Samsung SGH-T519 - Manual (Page 45)

Section 3: Call Functions 41
Selecting Functions and Options
Sect
ion 3
2. To switch between the two calls, press the Options soft
key, highlight Swap and press the Select soft key or the
key.
To end a call on hold, press the Options soft key and
select the End held call option. Then press the Select
soft key or the
key.
To end the current call, press the key.