About Your Calling Group Supervisor
Telephones
Line Buttons
The 20 or more buttons in the center of your telephone are
line buttons which connect to system lines. You may have a
different label on one or more of these buttons; consult your
system manager for an explanation of their purpose and use.
The number of line buttons depends on the type of telephone
as follows:
■ 20 on the
■ 22 on the
■ 28 on the
■ 34 on the
MLX-20L telephone
BIS-22 and BIS-22D telephones
MLX-28D telephone
BIS-34 and BIS-34D telephones
Two or more of these buttons are labeled either
ICOM
(Intercom) or
SA
(System Access). You have either
ICOM
or
SA
buttons, but not both.
On telephones with
ICOM
buttons, you use
ICOM
buttons for
inside calls and buttons labeled with telephone numbers for
outside calls. On telephones with SA buttons, you can make
both inside and outside calls on SA buttons. You must enter
a dial-out code (usually
9
) before you make an outside call
using an
SA
button. You can also use line buttons for outside
calls.
You can program any unlabeled line buttons on your
telephone with calling group features or with user features.
See your telephone user’s guide for more information on
programming standard features on your telephone.
2-12
Buttons
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