Hi, this is Andrew, one of the co-founders of PagerDuty.
That's an interesting idea. We've actually thought a bit about adding phone-based triggering to PagerDuty (via a 1-800 number + access code). The idea was to make PagerDuty useful to non-IT businesses like plumbers that also have the concept of out-of-hours on-call duty. From your comment, though, it sounds like this kind of feature would be pretty useful even in the IT world.
That's an interesting idea. We've actually thought a bit about adding phone-based triggering to PagerDuty (via a 1-800 number + access code). The idea was to make PagerDuty useful to non-IT businesses like plumbers that also have the concept of out-of-hours on-call duty. From your comment, though, it sounds like this kind of feature would be pretty useful even in the IT world.