xnormjeanx
So each call is 2.5 minutes long. I barely talked so that's the minimum. About 460 people are admitted. That's 1150 minutes of calls, or 19 hours. Without breaks, and starting at 3am Pacific, that means they go on until 22h00 or 10pm Pacific. Calls must be going out still!
Trouble is that you are including total class size not just R1 size. I will give us the benefit of the doubt and say 40% come from R1 so thats about 185 ppl. However, I put the time at 5 min assuming dial and redial time, and the occasional break.
That comes to 920 mins, or about 15 hours.