Phone Model: Blackberry 8220 Pearl Flip
Operating System: 4.6.0.471/4.6.0.278

I have noticed that we are experiencing a problem with regards to degraded voice quality when running on UMA. This is corrected when switching the network mode to Mobile Network Only (EDGE Service).

Any issues or solutions to correct?

Thanks,
--Phil

Are you using the Rogers,voice optimized, Linksys Router? After going to this router, I've found the voice quality through UMA to be on par with the Mobile Network.