Need to change the outgoing name and address on a Canon fax G3 L2

To change outgoing name and address, use the following procedure:

1 Press Function.
2 Press Data Registration.
3 Press OK twice
4 Use UP Down arrows to select Unit Telephone #
5 Press OK
6 Use the numeric buttons to enter your fax/telephone number (max. 20 digits,including spaces).
• To enter a space, press Function
then Space. Spaces are optional
but make the number easier to
read.
• To enter a plus sign (+) before the
number, press #.
• If you make a mistake, press C and
re-enter the number.
7Press OK twice.
8 Use the numeric buttons to enter your name or company name (max. 24 characters, including spaces).
9 Press OK.
10 Press Stop to return to standby mode.

Below is a link to your L=220 User Guide:

Canon L220 User Guide

I hope you find this answered your question. Best of luck to you!
Greg