3COM CORPORATION ================ US ROBOTICS 14,400/PC, US ROBOTICS 14,400/PC FAX Card Type Modem (asynchronous) Chipset U.S. Robotics Maximum Data Rate 14.4Kbps Maximum Fax Rate 14.4Kbps (fax model only) Data Modulation Bell 103A/212A ITU-T V.21, V.22, V.22bis, V.23, V.32, V.32bis Fax Modulation ITU-T V.17, V.21CH2, V.27ter, V.29 (fax model only) Error MNP5, V.42, V.42bis Correction/Compression Fax Class Class I (fax model only) Data Bus 8-bit ISA Card Size Full height, one-third length +------------------------------------------------------------+ | CONNECTIONS | |------------------------------------------------------------| | Function | Label | Function | Label | |----------------------+-------+---------------------+-------| | Telephone line out | CN1 | Telephone line in | CN2 | +------------------------------------------------------------+ +------------------------------------------------------------+ | USER CONFIGURABLE SETTINGS | |------------------------------------------------------------| | Setting | Label | Position | |----------------------------------------+-------+-----------| | i DTR normal | SW1/1 | Off | |----------------------------------------+-------+-----------| | DTR forced high | SW1/1 | On | |----------------------------------------+-------+-----------| | i Modem sends verbose result codes | SW1/2 | Off | |----------------------------------------+-------+-----------| | Modem sends numeric result codes | SW1/2 | On | |----------------------------------------+-------+-----------| | i Result codes enabled | SW1/3 | On | |----------------------------------------+-------+-----------| | Result codes disabled | SW1/3 | Off | |----------------------------------------+-------+-----------| | i Command mode echo enabled | SW1/4 | Off | |----------------------------------------+-------+-----------| | Command mode echo enabled | SW1/4 | On | |----------------------------------------+-------+-----------| | i Auto-answer disabled | SW1/5 | On | |----------------------------------------+-------+-----------| | Auto-answer controlled by S0 | SW1/5 | Off | |----------------------------------------+-------+-----------| | i DCD normal | SW1/6 | Off | |----------------------------------------+-------+-----------| | DCD forced high | SW1/6 | On | +------------------------------------------------------------+ +------------------------------------------------------------+ | USER CONFIGURABLE SETTINGS (CON'T) | |------------------------------------------------------------| | Setting | Label | Position | |-----------------------------------------+-------+----------| | i Load settings from profile specified | SW1/7 | Off | | by Y command | | | |-----------------------------------------+-------+----------| | Load settings from factory defaults | SW1/7 | On | |-----------------------------------------+-------+----------| | i Command set enabled | SW1/8 | On | |-----------------------------------------+-------+----------| | Command set disabled | SW1/8 | Off | +------------------------------------------------------------+ +------------------------------------------------------------+ | SERIAL PORT ADDRESS SELECTION | |------------------------------------------------------------| | Setting | JP1/A | JP1/B | JP1/C | JP1/D | |--------------+-----------+-----------+----------+----------| | 3F8h (COM1:) | Closed | Open | Open | Open | |--------------+-----------+-----------+----------+----------| | 2E8h (COM2:) | Open | Closed | Open | Open | |--------------+-----------+-----------+----------+----------| | 3F8h (COM3:) | Open | Open | Closed | Open | |--------------+-----------+-----------+----------+----------| | 2E8h (COM4:) | Open | Open | Open | Closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | INTERRUPT SELECTION | |------------------------------------------------------------| | Setting | JP2/A | JP2/B | JP2/C | JP2/D | JP2/E | |----------+---------+---------+---------+---------+---------| | 2 | Closed | Open | Open | Open | Open | |----------+---------+---------+---------+---------+---------| | 3 | Open | Closed | Open | Open | Open | |----------+---------+---------+---------+---------+---------| | 4 | Open | Open | Closed | Open | Open | |----------+---------+---------+---------+---------+---------| | 5 | Open | Open | Open | Closed | Open | |----------+---------+---------+---------+---------+---------| | 7 | Open | Open | Open | Open | Closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | SUPPORTED STANDARD COMMANDS | |------------------------------------------------------------| | Basic AT Commands | |------------------------------------------------------------| | +++, 'comma', A/ | |------------------------------------------------------------| | A, B, D, E, H, L, M, O, V, X, Z | |------------------------------------------------------------| | &C, &D, &F, &G, &P, &R, &S, &T, &W, &Z | |------------------------------------------------------------| | S-Registers | |------------------------------------------------------------| | S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, | | S18, S25, S38 | |------------------------------------------------------------| | Note: See MHI help file for complete information. | +------------------------------------------------------------+ Proprietary AT Command Set +------------------------------------------------------------+ | BIT-MAPPED REGISTER S13 | |------------------------------------------------------------| | Format | AT [cmds] S13=n [cmds] | |--------------+---------------------------------------------| | Default: | 0 | |--------------+---------------------------------------------| | Range: | 0 - 89 | |--------------+---------------------------------------------| | Description: | Controls DTR reset, DTR dialing, reset | | | dialing, and MNP3. | |--------------+---------------------------------------------| | Bit | Value | Function | |------+-------+---------------------------------------------| | 0 | i 0 | DTR normal. | | | | | | | 1 | Reset on low DTR. | |------+-------+---------------------------------------------| | 2, 1 | 00 | Not used. | |------+-------+---------------------------------------------| | 3 | i 0 | DTR dialing disabled. | | | | | | | 1 | DTR dialing enabled. | |------+-------+---------------------------------------------| | 4 | i 0 | Reset dialing disabled. | | | | | | | 1 | Reset dialing enabled. | |------+-------+---------------------------------------------| | 5 | 0 | Not used. | |------+-------+---------------------------------------------| | 6 | i 0 | MNP 3 enabled. | | | | | | | 1 | MNP 3 disabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | BIT-MAPPED REGISTER S15 | |------------------------------------------------------------| | Format: | AT [cmds] S15=n [cmds] | |--------------+---------------------------------------------| | Default: | 0 | |--------------+---------------------------------------------| | Range: | 0 - 56 | |--------------+---------------------------------------------| | Description: | Controls non-error-correcting mode buffer, | | | MNP4, and BS/DEL switch. | |--------------+---------------------------------------------| | Bit | Value | Function | |------+-------+---------------------------------------------| | 2 - | 000 | Not used. | | 0 | | | |------+-------+---------------------------------------------| | 3 | i 0 | Non-error-correcting mode transmit buffer | | | | set to 1.5KB. | | | 1 | | | | | Non-error-correcting mode transmit buffer | | | | set to 128 bytes. | |------+-------+---------------------------------------------| | 4 | i 0 | MNP 4 enabled. | | | | | | | 1 | MNP 4 disabled. | |------+-------+---------------------------------------------| | 5 | i 0 | Backspace and delete keys normal. | | | | | | | 1 | Backspace and delete keys reversed. | +------------------------------------------------------------+ +------------------------------------------------------------+ | BIT-MAPPED REGISTER S27 | |------------------------------------------------------------| | Format: | AT [cmds] S27=n [cmds] | |--------------+---------------------------------------------| | Default: | 0 | |--------------+---------------------------------------------| | Range: | 0 - 191 | |--------------+---------------------------------------------| | Description: | Controls V.21, V.32 encoding and | | | modulation, V.42 answer tone and handshake, | | | and 9600 result codes. | |--------------+---------------------------------------------| | Bit | Value | Function | |------+-------+---------------------------------------------| | 0 | i 0 | V.21 disabled. | | | | | | | 1 | V.21 enabled. | |------+-------+---------------------------------------------| | 1 | i 0 | V.32 trellis coding enabled. | | | | | | | 1 | V.32 trellis coding disabled. | |------+-------+---------------------------------------------| | 2 | i 0 | V.32 modulation enabled. | | | | | | | 1 | V.32 modulation disabled. | |------+-------+---------------------------------------------| | 3 | i 0 | 2100Hz answer tone enabled. | | | | | | | 1 | 2100Hz answer tone disabled. | |------+-------+---------------------------------------------| | 5, 4 | i 00 | V.42 detect, LAPM and MNP enabled. | | | | | | | 01 | V.42 detect and LAPM enabled. | | | | | | | 10 | MNP enabled. | | | | | | | 11 | LAPM enabled. | |------+-------+---------------------------------------------| | 6 | 0 | Not used. | |------+-------+---------------------------------------------| | 7 | i 0 | Actual result codes displayed. | | | | | | | 1 | Force 9600 result codes. | +------------------------------------------------------------+ +------------------------------------------------------------+ | BREAK LENGTH | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S21=n [cmds] | |--------------+---------------------------------------------| | Default: | 10 | |--------------+---------------------------------------------| | Range: | 0 - 255 | |--------------+---------------------------------------------| | Unit: | 10 ms | |--------------+---------------------------------------------| | Description: | Sets the length of error control mode | | | breaks sent from DCE to DTE. | +------------------------------------------------------------+ +------------------------------------------------------------+ | BREAK TYPE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] &Yn [cmds] | |--------------+---------------------------------------------| | Description: | Configures action of break signal. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | &Y0 | Break empties buffer. | |--------------+---------------------------------------------| | i &Y1 | Break empties buffer and is sent | | | immediately. | |--------------+---------------------------------------------| | &Y2 | Break does not empty buffer and is sent | | | immediately. | |--------------+---------------------------------------------| | &Y3 | Break does not empty buffer and is sent in | | | sequence with data. | +------------------------------------------------------------+ +------------------------------------------------------------+ | COMPRESSION MODE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] &Kn [cmds] | |--------------+---------------------------------------------| | Description: | Selects the type of data compression that | | | will be used. