ARCHTEK AMERICA CORPORATION 2834A Modem Type Data (synchronous/asynchronous)/Fax Maximum Data Rate 28.8Kbps Maximum Fax Rate 14.4Kbps Data Bus External Fax Class Class I & II Data Modulation Protocol Bell 103J/212A ITU-T V.21, V.22, V.22bis, V.23, V.32, V.32bis, V.34 AT&T V.32terbo Fax Modulation Protocol ITU-T V.17, V.21CH2, V.27ter, V.29 Error Correction/Compression MNP5, V.42, V.42bis [Image] CONNECTIONS Purpose Location Purpose Location Line out CN1 AC power CN4 Line in CN2 Power switch SW1 RS-232/422 CN3 Proprietary AT Command Set AUTO FALLBACK CHARACTER Type: Register Format: AT [cmds] S43=n [cmds] Example: AT S43=13 Default: 13 Range: 0 - 127 Unit: ASCII Description: Set auto fallback character during MNP negotiation. Notes S43=0, disabled. S43=(1 - 127), enabled. AUTO FALL FORWARD/FALLBACK Type: Configuration Format: AT [cmds] %Gn [cmds] Example: AT %G &W Description: Selects auto fallback in V.22bis and V.32 only. Command Function » %G0 Fallback disabled. %G1 Fallback enabled. AUTO-RELIABLE FALLBACK CHARACTER Type: Configuration Format: AT [cmds] %An [cmds] Example: AT%A0 Default: 13 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] Example: AT \C0 &W 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. AUTO-RETRAIN Type: Configuration Format: AT [cmds] %En [cmds] Example: AT %E0 Description: Selects auto-retrain mode. Command Function %E0 Auto-retrain disabled. » %E1 Auto-retrain enabled. AUTO SLEEP TIMER Format AT [cmds] S46=n [cmds] Example: AT S46= 255 Default: 255 Range: 0 - 255 Unit: .1 second Description: Maximum duration of DTE and DCE inactivity allowed prior to initiating low-power sleep mode. BIT-MAPPED REGISTER S14 Format AT [cmds] S14? [cmds] Example: ATS14? Default: Read only Range: 0 - 255 Unit: Bit-mapped Description: Controls echo, quiet mode, result codes, dial mode, and originate/answer mode. Bit Value Meaning 0 0 Not used. 1 0 Command echo function disabled. 1 Command echo function enabled. 2 0 Result code sending disabled. 1 Result code sending enabled. 3 0 Numeric format enabled. 1 Verbose format enabled. 4 0 Not used. 5 0 Tone dialing mode enabled. 1 Pulse dialing mode enabled. 6 0 Result codes normal. 1 Result codes disabled in answer mode. 7 0 Answer mode enabled. 1 Originate mode enabled. BIT-MAPPED REGISTER S40 Format AT [cmds] S40=n [cmds] Example: AT S40=77 Default: 77 Range: 0 - 127 Unit: Bit-mapped Description: Controls active protocols and V.42 detection. Bit Value Function 0 0 Automatic mode-detection disabled » 1 In originate mode, handshake begins at line speed designated by the S37 register. Modem can shift to a slower speed if necessary. In answer mode, handshake attempted with the following protocols in order - V.FC, V.32bis, V.32, V.22bis, V.22 or Bell 212, V.21, and Bell 103 5 - 1 00110 Not used. 6 0 V.42 detection disabled. » 1 V.42 detection enabled. BIT-MAPPED REGISTER S44 Format AT [cmds] S44=n [cmds] Example: AT S44=7 Default: 7 Range: 0 - 23 Unit: Bit-mapped Description: Selects V.42 status, V.42bis, and fallback. Bit Value Function 0 0 V.42bis status disabled. » 1 V.42bis status enabled. 2, 1 00 V.42bis disabled. 01 V.42bis when transmitting enabled. 10 V.42bis when receiving enabled. » 11 V.42bis when transmitting/receiving enabled. 3 0 Not used. 4 » 0 Fallback disabled. 1 Fallback enabled. 7, 6, 5 0 Not used. BIT-MAPPED REGISTER S49 Type: Register Format: AT [cmds] S49=n [cmds] Example: AT S49=255 Description: Set maximum block size. Command Function S49=64 Maximum MNP block size is 64 characters. S49=127 Maximum MNP block size is 127 characters. S49=191 Maximum MNP block size is 191 characters. » S49=255 Maximum MNP block size is 255 characters. BIT-MAPPED REGISTER S51 Format AT [cmds] S51=n [cmds] Example: AT S51=40 Default: 3 Range: 0 - 115 Unit: Bit-mapped Description: selects flow control, Bit Value Function 2, 1, 0 000 Flow control disabled. 