ZyXEL Elite 2864I User Guide - Page 173

Use the serial port to enter the command: AT+FCLASS=Z The modem will enter into direct fax reception and print mode. Youalso need to set the S0 register to a finite number to enable auto-answering. To further detail operation in Class Z mode, the special command AT+FZF has been implemented to define the fax reception mode under Class Z operation. • +FZF=n ZyXEL fax reception mode selection for parallel port printing, auto-data and DRAM storage. n=0 Fax to printer, hangs up if data. Upon incoming calls, the modem will check whether an active printer is connected. If so, the modem will answer the call and print the fax, otherwise it will not answer. If the modem answers and the call is not a fax call, it will hang up. Note that the modem is in the printer (PRP) mode only during fax printing, at all other times it will maintain the serial port connection if it is connected. (Default) n=1 Fax to printer, data to serial port. When a call comes in, the modem will check if there is an active printer connected to the parallel port or an active DTE connected to the serial port. If either one is connected, the modem will answer; otherwise it will not answer. If the modem answers and the call is a fax call, it will check whether an active printer is connected or not. If it is, the modem will print the fax; otherwise it will hang up. If the call is a data call, the modem will check if an active DTE is con- nected to the serial port or not. If it is, the modem will connect to the DTE through the serial port; otherwise it will hang up. The +FZF command is only effective in Class Z operation. It only defines the reception mode under Class Z. For transmission, the DTE can send the appropriate +FCLASS command first before starting a transmission. If it is desired to return to fax reception and print mode later, the DTE needs to issue a +FCLASS=Z and a +FZF command again after finishing the transmission. To leave the fax reception and print mode, enter a +FCLASS command to set the modem to another Class mode. You can also enter commands through the parallel port and have the modem operate in +FZF=0 mode. But then you will often need to switch the modem parallel port connection between a PC and a printer . 15-19