Or "adequate" VoIP, e.g. Linux 4.3.0.37 on Ubuntu 14.04 Trusty on a very modest AT&T DSL line. When I account for differences in instruments, Sennheiser headse

Or "adequate" VoIP, e.g. Linux 4.3.0.37 on Ubuntu 14.04 Trusty on a very modest AT&T DSL line. When I account for differences in instruments, Sennheiser headset vs. an old wireless phone system with an indifferent speaker, easily equal, and indeed noticeably a lot better than most any cell call (although maybe my Nexus 5X Project Fi calls going over local WiFi to a POTS line are pretty good, I'll have to start paying attention). (And I'm glad I've moved out of Verizon to AT&T (!!!) territory, AT&T is seriously inconsistent about their DSL services, but here I got what seems to be a solid U-verse Internet installation in less than 24 hours after closing on the house I just moved to.)