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Important notice

Writing Tips has been archived and won’t be updated before it is permanently deleted.

For the most up-to-date content, please consult Writing Tips Plus, which combines content from Writing Tips and The Canadian Style. And don’t forget to update your bookmarks!

To begin your search, go to the alphabetical index below and click on the first letter of the word you are searching for.

telephone extensions

Put a comma between the main telephone number and the extension, and put the abbreviation Ext. before the extension number.

  • Please contact Lisa Steward at 613-555-0415, Ext. 126.

In formal correspondence, you may write Extension out in full.