Running PBX is too much for me as I am not planning to do anything complicated. Maybe a software PBX - 3CX is an option.
做了一个简单的计算:netbook 大概24watt,PG&E的average rate is about $0.185/kwh,then
24/1000 * 24 * 30 * 0.185 = $3.2 per month
实际上,我的netbook不必一直开着,只是在出门的时候开一下。
不知道这个选择如何?