Configure an internal modem in an iMac?
I have an iMac which supposedly has an internal modem for faxing (yes! faxing!) but it won't let me fax because it says it's "not configured" in the System Preferences. I looked up Mac Help and it doesn't address the problem. Does anybody know how to configure an internal modem on an iMac? I'm running Yosemite.
iMac G5 (20-inch), Mac OS X (10.7.5), Yosemite