ATT POTenc
been running a test ping -t
www.iburst.co.za -l 1 , ie pinging iburst with 1 byte, looking at the UTD as you suggested, 1 or 2 seconds before one of the disgusting(over 99ms) results theres a flickering of the green light, second from the bottom heres a result
Reply from 196.30.31.120: bytes=1 time=156ms TTL=126
Reply from 196.30.31.120: bytes=1 time=78ms TTL=126
Reply from 196.30.31.120: bytes=1 time=78ms TTL=126
Reply from 196.30.31.120: bytes=1 time=78ms TTL=126
Reply from 196.30.31.120: bytes=1 time=78ms TTL=126
Reply from 196.30.31.120: bytes=1 time=124ms TTL=126
Reply from 196.30.31.120: bytes=1 time=374ms TTL=126
Reply from 196.30.31.120: bytes=1 time=78ms TTL=126
Reply from 196.30.31.120: bytes=1 time=328ms TTL=126
Reply from 196.30.31.120: bytes=1 time=78ms TTL=126
Reply from 196.30.31.120: bytes=1 time=156ms TTL=126
Reply from 196.30.31.120: bytes=1 time=109ms TTL=126
Reply from 196.30.31.120: bytes=1 time=62ms TTL=126
Reply from 196.30.31.120: bytes=1 time=109ms TTL=126
Reply from 196.30.31.120: bytes=1 time=78ms TTL=126
Reply from 196.30.31.120: bytes=1 time=218ms TTL=126
Reply from 196.30.31.120: bytes=1 time=93ms TTL=126
Reply from 196.30.31.120: bytes=1 time=124ms TTL=126
Reply from 196.30.31.120: bytes=1 time=499ms TTL=126
Reply from 196.30.31.120: bytes=1 time=234ms TTL=126
Reply from 196.30.31.120: bytes=1 time=171ms TTL=126
Reply from 196.30.31.120: bytes=1 time=77ms TTL=126
Reply from 196.30.31.120: bytes=1 time=124ms TTL=126
Reply from 196.30.31.120: bytes=1 time=78ms TTL=126
Reply from 196.30.31.120: bytes=1 time=93ms TTL=126
Reply from 196.30.31.120: bytes=1 time=281ms TTL=126
Reply from 196.30.31.120: bytes=1 time=312ms TTL=126
Reply from 196.30.31.120: bytes=1 time=156ms TTL=126
Reply from 196.30.31.120: bytes=1 time=78ms TTL=126
Reply from 196.30.31.120: bytes=1 time=390ms TTL=126
Reply from 196.30.31.120: bytes=1 time=78ms TTL=126
Reply from 196.30.31.120: bytes=1 time=155ms TTL=126
Reply from 196.30.31.120: bytes=1 time=78ms TTL=126
Reply from 196.30.31.120: bytes=1 time=78ms TTL=126
Reply from 196.30.31.120: bytes=1 time=109ms TTL=126
Reply from 196.30.31.120: bytes=1 time=124ms TTL=126
Reply from 196.30.31.120: bytes=1 time=62ms TTL=126
Reply from 196.30.31.120: bytes=1 time=62ms TTL=126
Reply from 196.30.31.120: bytes=1 time=140ms TTL=126
Reply from 196.30.31.120: bytes=1 time=78ms TTL=126
Reply from 196.30.31.120: bytes=1 time=156ms TTL=126
Reply from 196.30.31.120: bytes=1 time=78ms TTL=126
Reply from 196.30.31.120: bytes=1 time=78ms TTL=126
Reply from 196.30.31.120: bytes=1 time=93ms TTL=126
Reply from 196.30.31.120: bytes=1 time=78ms TTL=126
Reply from 196.30.31.120: bytes=1 time=155ms TTL=126
Reply from 196.30.31.120: bytes=1 time=374ms TTL=126
There must be something making it go up and down like that, these pings are all over the place.
BTW, no one called me back from Iburst today