This has got to be the biggest joke of an application I’ve ever seen.
1. The server it goes on can’t have anything other than a physical C: drive.
2. If you install MS SQL in anything other than the default location, their app won’t install.
3. Their app process seems to go down without notice, frequently.
4. Their database replication seems to break frequently, along with their Tomcat install.
I don’t know how they got Cisco certified, but I find it irritating to say the least.
Their product does have good features, assuming you can keep it operational.
8/10/2005 Update –
One more bad thing – their product only waits by default 100ms for a response from the phone. Hardly ideal in a WAN environment. They patched it to wait 500ms and that seems to work better 
Oh they’re not certified. They haven’t been since the first version of the software came out. Of course, that’s not something that they’re really out there advertising.