User`s guide

CONSIDERATIONS
Calls can’t be forwarded to phones that have Do Not Disturb activated.
Voice announcements can’t be forwarded.
Forwarded calls can be answered using Call Pickup or Auto Answer-All.
A call can be forwarded only once.
For example, if phone A’s calls are
forwarded to phone B and phone B’s calls are forwarded to phone C, a
call that comes into A is forwarded only to B, not to C.
Call Forwarding and Follow Me can’t be in effect at the same time on a
phone. Activating one feature removes the other automatically.
An originating phone can have only one destination phone. However, a
phone can serve as the destination for more than one originator.
3-28 MERLIN II System Features