Back in 2013, I acquired an Avaya 4610 IP set. However, not to long after the acquisition, I’ve found out that this was a special version. A very strange one to say the least. I would’ve retuned this to the eBay seller as a “Not as Described” claim but I don’t like pulling that unless I really have to.
For a period of time from 2006 to 2008, Avaya marketed (albeit with limited fanfare) a peer to peer IP phone system called the One-X Quick Edition. To be honest, I never understood the brand.