GE 9579 - Manual (Page 36)

6
Chain Dialing from Memory
Use this feature to make calls which require a sequence
of numbers, for instance if you use a calling card for a
frequently called long distance number. By dialing each part
of the sequence from memory. The following example shows
how you can use chain dialing to make a call through a long
distance service:
The Number For Memory Location
Long Distance Access Number 1
Authorization Code 
Frequently called long distance number 
1. Press speaker (or pick up the handset).
. Press the DIAL button and then press 1.
. When you hear the access tone, press the DIAL button
and then press .
. At the next access tone, press the DIAL button and then .