ZTC ZT688, User Manual

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- “ Answer ”
To pick up a waiting incoming call and
join it with a multiparty call
- “ Join all ”
To add a caller to a multiparty call.
- “ Hold all calls ”
To put a conference call on hold.
- “ Private ”
To carry on a call privately with one party
while keeping all the other parties on hold.
- “ Transfer ”
To connect two parties and withdraw
oneself from the multiparty call.
- “ Exclude ”
To put one party of a group on hold.
- “ I am busy ”
To let a waiting incoming call hear a busy
signal.
- “ End all calls ”
To end current call and all calls on hold.
Note: Some of options show in certain condition,
such as, “Swap” shows only when there are
talking call and remained call.