Hi,
The queue button will display status as reported by queue events in AMI (that are not related to the sip registration status at all). So the answer is no, it is not possible, unless asterisk changes its behavior.
Hi,
sip phone registration is not reflected in the queue member status information in asterisk. Fop2 will read status from the queue events only, and will display all members as returned by asterisk. try in the asterisk cli:
asterisk -rx "queue show"
What you see there is what you will see on screen.