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 [Image] 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 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 \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 0 Not used. 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, 5, 4 000 Busy and dialtone detection disabled, result codes 0-4 enabled. 100 Busy and dialtone detection disabled, result 101 codes 0-5, 10 enabled. 110 Busy tone detection disabled, dialtone detection enabled, result codes 0-6, 10 enabled. 111 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, 2, 1 000 Sets serial port speed to 0-300bps 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 %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 \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 \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 \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 \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 \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 \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 \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