For example: If you get called to x47000 and you're outside MSH, it translates to 212-241-7000. So drop the 4 and substitute with the above prefixes. You also cannot call or page to an extension starting with a 2 or a 3
Outside line: 9 + 1 + area code + number
Long distance: dial the number and enter your long distance code. You will receive this code at the beginning of the year from the Department of Medicine.