Until answered using a line appearance button, incoming calls alerting on a line appearance, follow the settings of the incoming call route's destination group or user. They do not follow the settings of any line appearance user.
If an incoming calls destination is voicemail, or once the incoming call has passed from its destination to voicemail, it cannot be answered or bridged into using a line appearance button.
If the line appearance user is also the incoming call route destination for the call, the call will alert on their line appearance only. In this case:
It will alert on the line appearance even if all call appearances are in use.
The call will not follow any of the user's forwarding settings .
The call will receive call coverage from other user's with call coverage buttons set to the line appearance user.
The ring delay used is that of the first free call appearance.
For analog lines set to ICLID, any line appearances show active while the system waits for ICLID information. During this time the line has not been routed and cannot be answered using a line appearance button.
Calls alerting on a line appearance can also alert on a call coverage appearance on the same phone. If Ringing Line Preference is set, the current selected button will change from the line appearance to the call coverage appearance.
If the line appearance user has do not disturb (DND) enabled, the line appearance button icon or lamps will still operate but alerting and ringing line preference selection are not applied unless the caller is in their DND exception list.