How do you spell a word using a touch tone phone?

There are letter codes attached to the numbers 2 through 9, the same as originally used to designate named telephone exchanges in the early days of telephones.

2 - ABC

3 - DEF

4 - GHI

5 - JKL

6 - MNO

7 - PQRS

8 - TUV

9 - WXYZ

The letters have become used to identify otherwise innocuous numbers, e.g. a phone number such as 555-5879 might be used by a trial lawyer because the number can be easily remembered as 555-JURY.