UNIDENTIFIED ============ 2400U/BU MODEM Card Type Modem (asynchronous) Chip Set Unidentified Maximum Data Rate 2400bps Data Bus 8-bit ISA Data Modulation Protocol Bell 103/212A ITU-T V.21, V.22, V.22bis Error Correction/Compression MNP5, V.42 +------------------------------------------------------------+ | CONNECTIONS | |------------------------------------------------------------| | Function | Label | Function | Label | |------------------------------------------------------------| | Line in | CN1 | Line out | CN2 | +------------------------------------------------------------+ +------------------------------------------------------------+ | SERIAL PORT ADDRESS | |------------------------------------------------------------| | Setting | SW1/1 | SW1/2 | |--------------------+-------------------+-------------------| | COM1 (3F8h) | On | On | |--------------------+-------------------+-------------------| | COM2 (2F8h) | Off | On | |--------------------+-------------------+-------------------| | COM3 (3E8h) | On | Off | |--------------------+-------------------+-------------------| | COM4 (2E8h) | Off | Off | +------------------------------------------------------------+ +------------------------------------------------------------+ | INTERRUPT | |------------------------------------------------------------| | Setting | SW2/1 | SW2/2 | |--------------------+-------------------+-------------------| | 2 | Off | Off | |--------------------+-------------------+-------------------| | 3 | On | Off | |--------------------+-------------------+-------------------| | 4 | Off | On | |--------------------+-------------------+-------------------| | 5 | Off | Off | +------------------------------------------------------------+ 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: | 42 | |--------------+---------------------------------------------| | Range: | 0-174 | |--------------+---------------------------------------------| | Unit: | Bit-mapped | |--------------+---------------------------------------------| | Description: | Controls echo, result codes and display, | | | dial mode, and answer/originate mode. | |--------------+---------------------------------------------| | Bit | Value | Function | |------+-------+---------------------------------------------| | 0 | 0 | Not used | |------+-------+---------------------------------------------| | 1 | 0 | Command echo disabled | | | | | | | i 1 | Command echo enabled | |------+-------+---------------------------------------------| | 2 | i 0 | Result codes enabled | | | | | | | 1 | Result codes disabled | |------+-------+---------------------------------------------| | 3 | 0 | Display result codes in numeric format | | | | | | | i 1 | Display result codes in verbose format | |------+-------+---------------------------------------------| | 4 | 0 | Not used | |------+-------+---------------------------------------------| | 5 | 0 | Tone dial enabled | | | | | | | i 1 | Pulse dial enabled | |------+-------+---------------------------------------------| | 6 | 0 | Not used | |------+-------+---------------------------------------------| | 7 | i 0 | Answer mode enabled | | | | | | | 1 | Originate mode enabled | +------------------------------------------------------------+ +------------------------------------------------------------+ | BIT-MAPPED REGISTER S21 | |------------------------------------------------------------| | Format | AT [cmds] S21=n [cmds] | |--------------+---------------------------------------------| | Default: | 48 | |--------------+---------------------------------------------| | Range: | 0-252 | |--------------+---------------------------------------------| | Unit: | Bit-mapped | |--------------+---------------------------------------------| | Description: | Selects jack type, CTS/DCD/DSR signals, low | | | DTR action, and the long space disconnect | | | function. | |--------------+---------------------------------------------| | Bit | Value | Function | |------+-------+---------------------------------------------| | 1, 0 | 0 | Not used | |------+-------+---------------------------------------------| | 2 | i 0 | CTS follows RTS | | | | | | | 1 | CTS forced high | |------+-------+---------------------------------------------| | 4, 3 | 00 | DTR signal ignored | | | | | | | 01 | Modem goes to command mode on low DTR | | | | | | | i 10 | Modem disconnects on low DTR; Auto-Answer | | | | is disabled. | | | 11 | | | | | Modem is initialized on low DTR | |------+-------+---------------------------------------------| | 5 | 0 | DCD forced high | | | | | | | i 1 | DCD normal | |------+-------+---------------------------------------------| | 6 | i 0 | DSR forced high | | | | | | | 1 | DSR normal | |------+-------+---------------------------------------------| | 7 | i 0 | Long space disconnect function disabled | | | | | | | 1 | Long space disconnect function enabled | +------------------------------------------------------------+ +------------------------------------------------------------+ | BIT-MAPPED REGISTER S22 | |------------------------------------------------------------| | Format | AT [cmds] S22=n [cmds] | |--------------+---------------------------------------------| | Default: | 118 | |--------------+---------------------------------------------| | Range: | 0-255 | |--------------+---------------------------------------------| | Unit: | Bit-mapped | |--------------+---------------------------------------------| | Description: | Controls speaker volume and controls, | | | limits results codes, and make/break ratio. | |--------------+---------------------------------------------| | Bit | Value | Function | |------+-------+---------------------------------------------| | 1, 0 | 00 | Off volume | | | | | | | 01 | Low level volume | | | | | | | i 10 | Medium level volume | | | | | | | 11 | High level volume | |------+-------+---------------------------------------------| | 3, 2 | 00 | Speaker off | | | | | | | i 01 | Speaker off on carrier | | | | | | | 10 | Speaker always on | | | | | | | 11 | Speaker on during handshake | |------+-------+---------------------------------------------| | 6, | 000 | Basic result codes only enabled | | 5, 4 | | | | | 100 | Basic and connection speed result codes | | | | enabled | | | 101 | | | | | Basic and connection speed result codes and | | | 110 | dialtone detection enabled | | | | | | | i 111 | All result codes except dialtone detection | | | | enabled | | | | | | | | All result codes enabled | |------+-------+---------------------------------------------| | 7 | i 0 | 39/61ms at 10pps (North America) | | | | | | | 1 | 33/67ms at 10pps (Europe) | +------------------------------------------------------------+ +------------------------------------------------------------+ | BIT-MAPPED REGISTER S23 | |------------------------------------------------------------| | Format | AT [cmds] S23=n [cmds] | |--------------+---------------------------------------------| | Default: | 6 | |--------------+---------------------------------------------| | Range: | 0-183 | |--------------+---------------------------------------------| | Unit: | Bit-mapped | |--------------+---------------------------------------------| | Description: | Grants/denies remote digital loopback, | | | controls DTE rate and parity, and sets | | | guard tone. | |--------------+---------------------------------------------| | Bit | Value | Function | |------+-------+---------------------------------------------| | 0 | i 0 | Remote digital loopback allowed | | | | | | | 1 | Remote digital loopback denied | |------+-------+---------------------------------------------| | 2, 1 | 00 | Sets serial port speed to 0-300bps | | | | | | | 10 | Sets serial port speed to 1200bps | | | | | | | i 11 | Sets serial port speed to 2400bps | |------+-------+---------------------------------------------| | 3 | 0 | Not used | |------+-------+---------------------------------------------| | 5,4 | i 00 | Parity even | | | | | | | 01 | Space Parity | | | | | | | 10 | Parity odd | | | | | | | 11 | Mark Parity | |------+-------+---------------------------------------------| | 7, 6 | i 00 | Guard tone disabled | | | | | | | 01 | Guard tone 550Hz enabled | | | | | | | 10 | Guard tone 1800Hz enabled | +------------------------------------------------------------+ +------------------------------------------------------------+ | BIT-MAPPED REGISTER S27 | |------------------------------------------------------------| | Format | AT [cmds] S27=n [cmds] | |---------------+--------------------------------------------| | Default: | 64 | |---------------+--------------------------------------------| | Range: | 0-68 | |---------------+--------------------------------------------| | Unit: | Bit-mapped | |---------------+--------------------------------------------| | Description: | Selects line type, and ITU-T/Bell modes. | |---------------+--------------------------------------------| | Bit | Value | Function | |-------+-------+--------------------------------------------| | 1, 0 | 0 | Not used | |-------+-------+--------------------------------------------| | 2 | i 0 | Switched line | | | | | | | 1 | Leased line | |-------+-------+--------------------------------------------| | 5 - 3 | 0 | Not used | |-------+-------+--------------------------------------------| | 6 | 0 | ITU/T mode | | | | | | | i 1 | Bell mode | +------------------------------------------------------------+ +------------------------------------------------------------+ | BREAK SEND | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Bn [cmds] | |--------------+---------------------------------------------| | Default: | 3 | |--------------+---------------------------------------------| | Range: | 1-9 | |--------------+---------------------------------------------| | Unit: | .1 second | |--------------+---------------------------------------------| | Description: | Sends break to modem | +------------------------------------------------------------+ +------------------------------------------------------------+ | BREAK TYPE | |------------------------------------------------------------| | Type: | Configuration | |---------------------+--------------------------------------| | Format: | AT [cmds] \Kn [cmds] | |---------------------+--------------------------------------| | Description: | Configures action of break signal | |------------------------------------------------------------| | Command | Break from DTE | Modem | Break from | | | | receives \B | DTE | | | Reliable/Normal | | | | | mode | | Direct mode | |-----------+-----------------+--------------+---------------| | \K0 | Online command | Break sent | Send break to | | | mode enabled, | to remote | remote modem | | | send no break | modem and | immediately, | | | to remote modem | buffered | Online | | | | cleared | command mode | | | | | enabled | |-----------+-----------------+--------------+---------------| | \K1 | Break sent to | Break sent | Send break to | | | remote modem | to remote | remote modem | | | and buffered | modem and | immediately | | | cleared | buffered | | | | | cleared | | |-----------+-----------------+--------------+---------------| | \K2 | Online command | Send break | Send break to | | | mode enabled, | to remote | remote modem | | | send no break | modem | immediately, | | | to remote modem | immediately | Online | | | | | command mode | | | | | enabled | |-----------+-----------------+--------------+---------------| | \K3 | Send break to | Send break | Send break to | | | remote modem | to remote | remote modem | | | immediately | modem | immediately | | | | immediately | | |-----------+-----------------+--------------+---------------| | \K4 | Online command | Send break | Send break to | | | mode enabled, | with | remote modem | | | send no break | transmitted | immediately, | | | to remote modem | data | Online | | | | | command mode | | | | | enabled | |-----------+-----------------+--------------+---------------| | i \K5 | Send break with | Send break | Send break to | | | transmitted | with | remote modem | | | data | transmitted | immediately | | | | data | | +------------------------------------------------------------+ +------------------------------------------------------------+ | BAUD RATE ADJUST | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Jn [cmds] | |--------------+---------------------------------------------| | Description: | Allows baud rate to follow serial port | | | speed | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | i \J0 | Baud rate adjust disabled | |--------------+---------------------------------------------| | \J1 | Baud rate adjust enabled | +------------------------------------------------------------+ +------------------------------------------------------------+ | COMPRESSION | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] %Cn [cmds] | |--------------+---------------------------------------------| | Description: | Selects data compression | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | %C0 | Data compression disabled | |--------------+---------------------------------------------| | i %C1 | Data compression enabled | +------------------------------------------------------------+ +------------------------------------------------------------+ | CONFIGURATION PROFILES | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] \Sn [cmds] | |--------------+---------------------------------------------| | Description: | Displays active configuration profiles and | | | stored profile 0 and 1. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CONNECT MODE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Nn [cmds] | |--------------+---------------------------------------------| | Description: | Controls the type of connection the modem | | | will operate in | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | i \N0 | Normal mode enabled | |--------------+---------------------------------------------| | \N1 | Direct mode enabled | |--------------+---------------------------------------------| | \N2 | MNP reliable mode enabled | |--------------+---------------------------------------------| | \N3 | MNP auto-reliable mode enabled | |--------------+---------------------------------------------| | \N4 | LAP-M reliable mode with detection enabled | |--------------+---------------------------------------------| | \N5 | LAP-M auto-reliable mode with detection | | | enabled | |--------------+---------------------------------------------| | \N6 | LAP-M reliable mode without detection | | | enabled | |--------------+---------------------------------------------| | \N7 | LAP-M auto-reliable mode without detection | | | enabled | +------------------------------------------------------------+ +------------------------------------------------------------+ | DISPLAY STORED NUMBERS | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] \F [cmds] | |--------------+---------------------------------------------| | Description: | Displays all stored phone numbers | +------------------------------------------------------------+ +------------------------------------------------------------+ | ECHO DATA | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \En [cmds] | |--------------+---------------------------------------------| | Description: | Enables modem to echo received data | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | i \E0 | Data echo disabled | |--------------+---------------------------------------------| | \E1 | Data echo enabled | +------------------------------------------------------------+ +------------------------------------------------------------+ | EXTENDED RESULT CODES | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Vn [cmds] | |--------------+---------------------------------------------| | Description: | Selects extended result codes | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | \V0 | Extended result codes disabled | |--------------+---------------------------------------------| | i \V1 | Extended result codes enabled | +------------------------------------------------------------+ +------------------------------------------------------------+ | EXTENDED RESULT CODES - MNP | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] -Mn [cmds] | |--------------+---------------------------------------------| | Description: | Selects the display of MNP result codes | | | with extended result codes | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | -M0 | Disable display of MNP connection service | | | class | |--------------+---------------------------------------------| | i -M1 | Enable display of MNP connection service | | | class while extended result codes are | | | enabled | +------------------------------------------------------------+ +------------------------------------------------------------+ | FLOW CONTROL TYPE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Qn [cmds] | |--------------+---------------------------------------------| | Description: | Sets type of flow control used by modem | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | \Q0 | Flow control disabled | |--------------+---------------------------------------------| | \Q1 | XON/XOFF flow control enabled | |--------------+---------------------------------------------| | i \Q2 | CTS Unidirectional flow control enabled | |--------------+---------------------------------------------| | \Q3 | Bidirectional CTS/RTS 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. | +------------------------------------------------------------+ +------------------------------------------------------------+ | MAXIMUM BLOCK SIZE FOR TRANSMISSION | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \An [cmds] | |--------------+---------------------------------------------| | Description: | Sets the maximum transmittable block size | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | \A0 | MNP block size is 64 characters | |--------------+---------------------------------------------| | \A1 | MNP block size is 128 characters | |--------------+---------------------------------------------| | \A2 | MNP block size is 192 characters | |--------------+---------------------------------------------| | i \A3 | MNP block size is 256 characters | +------------------------------------------------------------+ +------------------------------------------------------------+ | PROTOCOL/SPEED | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] %Bn [cmds] | |--------------+---------------------------------------------| | Description: | Selects the initial DCE speed | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | %B0 | Select 300bps speed | |--------------+---------------------------------------------| | %B1 | Select 1200bps speed | |--------------+---------------------------------------------| | i %B2 | Select 2400bps speed | +------------------------------------------------------------+ +------------------------------------------------------------+ | TEST MODES | |------------------------------------------------------------| | Format | AT [cmds] S16=n [cmds] | |--------------+---------------------------------------------| | Default: | 0 | |--------------+---------------------------------------------| | Range: | 0-125 | |--------------+---------------------------------------------| | Unit: | Bit-mapped | |--------------+---------------------------------------------| | Description: | Controls loopback tests, analog, digital, | | | remote digital, and self tests. | |--------------+---------------------------------------------| | Bit | Value | Function | |------+-------+---------------------------------------------| | 0 | i 0 | Local analog loopback not in progress | | | | | | | 1 | Local analog loopback in progress | |------+-------+---------------------------------------------| | 1 | 0 | Not used | |------+-------+---------------------------------------------| | 2 | i 0 | Local digital loopback not in progress | | | | | | | 1 | Local digital loopback in progress | |------+-------+---------------------------------------------| | 3 | i 0 | Modem not in remote digital loopback | | | | | | | 1 | Remote digital loopback in progress | |------+-------+---------------------------------------------| | 4 | i 0 | Remote digital loopback not in progress | | | | | | | 1 | Remote digital loopback in progress | |------+-------+---------------------------------------------| | 5 | i 0 | Remote digital loopback w/ self-test not in | | | | progress | | | 1 | | | | | Remote digital loopback w/ self-test in | | | | progress | |------+-------+---------------------------------------------| | 6 | i 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 | +------------------------------------------------------------+