DESC: The Model ZFM5621CF modem’s V.92 technology allows your data to upload at speeds of up to 48kbps toward a digitally connected modem at a central site. This high-performance modem features voice/fax/data auto detection and tone/pulse dialing support and also includes an answering machine function and auto speed selection. For a connection you can depend on, choose the Zonet Conexant/Rockwell 56k V.92 PCI modem.