There’s absolutely nothing to complain about Google Pixel 2’s call quality. More often than not, I enjoyed superior connectivity experience and network coverage. So, there were hardly any call drops or interruptions. Earpiece loudness was pretty commendable and so was the clarity.
Since the handset carries front-facing stereo speakers, the speaker output was conveniently loud. However, I did notice that while on loud speakers, voice used to get a bit muffled on audio calls. However, earphones and earpiece experiences were comparatively better all the time, no matter what.