001 XON/XOFF flow control enabled. 010 CTS flow control to DTE enabled. » 011 RTS/CTS flow control enabled. 3 0 Not used. 4 » 0 Flow control disabled. 1 Flow control to XON/XOFF flow enabled. 5 » 0 Serial speed locked. 1 Serial speed follows connect speed. 7, 6 » 00 XON/XOFF signals trapped by local modem. 01 XON/XOFF passed through local modem. BIT-MAPPED REGISTER S54 Format AT [cmds] S54=n [cmds] Example: AT S54=69 Default: 0 Range: 0 - 131 Unit: Bit-mapped Description: Selects the communication protocol for data calls, and protocol result code. Bit Value Function 0 » 0 B2 is enabled. 1 B2 is not enabled. 1 » 0 B3 is enabled 1 B3 is not enabled. 6 - 2 0 Not used. 7 » 0 Protocol result code disabled. 1 Protocol result code enabled. BREAK SEND Type: Configuration Format: AT [cmds] \Bn [cmds] Example: AT \B0 &W Default: 0 Range: 1-9 Unit: .1 second Description: Sends break to modem. BREAK TYPE Type: Configuration Format: AT [cmds] \Kn [cmds] Example: AT \K1 Description: Configures action of break signal. Command Break from DTE Break from Modem Break from DTE receives \B remote modem Reliable/Normal mode Direct mode \K0 Enter command Send break to Buffers Buffers mode, do not remote modem cleared and cleared and send break to immediately, break sent to break sent to remote modem. then enter remote modem. DTE. command mode. \K1 Buffers cleared Send break to Buffers Buffers and break sent remote modem cleared and cleared and to remote immediately. break sent to break sent to modem. remote modem. DTE. \K2 Enter command Send break to Send break to Send break to mode, do not remote modem remote modem DTE send break to immediately, immediately. immediately. remote modem. then enter command mode. \K3 Send break to Send break to Send break to Send break to remote modem remote modem remote modem DTE immediately. immediately. immediately. immediately. \K4 Enter command Send break to Send break to Break sent mode, do not remote modem remote modem with received send break to immediately, with data to the remote modem. then enter transmitted DTE. command mode. data. » \K5 Send break with Send break to Send break to Break sent transmitted remote modem remote modem with received data. immediately. with data to the transmitted DTE. data. BTLZ STRING LENGTH Type: Register Format: AT [cmds] S58=n [cmds] Example: AT S58=32 Default: 32 Range: 6 - 64 Unit: Unidentified Description: Selects BTLZ string length. CALLING TONE Type: Configuration Format: AT [cmds] -Cn [cmds] Example: AT -C0 &W Description: Controls whether the DTE will allow the modem to send a 1300Hz calling tone when originating. Command Function » -C0 Disable calling tone. -C1 Enable calling tone. COMPRESSION Type: Configuration Format: AT [cmds] %Cn [cmds] Example: AT %C0 Description: Selects data compression. Command Function %C0 Data compression disabled. » %C1 Data compression enabled. CONNECT MESSAGE Type: Configuration Format: AT [cmds] S41=n [cmds] Example: AT S41=0 Description: Controls CONNECT message. Command Function » S41=0 CONNECT with DTE speed. S41=1 CONNECT with carrier, protocol, and compression. S41=2 CONNECT with DCE speed. CONNECT MODE Type: Configuration Format: AT [cmds] \Nn [cmds] Example: AT \N0 DT555-1212 Description: Sets connect mode. Command Function \N0 Normal mode enabled. \N1 Direct mode enabled. \N2 Reliable mode enabled. » \N3 Auto-reliable mode enabled. \N4 LAPM mode enabled. EXTENDED RESULT CODES Type: Configuration Format: AT [cmds] \Vn [cmds] Example: AT \V1 %C1 Description: Selects extended result codes. Command Function » \V0 Extended result codes disabled. \V1 Extended result codes enabled. FAX/DATA MODE Type: Register Format: