Sena SRL2 Mode D'emploi page 274

SRL2
13.2.2 End Three-way Intercom
When you are a member of an active three-way intercom, you can
completely terminate the intercom or just disconnect an intercom
connection with one of your active intercom friends.
1. Press the Center Button for 5 seconds until you hear double
beeps to terminate three-way intercom completely. It terminates
both intercom connections with (B) and (C).
2. Tap or double tap 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 just
terminate the intercom connection with the first intercom friend
(B). However, you still have the intercom connection with your
second intercom friend (C).
The Center Button Operation
Press for 5 seconds
Single tap
Double tap
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Result
Disconnect (B) & (C)
Disconnect (B)
Disconnect (C)
13.2.3 Start Multi-way Intercom
You can have multi-way intercom with up to seven other SRL2 users by
creating an intercom chain. Both the head and the tail of the chain can
add new participants.
First Friend
(B)
(A)
Second Friend
(C)