Legend R7.0 when a call get transfer to an ext if the person is on the phone it goes right into voicemail how can I have it ring three times before it hits voicemail

Merlin Legend R.70
007 MLM voice mail
PBX mode
lines in pool 70

Hey Bob, about time you showed up to the forum. Welcome! I tossed you an email. need to change their class of service.

Make sure the have at least two sys-a buttons and one of the two is not a sys-o.