ISP automatic forums » PHONE POWER → Call quality deteriorating?

Over the last few months I have gotten an increasing number of complaints from people I talk to that I am difficult / impossible to understand.

Have been using VZN FiOS for entire time, no change in service level and running with a Grandstream. The past 2+ years have been with TomatoUSB and QoS, so this should exclude the gateway as problem.

I've had PP for ~3 years now, and wanted to see if others are getting similar complaints?

I also have had deteriorating call quality for a while now. Often times land line calls sound more like cell phone calls. Sometimes people tell me they can't even get through. That and my call logs are often off by hours if not days.

Mine is a business line.