LG C1100 - Manual (Page 25)

Additional Functions
25
2-1 Making a Second Call
You can make a second call while you are already in a call. To do
this, enter the second number and press
S [Send]. When you get
second call the first call is automatically put on hold. You can swap
between calls by selecting
<[Options] then Swap.
2-2 Setting up a Multiparty Call
You can connect a call on hold to the currently active call to form a
multiparty call by selecting
<[Options] then Multiparty / Join all.
2-3 Putting the Multiparty Call on Hold
To put a multiparty call on hold, select
<[Options] then
Multiparty / Hold all.
2-4 Activate the Multiparty Call on Hold
To make a multiparty call on hold active, select
<[Options] then
Multiparty / Join all.
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
U and D keys.