Avaya 10bs User Guide

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Your MLX-10 Telephone
Line Buttons
There are ten line buttons—two columns of five each—in the
center of the phone. Use these buttons to make and receive
inside calls (to and from other extensions) and outside calls.
Two or more line buttons are labeled either ICOM (Intercom)
or SA (System Access). You have either  ICOM  or SA
buttons, but never both.
If you have ICOM buttons, use them to place inside calls only:
Use buttons labeled with phone numbers to place outside
calls.
If you have SA buttons, use them for both inside and outside
calls. You must enter a dial-out code (usually a 9) to make an
outside call on a SA button.
You can program a feature onto any unlabeled line button.
See Chapter 3 for more on programming unlabeled line
buttons.
Depending on your company, you mayor may not have all the
buttons described next. If your phone has  SA buttons, see
the following section. If your phone has  ICOM  buttons, see
Line Buttons 
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