AT&T 8110 - Manual (Page 10)

Before you begin to use the procedures described in this book check
which type of telephone you are using by looking at the designation
number at the top right corner on the front of your telephone. Then, see
Figure 1, the 8102 telephone, or Figure 2, the 8110 telephone,
according to which telephone you are using, and read the explanations
of their features.
Data jack
Adjunct
(equipment) jack
Handset
Program button
Flash button
Pause button
Programmable
Dialing buttons
Redial button
Hold light
Hold button
Message light
Handset jack
Dial pad
TOP VIEW
Line jack
Adjunct
power jack
Tone selector
(Slow/Fast)
Ringer
volume
control Tone
selector
(Lo/Hi)
SIDE VIEW BOTTOM VIEW
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FIGURE 1 8102 Telephone, Top, Side, and Bottom Views
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