Aastra 9617 Online User's Manual page 11

An illustration of a two telephone-cord
setup
In a two telephone-cord setup, each of your two
telephone lines (each with a separate telephone number)
is on a separate telephone cord. If you have this setup,
you need to use two jacks. Plug one telephone cord into
the 1 jack, and plug the other telephone cord into the
2 jack. Plug the other ends of the telephone cords into
your wall jacks.
The USB cord.
Return to Connect the telephone cords.
Each telephone line is on a separate
telephone cord. For two lines, you
have two telephone cords.
The power
adaptor.
on page 8.
11