Disable ARQ/MNP for V.22bis |
|------+-------+---------------------------------------------|
| 2 | 0 | Enable ARQ/MNP for V.32/V.32bis/V.32terbo |
| | | |
| | 1 | Enable ARQ/MNP for V.32/V.32bis/V.32terbo |
|------+-------+---------------------------------------------|
| 3 | 0 | Enable MNP handshake |
| | | |
| | 1 | Disable MNP handshake |
|------+-------+---------------------------------------------|
| 4 | 0 | Enable MNP level 4 |
| | | |
| | 1 | Disable MNP level 4 |
|------+-------+---------------------------------------------|
| 5 | 0 | Enable MNP level 3 |
| | | |
| | 1 | Disable MNP level 3 |
|------+-------+---------------------------------------------|
| 6 | 0 | MNP compatibility |
| | | |
| | 1 | MNP incompatibility |
|------+-------+---------------------------------------------|
| 7 | 0 1 | Enable V.42 operation |
| | | |
| | | Disable V.42 operation |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TEST MODES |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S16=n [cmds] |
|--------------+---------------------------------------------|
| Unit: | Bit-mapped |
|--------------+---------------------------------------------|
| Description: | Controls touch tone dialing test. |
|--------------+---------------------------------------------|
| Bit | Value | Function |
|------+-------+---------------------------------------------|
| 0 | 0 | Reserved |
|------+-------+---------------------------------------------|
| 1 | 0 | Touch tone dialing test not in progress |
| | | |
| | 1 | Touch tone dialing test in progress |
|------+-------+---------------------------------------------|
| 2-7 | 0 | Reserved |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INACTIVITY TIMER |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format | AT [cmds] S19=n [cmds] |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | 1 minute |
|--------------+---------------------------------------------|
| Description: | Maximum duration of DTE and DCE inactivity |
| | allowed prior to initiating hang-up |
| | process. |
|------------------------------------------------------------|
| Note: S19=0 disables the timer and allows indefinite |
| inactivity. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BREAK LENGTH |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format | AT [cmds] S21=n [cmds] |
|--------------+---------------------------------------------|
| Unit: | 10ms |
|--------------+---------------------------------------------|
| Description: | Sets duration of breaks sent from the modem |
| | to the computer |
|------------------------------------------------------------|
| Note: Applies to MNP or V.42 mode only. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL CHARACTER - XON |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S22=n [cmds] |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | ASCII |
|--------------+---------------------------------------------|
| Description: | Sets the character used to represent XON |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL CHARACTER - XOFF |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S23=n [cmds] |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | ASCII |
|--------------+---------------------------------------------|
| Description: | Sets the character used to represent XOFF |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S27 |
|------------------------------------------------------------|
| Format | AT [cmds] S27=n [cmds] |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | Bit-mapped |
|--------------+---------------------------------------------|
| Description: | Enables/disables modulation protocols |
|--------------+---------------------------------------------|
| Bit | Value | Function |
|------+-------+---------------------------------------------|
| 0 | 0 | Disable ITU-T modulation at 300bps for |
| | | overseas calls: in V.21 mode, the modem |
| | 1 | answers both overseas and domestic calls, |
| | | but only originates V.21 calls |
| | | |
| | | Enable ITU-T modulation at 300bps for |
| | | overseas calls: in V.21 mode, the modem |
| | | answers both overseas and domestic calls, |
| | | but only originates V.21 calls |
|------+-------+---------------------------------------------|
| 1 | 0 | Disable unencoded modulation in V.32 mode |
| | | |
| | 1 | Enable unencoded modulation in V.32 mode |
|------+-------+---------------------------------------------|
| 2 | 0 | Enable V.32 modulation |
| | | |
| | 1 | Disable V.32 modulation |
|------+-------+---------------------------------------------|
| 3 | 0 | Enable 2100Hz answer tone |
| | | |
| | 1 | Disable 2100Hz answer tone |
|------+-------+---------------------------------------------|
| 4 | 0 | Disable V.23 fallback mode |
| | | |
| | 1 | Enable V.23 fallback mode |
|------+-------+---------------------------------------------|
| 5 | 0 | Enable V.32bis mode |
| | | |
| | 1 | Disable V.32bis mode |
|------+-------+---------------------------------------------|
| 6 | 0 | Enable V.42 selective reject |
| | | |
| | 1 | Disable V.42 selective reject |
|------+-------+---------------------------------------------|
| 7 | 0 1 | Enable codes |
| | | |
| | | Disable codes and displays 900 code instead |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONNECTION TIME |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format | AT [cmds] S28=n [cmds] |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | .01 second |
|--------------+---------------------------------------------|
| Description: | Sets V.32 duration |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| S28=0 | Eliminates the V.32 answer tone for a |
| | faster connection |
|--------------+---------------------------------------------|
| S28=8 | Times are in .1 second |
|--------------+---------------------------------------------|
| S328=255 | Disable connections except V.32 at 9600bps |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FALLBACK TIMER |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format | AT [cmds] S29=n [cmds] |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | .01 second |
|--------------+---------------------------------------------|
| Description: | Sets the duration of the V.21 answer mode |
| | fallback timer |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VOLUME CONTROL |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format | AT [cmds] S31=n [cmds] |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Description: | Sets volume control for speakerphone |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S32 |
|------------------------------------------------------------|
| Format: | AT [cmds] S32=n [cmds] |
|-----------------+------------------------------------------|
| Range: | 0-255 |
|-----------------+------------------------------------------|
| Description: | Select setup for 28.8 and higher speed |
| | modems |
|------------------------------------------------------------|
| Bit | Value | Function |
|-----------+------------+-----------------------------------|
| 0 | 0 | Disable V.8 call indicate |
| | | |
| | 1 | Enable V.8 call indicate |
|-----------+------------+-----------------------------------|
| 1 | 0 | Disable V.8 mode |
| | | |
| | 1 | Enable V.8 mode |
|-----------+------------+-----------------------------------|
| 2 | 0 | Enable V.FC modulation |
| | | |
| | 1 | Disable V.FC modulation |
|-----------+------------+-----------------------------------|
| 3 | 0 | Enable V.34 modulation |
| | | |
| | 1 | Disable V.34 modulation |
|-----------+------------+-----------------------------------|
| 4 | 0 | Enable 33.6kbps modulation |
| | | |
| | 1 | Disable 33.6kbps modulation |
|-----------+------------+-----------------------------------|
| 5-6 | 0 | Reserved |
| | | |
| | 1 | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S33 |
|------------------------------------------------------------|
| Format: | AT [cmds] S33=n [cmds] |
|----------------+-------------------------------------------|
| Range: | 0-255 |
|----------------+-------------------------------------------|
| Description: | Disable/enable data rates |
|------------------------------------------------------------|
| Bit | Value | Function |
|----------+--------+----------------------------------------|
| 0 | 0 | Enable 2400 symbol rate |
| | | |
| | 1 | Disable 2400 symbol rate |
|----------+--------+----------------------------------------|
| 1 | 0 | Enable 2743 symbol rate |
| | | |
| | 1 | Disable 2743 symbol rate |
|----------+--------+----------------------------------------|
| 2 | 0 | Enable 2800 symbol rate |
| | | |
| | | Disable 2800 symbol rate |
|----------+--------+----------------------------------------|
| 3 | 0 | Enable 3000 symbol rate |
| | | |
| | 1 | Disable 3000 symbol rate |
|----------+--------+----------------------------------------|
| 4 | 0 | Enable 3200 symbol rate |
| | | |
| | 1 | Disable 3200 symbol rate |
|----------+--------+----------------------------------------|
| 5 | 0 | Enable 3429 symbol rate |
| | | |
| | 1 | Disable 3429 symbol rate |
|----------+--------+----------------------------------------|
| 6 | 0 | Reserved |
|----------+--------+----------------------------------------|
| 7 | 0 | Enable shaping |
| | | |
| | 1 | Disable shaping |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S34 |
|------------------------------------------------------------|
| Format: | AT [cmds] S34=n [cmds] |
|----------------+-------------------------------------------|
| Range: | 0-255 |
|----------------+-------------------------------------------|
| Description: | Disable/enable trellis encoding |
|------------------------------------------------------------|
| Bit | Value | Function |
|----------+-------+-----------------------------------------|
| 0 | 0 | Enable 8S-2D trellis encoding |
| | | |
| | 1 | Disable 8S-2D trellis encoding |
|----------+-------+-----------------------------------------|
| 1 | 0 | Enable 16S-4D trellis encoding |
| | | |
| | 1 | Disable 16S-4D trellis encoding |
|----------+-------+-----------------------------------------|
| 2 | 0 | Enable 32S-2D trellis encoding |
| | | |
| | 1 | Disable 32S-2D trellis encoding |
|----------+-------+-----------------------------------------|
| 3 | 0 | Enable 64S-4D trellis encoding |
| | | |
| | 1 | Disable 64S-4D trellis encoding |
|----------+-------+-----------------------------------------|
| 4 | 0 | Enable non-linear coding |
| | | |
| | 1 | Disable non-linear coding |
|----------+-------+-----------------------------------------|
| 5 | 0 | Enable TX level deviation |
| | | |
| | 1 | Disable TX level deviation |
|----------+-------+-----------------------------------------|
| 6 | 0 | Enable pre-emphasis |
| | | |
| | 1 | Disable pre-emphasis |
|----------+-------+-----------------------------------------|
| 7 | 0 | Enable pre-coding |
| | | |
| | 1 | Disable pre-coding |
+------------------------------------------------------------+