Sena Expand Boom User Manual page 19

3. The second intercom friend (C) may join the intercom by making
an intercom call to you (A).
First Friend
(B)
4. Now you (A) and two Sena Expand Boom intercom friends (B & C)
are having a three-way conference intercom.
First Friend
(B)
(A)
Second Friend
(C)
(A)
Second Friend
(C)
6.3.2 End Three-way Intercom
When you are a member of an active three-way conference intercom,
you can completely terminate the conference intercom or just
disconnect an intercom connection with one of your active intercom
friends.
1. Press and hold the Center Button for 1 second until you hear a
beep to terminate three-way conference intercom completely. It
terminates both intercom connections with (B) and (C).
2. Tap or tap twice the Center Button to disconnect intercom
connection with one of the two intercom friends accordingly. For
example, by single tapping the Center Button, you can terminate
the intercom connection with the first intercom friend (B). However,
you still have the intercom connection with your second intercom
friend (C). To disconnect from intercom friend (C), tap twice the
Center Button. Now both intercom friends are disconnected.
Center Button
Press and hold for 1"
Tap once
Tap twice
End Three-way Intercom
Expand Boom
Result
Disconnect (B) & (C)
Disconnect (B)
Disconnect (C)
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