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122 Chapter 18 Configuring telephones: Digital telephones
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• Each line assigned to a telephone must appear to a button with an indicator. The maximum
number of available buttons is 8 for the 7208 digital telephones, 10 for the model 7310, 10 for
7316 digital telephones, 16 for the 7316E digital telephone, and 24 for the model 7324 digital
telephones.
• In addition to lines, buttons have other uses, for example, intercom or handsfree operation.
Line programming does not overwrite assigned Intercom, Answer DN, Handsfree, or Hunt
group buttons. Refer to Figure 41. However, intercom buttons overwrite anything. (Figure 42).
• Answer DNs also overwrite line programming, but not Intercom buttons. Answer DN buttons
appear above Intercom buttons; if an Intercom button is added after Answer DN buttons are
assigned, the Intercom button pushes the Answer DNs up. The top Answer DN overwrites
whatever is above it. (Figure 43)
Figure 41 7316E digital telephone display button assignment protocol
Figure 42 Adding an intercom button
Note: You need at least two intercom buttons to use the conference
feature.
Line
Line
Lines and hunt
group appearances
assign to first
available button
from top, left
#
Intercom
Intercom
Answer DNs assign starting above the assigned
intercom buttons (maximum of 8). Answer DNs
overwrite line programming.
* Other types of telephones may have a Handsfree key assigned
to the lowest key. In that case, intercom buttons start above that
key.
Intercom buttons assign starting from the bottom,
right* (maximum of 8). Intercom buttons overwrite
line programming, and push up Answer DNs.
Answer DN
Answer DN
HG XX
Line
Line
#
Different models of
telephones may start at
other buttons
Line
Line
Intercom
Intercom
If you add an intercom button, the
Answer DNs move up.
In this case, giving you one less line
button.
Answer DN
Answer DN
HG XX
Line
Line
Line
Line
Intercom
Intercom
Answer DN
Answer DN
HG XX
Line
Line
Line
Line
Line
Line
Line
Line
Line
Line
Line
Line
Line
Line
Line
Intercom