LG C3100 Guide De L'utilisateur page 117

In call Menu
2-5 Adding Calls to the Multiparty Call
To join an active call to the held multiparty call, select < [Options]
then Multiparty / Join all.
2-6 Displaying Callers in a Multiparty Call
To scroll though the numbers of the callers who make up a
multiparty call on the handset screen, press D and U keys.
2-7 Putting a Member of a Multiparty Call on Hold
To place one selected caller (whose number is currently displayed
on-screen) of a multiparty call on hold, select < [Options] then
Multiparty / Exclude.
2-8 A Private Call in a Multiparty Call
To have a private call with one caller of a multiparty call, display the
number of the caller you wish to talk to on the screen, then select
< [Options] and Multiparty / Private to put all the other callers on
hold.
2-9 Ending a Multiparty Call
The currently displayed caller of a multiparty call can be
disconnected by pressing the E [End] key. To end a multiparty call,
press < [Options] then select Multiparty / End multiparty.
Selecting < [Options] then Multiparty / End all, will end all the
active and held calls.
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