NxStage tech support usually answers within a minute. There are occasions, however, when it takes 10 minutes or more go get one of their people on the line which can be a problem if your blood isn't moving. And, the number is easy to remember - 1 866 NXSTAGE.
Gosh, I have never waited long if I was on the machine. If I pushed the button for not in treatment, sometimes a wait. But never 10 minutes.
We have been doiung nocturnal with the fresenius machine for 9 years.
I agree that tech support is great.
I'm sure if I had to learn to use the big Fresenius machine I'd freak.