LG-Ericsson LDP-7008 D User Manual page 606

LIP-8050V User Guide
Press the CALL button, to call the Main number (in yellow) or
MENU to select a different number available for the contact
(Mobile/Home/Office/Station).
To add or edit a contact record in the Phonebook, select Add
from the Phonebook menu or Edit from the Search menu.
You can enter various telephone numbers, identify the Main
number and select the CO line for calling the contact. use LIST
for available CO codes.
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