I run Asterisk 1.4, but calls on the line are generally short. For now, it's mainly my 'hobby' line, because I got in on the Beta and have good pricing on the line. However, as my girls get older, the line will definitely start getting heavy use.

In the meantime, I'll have to think of a good test number to call that would keep the call open without me having to do anything. Any ideas?

Edit: (It may be obvious, but I don't want to burn cell minutes or tie up my regular house line, and I'd like the call to be off-voipo network...)