Optional Commands (FAX Class 2.0)


The following parameter commands are either optional or some of their values are optional. The following list shows the values that are supported. Entries with more than one 0 value mean that the parameter is multi-valued and all the supported values are 0. 
Command      Implemented       Parameter Meaning                                                                   

                                                                                                                   

                                                                                                                   

+FAA         0,1               adaptive answer                                                                     

                                                                                                                   

                                                                                                                   

+FBO         0,1               data bit order                                                                      

                                                                                                                   

                                                                                                                   

+FBS         none              buffer size                                                                         

                                                                                                                   

                                                                                                                   

+FBU         0                 HDLC frame reporting                                                                

                                                                                                                   

                                                                                                                   

+FCQ         mandatory values  copy quality checking                                                               

                                                                                                                   

                                                                                                                   

+FCR         0,1               capability to receive                                                               

                                                                                                                   

                                                                                                                   

+FCT         1E (hex)          DTE phase C response time out                                                       

                                                                                                                   

                                                                                                                   

+FEA         0                 phase C received EOL alignment                                                      

                                                                                                                   

                                                                                                                   

+FFC         0,0,0,0           format conversion                                                                   

                                                                                                                   

                                                                                                                   

+FHS         table 13          call termination status                                                             

                                                                                                                   

                                                                                                                   

+FIE         0                 procedure interrupt enable                                                          

                                                                                                                   

                                                                                                                   

+FLO         0,1,2             flow control select                                                                 

                                                                                                                   

                                                                                                                   

+FMS         0,1,2,3,4,5       minimum phase C speed                                                               

                                                                                                                   

                                                                                                                   

+FNS         none              non-standard frame FIF                                                              

                                                                                                                   

                                                                                                                   

+FPR         0-8               serial port rate control                                                            

                                                                                                                   

                                                                                                                   

+FRQ         0,0               receive quality thresholds                                                          

                                                                                                                   

                                                                                                                   

+FRY         0                 ECM retry count                                                                     

                                                                                                                   

                                                                                                                   

+FSP         0,1               request to poll
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