I recently had a client that worked with his IT company out of Santa Barbara to get a Yealink/Ooma system going. Apparently Ooma has teamed up with Yealink to provide an office solution.

Everything was preconfigured by this other company, but we installed it. It couldn't have been easier and the equipment seems quite nice. There were a couple wired desk phones (PoE) and some DECT handhelds, that ran off a PoE gateway. Ring groups, extensions, overall flexibility is infinite. There was a second building that needed to be tied in, no problem with another gateway and another DECT handheld.

They used this system to unify 3 offices in 3 cities and a couple of the executives homes. I don't know the specifics but I do know this setup saves many hundreds $$ each month for them and has a lot more flexibility than the old stuff.