Use call forwarding to forward your calls to youw own number. :
72# 1 (area code) number

Do this twice! After the second time you should here a busy signal after
dialing 72# 1 (area code) number.

Use communication and dialing formats as usual.

When you are done using, unforward the call by dialing 73#. I would also
do this twice just to be sure because no one will be able to reach you
because your phone will be in a loop.