GN Netcom's GN6210 http://www.gnnetcom.com/US/EN/MainMe...ns/GN+6210.htm works well but it's not on the list either. This is the same physical headset as the BT250 with some differenf firmware that allows it to also pair with its charging base for voice calls on your landline phone. I bit the bullet and purchased it about a month ago despite the lack of reviews and for the most part, it's doing very well for me. I'm on the phone all day, both my land line and my XV6600, and it's reasonably seamless to switch between them. I've had problems with the headset and the base losing pairing twice now ... haven't a clue as to why, but it hasn't gotten annoying enough to investigate further.

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Verizon XV6600
GN NetCom GN6210
Audiovox ROM Updated