Fax Class 1 operation requires the use of a fax-enabled application, that supports the +FCLASS=1 command. The following table is an overview of Fax Class 1 commands.
| Command | Function |
|---|---|
| +FTS=n | Stop Transmission and Wait |
| +FRS=n | Receive Silence |
| +FTH=n | Transmit Data with HDLC Framing |
| +FRH=n | Receive Data with HDLC Framing |
| +FTM=n | Transmit raw fax data |
| +FRM=n | Receive raw fax data |
| +FPR=n | Set DTE-DCE Fax port rate |
| +FLO=n | Set DTE-DCE Fax flow control |
| +FMM? | Report model identification |
| +FMR? | Version/Revision Information |
| +FMI? | Manufacturer Identification |
| +FAE=n | FAX/data auto-detection |
| +FPR=n | Set fixed port rate |
| +FLO=n | Select flow control |
| +FMDL? | Report model identification |
| +FMFR? | Report manufacturer identification |
| +FREV? | Report revision information |
| +FAA=n | FAX/data auto-detection |
| +F34 | FAX V.34 half-duplex |