The problem is that Biphase isn't exactly RS422, its close, but not exactly there. I had a site where we needed to push Biphase across a wireless link. We used a code converter from Sennetech to convert the Biphase from the matrix to 232. You just need to do the same thing, but backwards.
Here is the company, and the single camera converters.
www sennetech net/SCT100.htm
Their support is great, and if you need something they don't have, they will make one for you. We have used them several times with great success.
Sorry about the spacing in the link, the system thinks I am a spammer.
