I much prefer the rugged simplicity of a twelve-button Touch-tone telephone without speed-dials, redial, or any of those other "extras". The VoIP endpoints (ATAs) I use have enough functions built in, which is where I think they belong. I'd be equally happy with an analog PBX that handled those functions.
"I appreciate SDF but it's a general-purpose server and the name doesn't make it obvious that it's about art." - Eugen Rochko