Aastra recently announced Aastra Hi-Q Audio Technology.  From Aastra’s website:
Aastra Hi-Q™ enhances the clarity of voice calls making it easier to understand all that is said. Providing a truly superior voice experience and greater productivity, the benefits of this enriched sound can be clearly heard on both handset and speakerphone.
Aastra’s Hi-Q audio technology is a [...]