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DPT Overview
1.1.4 Feature Buttons
Digital proprietary telephones (DPTs) have the following types of Feature Buttons:
• Fixed Buttons
• Flexible Buttons
Fixed Buttons
Fixed buttons have specific functions permanently assigned to them. These default function
assignments cannot be changed. The following table lists the fixed buttons located on each
DPT model.
Feature Button
AUTO ANSWER/MUTE
AUTO DIAL/STORE
CONF
FLASH
Function buttons
FWD/DND
HOLD
INTERCOM
Jog Dial
MESSAGE
MODE
MONITOR
PAUSE
PROGRAM
REDIAL
SELECT
SHIFT
Soft buttons
SP-PHONE
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T7420 T7425 T7431 T7433 T7436 T7220 T7230 T7235 T7250
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