For 3 digit rooms in the Main Building, please dial 60 and then the room number.
要打到主要大楼三位数的房间，请先拨60再拨房间号码。
2
Overlap dial provides for a longer time-out period between digits, also called the inter-digit timer.
重叠拨号提供了一个较长的时间数字之间的时期，也称为间位定时器。
3
It is free to call inside the campus (the last 4 digit number). If you want to dial outside the campus (including mobiles), please dial 0 first then the other digits.