AT [cmds] S50=n [cmds] Example: AT S50=0 &W Description: Choose data or FAX mode. Command Function » S50=0 Data mode enabled. S50=1 FAX mode enabled. FLOW CONTROL Type: Configuration Format: AT [cmds] \Gn [cmds] Example: AT \G0 &K3 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] Example: AT \Q0 A 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. FLOW CONTROL TYPE Type: Register Format: AT [cmds] S52=n [cmds] Example: AT &G1 S52=0 Description: Sets type of flow control used by modem. Command Function S52=0 Flow control disabled. S52=1 Not used. S52=2 Not used. » S52=3 CTS/RTS flow control enabled. S52=4 XON/XOFF pass-through flow control enabled. INACTIVITY TIMER Type: Configuration Format: AT [cmds] \Tn [cmds] Example: AT\T20 Default: 0 Range: 0-90 Unit: 1 minute Description: Sets the length of time that the modem does not receive information before it disconnects. LOCAL SERIAL PORT SPEED Type: Register Format: AT [cmds] S72=n [cmds] Example: AT S72=0 Description: Sets serial port speed. Command Function » S72=0 Sets speed automatically. S72=1 Sets 300bps speed. S72=2 Sets 600bps speed. S72=3 Sets 1200bps speed. S72=4 Sets 2400bps speed. S72=5 Sets 4800bps speed. S72=6 Sets 7200bps speed. S72=7 Sets 9600bps speed. S72=8 Sets 12Kbps speed. S72=9 Sets 14.4Kbps speed. S72=10 Sets 16.8Kbps speed. S72=11 Sets 19.2Kbps speed. S72=12 Sets 21.6Kbps speed. S72=13 Sets 24Kbps speed. S72=14 Sets 26.4Kbps speed. S72=15 Sets 28.8Kbps speed. S72=16 Sets 38.4Kbps speed. S72=17 Sets 57.6Kbps speed. S72=18 Sets 115.2Kbps speed. LOCK SERIAL PORT Type: Configuration Format: AT [cmds] \Jn [cmds] Example: AT \J0 Description: Sets operation of serial port speed. Command Function » \J0 Serial speed locked. \J1 Serial speed follows connect speed. MAXIMUM BLOCK SIZE FOR TRANSMISSION Type: Configuration Format: AT [cmds] \An [cmds] Example: AT \A3 %C1 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. » \A3 MNP block size is 256 characters. MODEM OPERATING MODE Type: Register Format: AT [cmds] S53=n [cmds] Example: AT S53=3 Description: Sets connect mode. Command Function S53=0 Normal mode enabled. S53=1 Direct mode enabled. S53=2 MNP reliable mode enabled. » S53=3 Auto-reliable mode enabled. S53=4 LAPM reliable mode enabled. MNP OPTIONS Type: Register Format: AT [cmds] S59=n [cmds] Example: AT S59=0 Description: Selects MNP5 status. Command Function S59=0 Data compression disabled. » S59=1 Data compression enabled. MNP STREAM/BLOCK MODE Type: Configuration Format: AT [cmds] \Ln [cmds] Example: AT \L1 DT555-1212 Description: Selects the transfer mode for MNP. Command Function \L0 Stream mode for MNP enabled. V.32 AUTO-RETRAIN Type: Register Format: AT [cmds] S42=n [cmds] Example: AT S42=0 &W Description: Controls V.32 Auto-retrain. Command Function S42=0 Auto-retrain disabled, hang up. » S42=1 Auto-retrain on line quality problem enabled. S42=2 Modem ignores line quality problems. V.42 DETECTION PHASE Type: Configuration Format: AT [cmds] -Jn [cmds] Example: AT -J0 &W Description: Controls V.42 detection. Command Function -J0 V.42 detection disabled. » -J1 V.42 detection enabled. V.42bis COMPRESSION CONTROL Type: Configuration Format: AT [cmds] "Hn [cmds] Example: AT "H0 &W Description: Controls V.42bis data compression Command Function "H0 V.42bis disabled. "H1 V.42bis when transmitting enabled. "H2 V.42bis when receiving enabled. » "H3 V.42bis when transmitting/receiving enabled. V.42bis MAXIMUM STRING LENGTH Type: Immediate Format: AT [cmds] "On [cmds] Example: AT "O32 Default: 32 Range: 6 - 250 Unit: ASCII character Description: Selects string size for V.42bis compression. XON/XOFF PASS-THROUGH Type: Configuration Format: AT [cmds] \Xn [cmds] Example: AT \X0 O 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.