Is anyone out there using the Avaya Transtalk 9000 Digital Wireless System?

We have an Avaya Definity G3si. We have two building with many barrier walls that make any general cordless 2.4 and 5.8 phone fairly useless in most areas. I'm looking at this option...

How are the 9040 handsets?
Do you get the expected range?

And pros and cons to share?

Thank you! Rhonda

To Succeed in life, you need three things: a wishbone, a backbone and a funnybone. ..Reba McEntire