I don’t work at a call center but I do talk on the phone probably an average of 2 hours per day. Everyone I talk to used to complain about my phone’s audio quality before I got these. I even have a pair of Sennheiser BTNC’s. These sound better, but then again they are wired with a dedicated mic. Glad I got these and if you are looking for good audio quality in phone calls you’ll probably be happy with these too.