My old iMac DV died, and I replaced it with a 20-inch Intel iMac. Wonderful machine, but it doesn't have a modem. I need to send faxes, so I dusted off my Zoom K56 Flex fax modem. This device has a 25-pin RS-232 serial connector, so I bought a USB-to-Serial converter ($7.50 on eBay). Unfortunately, the iMac doesn't recognize the fax modem. Any help in configuring would be appreciated.
Here are technical details for those that are interested.
System Profiler reports a Vendor-Specific USB device with the following properties:
Bus Power (mA): 500
Speed: Up to 12 Mb/sec
Product ID: 0x5523
Vendor ID: 0x4348
System Preferences : Print & Fax : Set Up Fax Modem
brings up the Fax List window but there are no fax devices listed.
Print: Fax PDF
brings up a dialog box stating "No Fax Selected", and there are no faxes to select from.
The modem has many lights on the front. The green MR (modem ready?) light is on, as are the red TR (terminal ready?) and CS (?) lights. If I remember correctly, this indicates that the modem is connected to the computer and ready for operation. During operation, the OH (off hook), CD (carrier detect), and FAX (fax mode) lights will come on, and the RD (read data) and TD (transmit data) lights will flicker. We are not getting this far, as no data is being sent to the (as yet unrecognized) modem.
The modem worked great for many years with my Centris; I retired it when I got the iMac with a built-in modem. All I need is the fax capability, as my Internet connection is by cable. I was hoping to save the $50 cost of the Apple USB modem (which also has many negative reviews on the Apple site).
I'm speculating that at the Unix level there is a configuration file for USB devices (let's call it .usbcfg) that associates the product ID with the type of device and its driver. If this is true, I could edit the .usbcfg file to tell OS X that 0x5523 is a fax modem and to use the appropriate Zoom modem script in the Library. Can anyone help in this area? Is there such a configuration file? If so, what is it's name and where is it located?