Suitable phone for Nortel Ingenious VOIP system

Hi,

My company has recently switched to using Nortel's Ingenious VOIP system.

Basically I have a headset and dial each phone number via my computer keyboard.

However, I would very much prefer to use some form of USB phone, but am unable to find a fully compatible one.

My Skype USB phone works fine for the calls, except that Ingenious doesn't recognise any of the phone's buttons, so I still have to dial via my computer keyboard rather than via the phone's own keypad.

Basically, is there an Ingenious compatible phone that I can use.

Many thanks,

Pete