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Yale University telephone dialing instructions

Planned state-wide changes to the Connecticut area code assignments, along with changes to the telephone number infrastructure at Yale-New Haven Hospital and the Smilow Cancer Center, require two important changes to the dialing process when making calls from Yale University telephone system phones:

November 3: Y-NHH and Smilow Cancer Center changes

Starting November 3, 2009, calls from Yale phones to existing Y-NHH numbers (688-xxxx) and the Smilow Cancer Center (200-xxxx) will require dialing 8 plus the seven digit phone number.

There are no changes to the dialing process for calling internal Yale numbers (432-, 436-, 737-, 785-, 764-) or making long distance calls from Yale telephone system phones.

November 14: New area code brings dialing changes

(you may begin to use the area code now)

Starting November 14, 2009, all local calls will require dialing an area code. Note that this also affects cell phones (Yale provided or not). Callers will continue to dial 1 for long distance calls only. The switch is being implemented to accommodate new area codes planned for Connecticut.

Yale phone dialing instructions

Towns/cities considered local calls from New Haven: