A friend is trying to bring up a fax machine on the FXS port of a Cisco UC500. From the CLI we followed the method below using stcapp and making the fxs port an sccp phone. The fax machine would answer but faxing would fail. So he tried to use the GUI to configure the FXS ports. Rather than ephones and stcapp it just appeared to make use of dial peers. The fax machine appears to answer internal calls but not from outside. Can someone please point me to a foolproof config for taking a call from a SIP trunk and sending that on to an FXS port with a fax connected to it? Is stcapp or dial-peer the better way to go? Thanks.