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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:
Yale phone dialing instructions
| To call | Dial |
|---|---|
| Internal Yale campus number | Last 5 digits |
| Local number | 9 + 203 + 7 digits |
| Yale-New Haven Hospital | 8 + 7 digit YNHH extension |
| Smilow Cancer Center | 8 + 7 digit Smilow extension |
| Connecticut Mental Health Center (CMHC) | 9 + 203-974-7300 |
| Long distance, in or out of state | 9 + 1 + area code + 7 digits + TAN |
| Long distance, in or out of state
(personal credit card, bill to third number or collect) |
9 + 0 + area code + 7 digits |
| International | 9 + 011 + country code + city code + number +TAN |
| International (personal credit card, bill to third number or collect) |
9 + 01 + country code + city code + number |
Towns/cities considered local calls from New Haven:
Ansonia |
Milford |