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | &K0 | Data compression disabled. | |--------------+---------------------------------------------| | i &K1 | Auto-detect compression mode. | |--------------+---------------------------------------------| | &K2 | Data compression enabled. | |--------------+---------------------------------------------| | &K3 | MNP5 data compression only enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | 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 | |--------------+---------------------------------------------| | &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. | +------------------------------------------------------------+ +------------------------------------------------------------+ | 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. | +------------------------------------------------------------+ +------------------------------------------------------------+ | DISPLAY INFORMATION | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] In [cmds] | |--------------+---------------------------------------------| | Description: | Displays modem properties. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | I0 | Displays product identification code. | |--------------+---------------------------------------------| | I1 | Tests and displays ROM checksum result. | |--------------+---------------------------------------------| | I2 | Tests and displays RAM checksum result. | |--------------+---------------------------------------------| | I4 | Displays current command settings. | |--------------+---------------------------------------------| | I5 | Displays current NVRAM settings. | |--------------+---------------------------------------------| | I6 | Displays current connection's statistics. | |--------------+---------------------------------------------| | I7 | Displays product configuration. | +------------------------------------------------------------+ +------------------------------------------------------------+ | ERROR CORRECTION MODE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] &Mn [cmds] | |--------------+---------------------------------------------| | Description: | Selects active error correction protocols. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | &M0 | Normal mode only. | |--------------+---------------------------------------------| | i &M4 | Auto-detect mode. | |--------------+---------------------------------------------| | &M5 | ARQ mode only. | +------------------------------------------------------------+ +------------------------------------------------------------+ | ESCAPE CHARACTER RESPONSE | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S14=n [cmds] | |--------------+---------------------------------------------| | Description: | Controls reaction to escape character. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | S14=0 | Normal operation. | |--------------+---------------------------------------------| | S14=1 | When +++ is received, modem disconnects and | | | enters command state. | +------------------------------------------------------------+ +------------------------------------------------------------+ | EXTENDED RESULT CODES | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] &An [cmds] | |--------------+---------------------------------------------| | Description: | Selects extended result codes. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | &A0 | Extended result codes disabled. | |--------------+---------------------------------------------| | &A1 | ARQ result codes enabled. | |--------------+---------------------------------------------| | &A2 | V.32 result code enabled. | |--------------+---------------------------------------------| | i &A3 | Error control and compression result codes | | | enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | FLOW CONTROL CHARACTER - XOFF | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S23=n [cmds] | |--------------+---------------------------------------------| | Default: | 19 | |--------------+---------------------------------------------| | Range: | 0 - 127 | |--------------+---------------------------------------------| | Unit: | 1 ASCII character | |--------------+---------------------------------------------| | Description: | Sets the character used to represent XOFF. | +------------------------------------------------------------+ +------------------------------------------------------------+ | FLOW CONTROL CHARACTER - XON | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S22=n [cmds] | |--------------+---------------------------------------------| | Default: | 17 | |--------------+---------------------------------------------| | Range: | 0 - 127 | |--------------+---------------------------------------------| | Unit: | 1 ASCII character | |--------------+---------------------------------------------| | Description: | Sets the character used to represent XON. | +------------------------------------------------------------+ +------------------------------------------------------------+ | FLOW CONTROL - MODEM-TO-MODEM | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] &In [cmds] | |--------------+---------------------------------------------| | Description: | Selects the type of modem-to-modem flow | | | control used. