PhoneTray is described as 'Block an unlimited number of phone calls using USB voice/data/fax/caller-id dial-up modem' and is an app. There are 1 alternatives to PhoneTray for Windows. The best PhoneTray alternative is CallClerk.
Windows software that uses modem to record Caller-ID, Block phone numbers on a banned list, act as an answering machine and fax machine, and dail phone numbers.
