BUSINESSLAND INC. ================= 2400 BPS INTERNAL MODEM (REV. A) Card Type Data (asynchronous) Chip Set Unidentified Maximum Transfer Rate 2400bps Data Bus 8-bit ISA Data Modulation Protocol Bell 103/113/212A ITU-T V.22, V.22bis Error Correction/Compression MNP5, X.PC +------------------------------------------------------------+ | CONNECTIONS | |------------------------------------------------------------| | Function | Label | Function | Label | |------------------------------------------------------------| | Line out | CN1 | Line in | CN2 | +------------------------------------------------------------+ +------------------------------------------------------------+ | USER CONFIGURABLE SETTINGS | |------------------------------------------------------------| | Setting | Label | Position | |-----------------------------------------+-------+----------| | Factory configured - Do not alter | SW1/3 | Open | |-----------------------------------------+-------+----------| | Factory configured - Do not alter | SW1/4 | Open | +------------------------------------------------------------+ +------------------------------------------------------------+ | SERIAL PORT ADDRESS | |------------------------------------------------------------| | Setting | SW1/1 | SW1/2 | |--------------------+-------------------+-------------------| | COM1 (3F8h) | Closed | Open | |--------------------+-------------------+-------------------| | i COM2 (2F8h) | Open | Open | |--------------------+-------------------+-------------------| | COM3 (3E8h) | Closed | Closed | |--------------------+-------------------+-------------------| | COM4 (2E8h) | Open | Closed | +------------------------------------------------------------+ Proprietary AT Command Set +------------------------------------------------------------+ | AUTO-RELIABLE FALLBACK CHARACTER | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] %An [cmds] | |--------------+---------------------------------------------| | Default: | 0 | |--------------+---------------------------------------------| | Range: | 0-127 | |--------------+---------------------------------------------| | Unit: | ASCII | |--------------+---------------------------------------------| | Description: | Sets the character used as the | | | auto-reliable fallback character. %A0 will | | | disable this function. | +------------------------------------------------------------+ +------------------------------------------------------------+ | AUTO-RELIABLE TIME BUFFER CONFIGURATION | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Cn [cmds] | |--------------+---------------------------------------------| | Description: | Controls the handling of incoming data | | | during auto-reliable time period | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | i \C0 | Data is discarded | |--------------+---------------------------------------------| | \C1 | Data is buffered | |--------------+---------------------------------------------| | \C2 | Data is discarded, modem returns to normal | | | mode on receiving auto-reliable fallback | | | character | +------------------------------------------------------------+ +------------------------------------------------------------+ | BIT-MAPPED REGISTER S14 | |------------------------------------------------------------| | Format | AT [cmds] S14=n [cmds] | |--------------+---------------------------------------------| | Default: | Unidentified | |--------------+---------------------------------------------| | Range: | 0-174 | |--------------+---------------------------------------------| | Unit: | Bit-mapped | |--------------+---------------------------------------------| | Description: | Controls echo, result codes, result code | | | display, dial mode, and answer/originate | | | mode. | |--------------+---------------------------------------------| | Bit | Value | Function | |------+-------+---------------------------------------------| | 0 | 0 | Not used | |------+-------+---------------------------------------------| | 1 | 0 | Command echo disabled | | | | | | | 1 | Command echo enabled | |------+-------+---------------------------------------------| | 2 | 0 | Result codes enabled | | | | | | | 1 | Result codes disabled | |------+-------+---------------------------------------------| | 3 | 0 | Display result codes in numeric format | | | | | | | 1 | Display result codes in verbose format | |------+-------+---------------------------------------------| | 4 | 0 | Not used | |------+-------+---------------------------------------------| | 5 | 0 | Tone dial enabled | | | | | | | 1 | Pulse dial enabled | |------+-------+---------------------------------------------| | 6 | 0 | Not used | |------+-------+---------------------------------------------| | 7 | 0 | Answer mode enabled | | | | | | | 1 | Originate mode enabled | +------------------------------------------------------------+ +------------------------------------------------------------+ | BIT-MAPPED REGISTER S21 | |------------------------------------------------------------| | Format | AT [cmds] S21=n [cmds] | |--------------+---------------------------------------------| | Default: | Unidentified | |--------------+---------------------------------------------| | Range: | 0-184 | |--------------+---------------------------------------------| | Unit: | Bit-mapped | |--------------+---------------------------------------------| | Description: | Selects low DTR action, DCD signal, and the | | | long space disconnect function. | |--------------+---------------------------------------------| | Bit | Value | Function | |------+-------+---------------------------------------------| | 2 - | 0 | Not used. | | 0 | | | |------+-------+---------------------------------------------| | 4, 3 | 00 | DTR Forced | | | | | | | 01 | Modem goes to command mode on low DTR | | | | | | | 10 | Modem disconnects on low DTR. Auto-Answer | | | | is disabled. | | | 11 | | | | | Modem is