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DIAL 9 TO DIAL AN OUTSIDE LINE(to call someone outside the District from an office or classroom phone) you MUST DIAL 9 BEFORE dialing the phone number. Do not dial the # sign when dialing outside the District.
DIAL #9 TO DIAL A CLASSROOM use the # sign first before dialing the 4-digit extension.
TO DIAL A 4-DIGIT EXTENSION THAT IS NOT A CLASSROOM, dial the extension without any preceeding numbers or characters