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Direct-Dial Tie Lines
You can use these MIT direct-dial numbers to call the institutions listed below.
| To call... | If extension is known, press... | If extension is unknown*, press... | Main phone number |
|---|---|---|---|
| Bates Research and Engineering Center | five digits | 3-9200 | 617-253-9200 |
| Endicott House | five digits | 3-5211 | 617-253-5211 |
| Haystack Observatory | five digits | 5-5400 | 617-715-5400 |
| Lincoln Laboratory | 181 + four digits | 181 + 0000 | 781-981-5500 |
| Woods Hole Oceanographic Institution | 188 + four digits | 188 + 2000 | 508-548-1400 |
*Ask the operator for the extension number, then hang up and enter the tie-line number plus the extension