initialized on low DTR | |------+-------+---------------------------------------------| | 5 | 0 | DCD forced high | | | | | | | 1 | DCD normal | |------+-------+---------------------------------------------| | 6 | 0 | Not used | |------+-------+---------------------------------------------| | 7 | 0 | Long space disconnect function disabled | | | | | | | 1 | Long space disconnect function enabled | +------------------------------------------------------------+ +------------------------------------------------------------+ | BIT-MAPPED REGISTER S22 | |------------------------------------------------------------| | Format | AT [cmds] S22=n [cmds] | |--------------+---------------------------------------------| | Default: | Unidentified | |--------------+---------------------------------------------| | Range: | 0-252 | |--------------+---------------------------------------------| | Unit: | Bit-mapped | |--------------+---------------------------------------------| | Description: | Controls speaker controls, limits results | | | codes, and make/break ratio. | |--------------+---------------------------------------------| | Bit | Value | Function | |------+-------+---------------------------------------------| | 1, 0 | 0 | Not used | |------+-------+---------------------------------------------| | 3, 2 | 00 | Speaker off | | | | | | | 01 | Speaker off on carrier | | | | | | | 10 | Speaker always on | | | | | | | 11 | Speaker on during handshake | |------+-------+---------------------------------------------| | 6, | 000 | Busy and dialtone detection disabled, | | 5, 4 | | result codes 0-4 enabled. | | | 100 | | | | | Busy and dialtone detection disabled, | | | 101 | result codes 0-5, 10 enabled. | | | | | | | 110 | Busy tone detection disabled, dialtone | | | | detection enabled, result codes 0-6, 10 | | | 111 | enabled. | | | | | | | | Busy tone detection enabled, dialtone | | | | detection disabled, result codes 0-5, 7, 10 | | | | enabled. | | | | | | | | Busy and dialtone detection enabled, result | | | | codes 0-7, 10 enabled. | |------+-------+---------------------------------------------| | 7 | 0 | 39/61ms at 10pps (North America) | | | | | | | 1 | 33/67ms at 10pps (Europe) | +------------------------------------------------------------+ +------------------------------------------------------------+ | BIT-MAPPED REGISTER S23 | |------------------------------------------------------------| | Format | AT [cmds] S23=n [cmds] | |--------------+---------------------------------------------| | Default: | Unidentified | |--------------+---------------------------------------------| | Range: | 0-187 | |--------------+---------------------------------------------| | Unit: | Bit-mapped | |--------------+---------------------------------------------| | Description: | Grants/denies remote digital loopback, | | | controls DTE rate and parity, and sets | | | guard tone. | |--------------+---------------------------------------------| | Bit | Value | Function | |------+-------+---------------------------------------------| | 0 | 0 | Remote digital loopback denied | | | | | | | 1 | Remote digital loopback allowed | |------+-------+---------------------------------------------| | 3, | 000 | Sets serial port speed to 0-300bps | | 2, 1 | | | | | 010 | Sets serial port speed to 1200bps | | | | | | | 011 | Sets serial port speed to 2400bps | | | | | | | 101 | Sets serial port speed to 9600bps | |------+-------+---------------------------------------------| | 5,4 | 00 | Parity even | | | | | | | 01 | Space Parity | | | | | | | 10 | Parity odd | | | | | | | 11 | Mark/No Parity | |------+-------+---------------------------------------------| | 7, 6 | 00 | Guard tone disabled | | | | | | | 01 | Guard tone 550Hz enabled | | | | | | | 10 | Guard tone 1800Hz enabled | +------------------------------------------------------------+ +------------------------------------------------------------+ | COMPRESSION | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] %Cn [cmds] | |--------------+---------------------------------------------| | Description: | Selects data compression | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | %C0 | Data compression disabled | |--------------+---------------------------------------------| | i %C1 | Data compression enabled | +------------------------------------------------------------+ +------------------------------------------------------------+ | DISPLAY CURRENT COMMAND STATUS | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] \S [cmds] | |--------------+---------------------------------------------| | Description: | Displays current setting of modem commands | +------------------------------------------------------------+ +------------------------------------------------------------+ | CONNECT MODE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Nn [cmds] | |--------------+---------------------------------------------| | Description: | Sets connect mode | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | \N0 | Normal mode enabled | |--------------+---------------------------------------------| | i \N1 | Direct mode enabled | |--------------+---------------------------------------------| | \N2 | MNP reliable mode enabled | |--------------+---------------------------------------------| | \N3 | MNP auto-reliable mode enabled | |--------------+---------------------------------------------| | \N4 | X.PC mode only enabled | |--------------+---------------------------------------------| | \N5 | MNP/X.PC answer mode enabled | +------------------------------------------------------------+ +------------------------------------------------------------+ | CONVERT TO RELIABLE MODE | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] \Y [cmds] | |--------------+---------------------------------------------| | Description: | Initiates reliable mode link | +------------------------------------------------------------+ +------------------------------------------------------------+ | DIAL | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] D<#> [cmds] | |--------------+---------------------------------------------| | Description: | Dials telephone number according to any | | | modifiers included in the string | |--------------+---------------------------------------------| | Modifier | Function | |--------------+---------------------------------------------| | D, | Dialing paused for amount of time specified | | | in S8 register | |--------------+---------------------------------------------| | DT | Tone dialing enabled | |--------------+---------------------------------------------| | DP | Pulse dialing enabled | |--------------+---------------------------------------------| | DR | Reverse mode | |--------------+---------------------------------------------| | DS=n | Number in memory location n dialed | |--------------+---------------------------------------------| | D; | Modem returned to command mode after | | | dialing. The semicolon can only be placed | | | at the end of the dial command | |--------------+---------------------------------------------| | D! | Flash function initiated. Modem commanded | | | to go on-hook for specified time | |--------------+---------------------------------------------| | DW | Dialing resumed following dial tone | | | detection | |--------------+---------------------------------------------| | D@ | Modem waits for a ring-back signal followed | | | by 5 seconds of silence prior to executing | | | the rest of the dial string | |--------------+---------------------------------------------| | DX | Modem in X.PC mode for duration of call | |--------------+---------------------------------------------| | DM | Modem in MNP auto-reliable mode for | | | duration of call | |--------------+---------------------------------------------| | DV | Modem in X.PC mode, send X.PC request | | | string. | +------------------------------------------------------------+ +------------------------------------------------------------+ | DISPLAY ALL S-REGISTERS | |------------------------------------------------------------| | Type | Immediate | |-------------+----------------------------------------------| | Format | AT [cmds] %R [cmds] | |-------------+----------------------------------------------| | Description | Displays a value of all S-registers | +------------------------------------------------------------+ +------------------------------------------------------------+ | DSR AND CTS SIGNALS | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Dn [cmds] | |--------------+---------------------------------------------| | Description: | Sets the function of the DSR and CTS | | | signals | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | i \D0 | DSR and CTS forced high | |--------------+---------------------------------------------| | \D1 | DSR forced high and CTS follows CD | +------------------------------------------------------------+ +------------------------------------------------------------+ | FLOW CONTROL | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Gn [cmds] | |--------------+---------------------------------------------| | Description: | Selects modem port flow control | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | i \G0 | Flow control disabled | |--------------+---------------------------------------------| | \G1 | Flow control enabled | +------------------------------------------------------------+ +------------------------------------------------------------+ | FLOW CONTROL TYPE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Qn [cmds] | |--------------+---------------------------------------------| | Description: | Sets type of flow control used by modem | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | i \Q0 | Flow control disabled | |--------------+---------------------------------------------| | \Q1 | XON/XOFF flow control enabled | |--------------+---------------------------------------------| | \Q2 | CTS flow control to DTE enabled | |--------------+---------------------------------------------| | \Q3 | RTS/CTS flow control enabled | +------------------------------------------------------------+ +------------------------------------------------------------+ | INACTIVITY TIMER | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Tn [cmds] | |--------------+---------------------------------------------| | Default: | 0 | |--------------+---------------------------------------------| | Range: | 0-90 | |--------------+---------------------------------------------| | Unit: | 1 minute | |--------------+---------------------------------------------| | Description: | Sets the length of time that the modem does | | | not receive information before it | | | disconnects | +------------------------------------------------------------+ +------------------------------------------------------------+ | LOCK SERIAL PORT | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Jn [cmds] | |--------------+---------------------------------------------| | Description: | Sets operation of serial port speed | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | i \J0 | Serial speed locked | |--------------+---------------------------------------------| | \J1 | Serial speed follows connect speed | +------------------------------------------------------------+ +------------------------------------------------------------+ | EXTENDED RESULT CODES | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Vn [cmds] | |--------------+---------------------------------------------| | Description: | Selects extended result codes | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | i \V0 | Standard AT result codes enabled | |--------------+---------------------------------------------| | \V1 | Error correction result codes enabled | +------------------------------------------------------------+ +------------------------------------------------------------+ | ON-LINE IN RELIABLE MODE | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] \O [cmds] | |--------------+---------------------------------------------| | Description: | Returns to on-line and requests reliable | | | mode connection | +------------------------------------------------------------+ +------------------------------------------------------------+ | ON-LINE STATE/RDL TEST | |------------------------------------------------------------| | Type | Configuration | |-------------+----------------------------------------------| | Format | AT [cmds] On [cmds] | |-------------+----------------------------------------------| | Description | Starts/ends remote digital loopback test and | | | puts the modem in on-line command mode | |-------------+----------------------------------------------| | Command | Function | |-------------+----------------------------------------------| | O0 | Return to on-line state | |-------------+----------------------------------------------| | O1 | End remote digital loopback test and return | | | to on-line state | |-------------+----------------------------------------------| | O2 | Begin remote digital loopback test and | | | return to on-line state | +------------------------------------------------------------+ +------------------------------------------------------------+ | PACKET TRANSMISSION DELAY | |------------------------------------------------------------| | Type | Register | |-------------+----------------------------------------------| | Format | AT [cmds] S50=n [cmds] | |-------------+----------------------------------------------| | Default | 25 | |-------------+----------------------------------------------| | Range | 10-255 | |-------------+----------------------------------------------| | Unit | 1 ms | |-------------+----------------------------------------------| | Description | Sets the maximum delay preceding a character | | | from DTE until X.PC block is sent | +------------------------------------------------------------+ +------------------------------------------------------------+ | REPORT INFORMATION | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] In [cmds] | |--------------+---------------------------------------------| | Description: | Displays modem properties | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | I0 | Reports product code | |--------------+---------------------------------------------| | I1 | Reports checksum | |--------------+---------------------------------------------| | I2 | Reports checksum result | +------------------------------------------------------------+ +------------------------------------------------------------+ | RETURN TO RELIABLE MODE | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] \Z [cmds] | |--------------+---------------------------------------------| | Description: | Ends reliable mode link, initiate return to | | | normal mode | +------------------------------------------------------------+ +------------------------------------------------------------+ | TEST MODES | |------------------------------------------------------------| | Format | AT [cmds] S16=n [cmds] | |--------------+---------------------------------------------| | Default: | Unidentified | |--------------+---------------------------------------------| | Range: | 0-125 | |--------------+---------------------------------------------| | Unit: | Bit-mapped | |--------------+---------------------------------------------| | Description: | Controls loopback tests, analog, digital, | | | remote digital, and self tests. | |--------------+---------------------------------------------| | Bit | Value | Function | |------+-------+---------------------------------------------| | 0 | 0 | Local analog loopback not in progress | | | | | | | 1 | Local analog loopback in progress | |------+-------+---------------------------------------------| | 1 | 0 | Not used | |------+-------+---------------------------------------------| | 2 | 0 | Local digital loopback not in progress | | | | | | | 1 | Local digital loopback in progress | |------+-------+---------------------------------------------| | 3 | 0 | Modem not in remote digital loopback | | | | | | | 1 | Remote digital loopback in progress | |------+-------+---------------------------------------------| | 4 | 0 | Remote digital loopback not requested | | | | | | | 1 | Remote digital loopback requested | |------+-------+---------------------------------------------| | 5 | 0 | Remote digital loopback w/ self-test not in | | | | progress | | | 1 | | | | | Remote digital loopback w/ self-test in | | | | progress | |------+-------+---------------------------------------------| | 6 | 0 | Local analog loopback w/ self-test not in | | | | progress | | | 1 | | | | | Local analog loopback w/ self-test in | | | | progress | +------------------------------------------------------------+ +------------------------------------------------------------+ | XON/XOFF PASS-THROUGH | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Xn [cmds] | |--------------+---------------------------------------------| | Description: | Selects whether XON/XOFF signals are sent | | | to remote modem | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | i \X0 | XON/XOFF signals trapped by local modem | |--------------+---------------------------------------------| | \X1 | XON/XOFF passed through local modem | +------------------------------------------------------------+ +------------------------------------------------------------+ | X.PC DISCONNECT | |------------------------------------------------------------| | Type | Immediate | |-------------+----------------------------------------------| | Format | AT [cmds] %H [cmds] | |-------------+----------------------------------------------| | Description | Modem will disconnect but still remain | | | connected to network node | +------------------------------------------------------------+