Quote from Bacan on December 19, 2011, 20:29
If your looking for just a Call Dialer. Then go looking for a USB to RS-232 serial adapter, and a certified serial Modem for your local phone service.
There are a lot of USB modems supported by Linux. The key will be to find ones supported by the standard kernel.org kernel rather than ones which come with binary (x86) drivers.
Using a USB modem for the phone system interface you could hook a keypad to the GPIO along with an LCD and/or a few LEDs and you'd have an infinitely flexible dialer.