During appearance button usage, one of the user's appearance buttons may be indicated as the user's current selected button. This is the appearance button already in use, or if idle, the appearance button that will be used if the user goes off hook by lifting the handset.
On phones with a display area next to each button, the current selected button is indicated by either an _ underscore of the button label, or a shaded background. On phones with twin LED lamps, the current selected button is indicated by the red lamp being on.
The system sets which appearance button is the current selected button using the following methods:
Method
Description
Idle Line Preference
This feature can be set on or off for each individual user, the default is on. When on, it sets the current selected button as the first available idle call/line appearance button. See Idle Line Preference.
Ringing Line Preference
This feature can be set on or off for each individual user, the default is on. When on, it sets the current selected button as the button which has been alerting at the user's phone for the longest. Ringing Line Preference overrides Idle Line Preference. See Ringing Line Preference.
Delayed Ring Preference
This setting is used in conjunction with ringing line preference and appearance buttons set to delayed or no ring. It sets whether ringing line preference should observe or ignore the delayed ring applied to the user's appearance buttons when determining which button should have current selected button status.
User Selection
The phone user can override both Idle Line Preference and Ringing Line Preference by pressing the appearance button they want to use or answer. That button will then remain the current selected button whilst active.
If the user currently has a call connected, pressing another appearance button either holds or disconnect that call. The action is determined by the system's Auto Hold setting.
Answer Pre-Select
Normally when a user has multiple alerting calls, only the details of the call on current selected button are shown. Pressing any of the alerting buttons will answer the call on that button, going off-hook will answer the current selected button.
Enabling the user telephony setting Answer Pre-Select allows the user to press any alerting button to make it the current selected button and displaying its call details without answering that call. To answer a call when the user has Answer Pre-Select enabled, the user must press the alerting button to display the call details and then either press the button again or go off-hook.