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | i &I0 | Software flow control disabled. | |--------------+---------------------------------------------| | &I1 | XON/XOFF pass-through enabled. | |--------------+---------------------------------------------| | &I2 | XON/XOFF pass-through disabled. | |--------------+---------------------------------------------| | &I3 | Hewlett-Packard ENQ/ACK host mode enabled. | |--------------+---------------------------------------------| | &I4 | Hewlett-Packard ENQ/ACK terminal mode | | | enabled. | |--------------+---------------------------------------------| | &I5 | XON/XOFF pass-through enabled in normal | | | mode and disabled in error-correcting mode. | +------------------------------------------------------------+ +------------------------------------------------------------+ | FLOW CONTROL TYPE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] &Hn [cmds] | |--------------+---------------------------------------------| | Description: | Sets type of flow control used by modem. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | &H0 | Flow control disabled. | |--------------+---------------------------------------------| | i &H1 | CTS/RTS flow control enabled. | |--------------+---------------------------------------------| | &H2 | XON/XOFF flow control enabled. | |--------------+---------------------------------------------| | &H3 | CTS/RTS and XON/XOFF flow control enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | INACTIVITY TIMER | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S19=n [cmds] | |--------------+---------------------------------------------| | Default: | 0 | |--------------+---------------------------------------------| | Range: | 0 - 255 | |--------------+---------------------------------------------| | Unit: | 1 minute | |--------------+---------------------------------------------| | Description: | Sets the length of time that the modem does | | | not receive information before it | | | disconnects; S19=0 will disable. | +------------------------------------------------------------+ +------------------------------------------------------------+ | LOCK SERIAL PORT | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] &Bn [cmds] | |--------------+---------------------------------------------| | Description: | Sets operation of serial port speed. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | &B0 | Serial speed follows connect speed. | |--------------+---------------------------------------------| | &B1 | Serial speed locked. | |--------------+---------------------------------------------| | i &B2 | Serial speed locked in ARQ mode only. | +------------------------------------------------------------+ +------------------------------------------------------------+ | PROFILE ON POWER-UP | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] Yn [cmds] | |--------------+---------------------------------------------| | Description: | Selects the profile to restore into the | | | active profile on power-up. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | i Y0 | Restore profile 0 on power-up. | |--------------+---------------------------------------------| | Y1 | Restore profile 1 on power-up. | +------------------------------------------------------------+ +------------------------------------------------------------+ | RESULT CODES | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] Qn [cmds] | |--------------+---------------------------------------------| | Description: | Enables modem to send result codes to the | | | DTE. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | i Q0 | Result codes enabled. | |--------------+---------------------------------------------| | Q1 | Result codes disabled. | |--------------+---------------------------------------------| | Q2 | Result codes enabled in originate mode | | | only. | +------------------------------------------------------------+ +------------------------------------------------------------+ | TONE DIALING TEST | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S16=n [cmds] | |--------------+---------------------------------------------| | Description: | Begins a tone dialing test. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | i S16=0 | Tone dialing test disabled. | |--------------+---------------------------------------------| | S16=2 | Tone dialing test enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | V.32 AND V.32bis MODULATIONS | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S34=n [cmds] | |--------------+---------------------------------------------| | Default: | 6 | |--------------+---------------------------------------------| | Range: | 0 - 15 | |--------------+---------------------------------------------| | Description: | Controls V.32 and V.32bis modulations. | |--------------+---------------------------------------------| | Bit | Value | Function | |------+-------+---------------------------------------------| | 0 | i 0 | V.32bis enabled. | | | | | | | 1 | V.32bis disabled. | |------+-------+---------------------------------------------| | 2, 1 | 11 | Not used. | |------+-------+---------------------------------------------| | 3 | i 0 | V.32 modulation disabled. | | | | | | | 1 | V.32 modulation enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | V.32 HANDSHAKE TIME | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S28=n [cmds] | |--------------+---------------------------------------------| | Default: | 8 | |--------------+---------------------------------------------| | Range: | 0 - 255 | |--------------+---------------------------------------------| | Unit: | .1 second | |--------------+---------------------------------------------| | Description: | Sets length of V.32 handshake. | +------------------------------------------------------------+