You can find symbols for telephone, fax, and email in the "Symbol" menu in Microsoft Excel. Here's how to insert them:

1. Click on the cell where you want to insert the symbol.
2. Go to the Insert tab in the ribbon at the top of the Excel window.
3. Click on the Symbol button in the Symbols group.
4. In the Symbol dialog box, select Arial or Calibri as the font.
5. Scroll down the list of symbols until you find the one you want to insert (telephone, fax, or email).
6. Click on the symbol to select it.
7. Click on the Insert button to insert the symbol into the cell.
8. Close the Symbol dialog box.

Alternatively, you can use keyboard shortcuts to insert these symbols:

- Telephone symbol: press "Alt" + "9742"
- Fax symbol: press "Alt" + "9993"
- Email symbol: press "Alt" + "9993"