User`s guide

FIGURE 3-6 Button location codes for digital (7406D) phones.
Conference
DESCRIPTION
When you want other people to join a call in progress, you can use the
Conference feature to set up intercom conference calls among people
connected to the MERLIN II system, outside conference calls involving only
yourself and people outside the system, or a combination of the two. Unlike
bridging, a conference call can include up to two people from outside the
MERLIN II system as well as up to two people who are connected to the
MERLIN II system, and yourself, a total of five people.
CONSIDERATIONS
People connected to the MERLIN II system can bridge onto an outside line
that is active in the conference call, unless one of the participants has
activated Privacy.
You cannot bridge onto a call that already includes three people connected
to the MERLIN II system.
If all participants within the MERLIN II system place the call on hold,
people on outside lines participating in the conference call can still confer.
If everyone in a conference call composed only of people connected to the
MERLIN II system places the call on hold, the call terminates
automatically.
If you drop a line that has other people bridged onto it, those people are
also disconnected from the conference.
MERLIN II System Features
3-41