I purchased an SPA9000, SPA400, and several SPA9xx & WIP310 phones a couple of years ago. As I continue to have problems with the SPA9000 & SPA400, I'm thinking about moving to the UC320 as a replacement.
Here's the question: do I have to junk the phones, too? They are working fine (well, at least the SPA9xx units are - I've never been happy with the WIP310s). I'm hoping they are compatible with the UC320 so that I can just replace the SPA9000 & SPA400 and continue to use my existing phones.
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