A common wisdom here is that one should use a proper hardware phone rather that an extra software on the user’s PC. Why is that such a big issue?
One thing that bothers me with the current crop of hardware SIP phones is that they are hopelessly proprietary.
So what would it take to build a fully-adaptable phone?
I am 100% behind the assertion that most users want a hard phone on their desk. Soft phones, even good ones, seem to be exclusively the domain of those who travel and vertical niches like call centers.