MEGAHERTZ CORPORATION C524FM/Z324FM/Z524FM Modem Type Data (synchronous/asynchronous)/Fax/Voice Maximum Data Rate 2400bps Maximum Fax Rate 9600bps Data Bus Internal Fax Class Class I & II Data Modulation Protocol Bell 103A/212A ITU-T V.21, V.22, V.22bis Fax Modulation Protocol ITU-T V.21CH2, V.27ter, V.29 Error MNP5, V.42, V.42bis Correction/Compression V1287 Proprietary AT Command Set ACCEPT RELIABLE MODE Type: Immediate Format: AT [cmds] \U [cmds] Example: AT \U B1 Description: Accepts remote modem’s request for reliable link. AUTO-RELIABLE FALLBACK CHARACTER Type: Register Format: AT [cmds] %An [cmds] Example: AT %A20 Default: Unidentified 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 \C1 &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 %En Example: AT %E1 Description: Selects auto-retrain mode. Command Function %E0 Auto-retrain enabled. %E1 Auto-retrain disabled. BIT-MAPPED REGISTER S14 Format AT [cmds] S14=n [cmds] Example: AT S14=170 Default: 170 Range: 0 - 190 Unit: Bit-mapped Description: Controls command echo, result codes, dialing mode, and answer/originate mode. Bit Value Function 0 0 Not used. 1 0 Command echo off. 1 Command echo on. 2 0 Result codes enabled. 1 Result codes disabled. 3 0 Numeric result codes. 1 Verbose result codes. 4 1 Not used. 5 0 Tone dialing selected. 1 Pulse dialing selected. 6 0 Not used. 7 0 Answer mode selected. 1 Originate mode selected. BREAK SEND Type: Configuration Format: AT [cmds] \Bn [cmds] Example: AT \B3 &W 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 Modem receives Break received \B from remote modem \K0 Online command Break sent to Buffers mode enabled, remote modem and cleared, break send no break to buffered sent to DTE. remote modem. cleared. \K1 Break sent to Break sent to Buffers remote modem and remote modem and cleared, break buffered buffered sent to DTE. cleared. cleared. \K2 Online command Send break to Break sent mode enabled, remote modem immediately to send no break to immediately. DTE. remote modem. \K3 Send break to Send break to Break sent remote modem remote modem immediately to immediately. immediately. DTE. \K4 Online command Send break with Break sent with mode enabled, transmitted received data send no break to data. to the DTE. remote modem. \K5 Send break with Send break with Break sent with transmitted transmitted received data data. data. to the DTE. COMPRESSION Type: Configuration Format: AT [cmds] %Cn [cmds] Example: AT *EC0 %C1 *AP0 Description: Selects data compression. Command Function %C0 Data compression disabled. %C1 Data compression enabled. CONNECT MODE Type: Configuration Format: AT [cmds] \Nn [cmds] Example: AT \N1 DT555-1212 Description: Sets connect mode. Command Function \N1 Normal mode. \N0 Direct mode. \N2 Reliable mode. \N3 Auto-reliable mode. CONVERT TO RELIABLE MODE Type: Immediate Format: AT [cmds] \Y [cmds] Example: AT \Y Description: Initiates reliable mode link. DIAL STORED PHONE NUMBER Type: Immediate Format: AT [cmds] Dn Example: AT M0 D3 Description: Dials a stored phone number. DISPLAY CURRENT COMMAND STATUS Type: Immediate Format: AT [cmds] \S [cmds] Example: AT &Z2=9W1-303-555-1212 \S Description: Displays current setting of modem commands. DISPLAY STORED NUMBERS Type: Immediate Format: AT [cmds] \F? [cmds] Example: AT \P2=9W1-303-555-1212 \F? Description: Displays all stored phone numbers. ECHO DATA Type: Configuration Format: AT [cmds] \En [cmds] \Example: AT \E0 Description: Enables modem to echo received data. Command Function \E0 Data echo disabled. \E1 Data echo enabled. EXTENDED RESULT CODES Type: Configuration Format: AT [cmds] \Vn [cmds] Example: AT \V1 %C1 Description: Selects MNP result codes. Command Function \V0 MNP result codes disabled. \V1 MNP result codes enabled. FLOW CONTROL Type: Configuration Format: AT [cmds] \Gn [cmds] Example: AT G1 &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 \Q5 Description: Sets type of flow control used by modem. Command Function \Q0 Flow control disabled. \Q1 Bidirectional XON/XOFF flow control enabled. \Q2 CTS flow control by DCE enabled. \Q3 Bidirectional CTS/RTS flow control enabled. \Q4 XON/XOFF flow control by DCE enabled. INACTIVITY TIMER Type: Register Format: AT [cmds] \Tn [cmds] Example: AT \T5 Default: 0 Range: 0-255 Unit: 1 second 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] Example: AT %L3 %B14 \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 Maximum MNP block size is 64 characters. \A1 Maximum MNP block size is 128 characters. \A2 Maximum MNP block size is 192 characters. \A3 Maximum MNP block size is 256 characters. MODEM STATUS Type: Immediate Format: AT [cmds] \S [cmds] Example: AT \S &W Description: Display modem status. ON-LINE IN RELIABLE MODE Type: Immediate Format: AT [cmds] \On Example: AT \O Description: Returns to on-line and requests reliable mode connection. REDIAL Type: Immediate Format: AT [cmds] DL Example: AT M1 DL Description: Redials the last number dialed. REPORT PRODUCT VERSION Type: Immediate Format: AT [cmds] %V [cmds] Example: AT I3 &V1 %V Description: Reports product version. RETURN TO RELIABLE MODE Type: Immediate Format: AT [cmds] \Z [cmds] Example: AT \Z Description: Ends reliable mode link, initiate return to normal mode. STORE PHONE NUMBER IN NVRAM Type: Configuration Format: AT [cmds] \Pn=<#> Example: AT \P2=9W1-303-555-1212 \F? Description: Stores a phone number in the modem’s memory. 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.