Zte A16 User Manual page 33

waiting, Call keeping, Multiparty need network to support. If you need those
services, please contact your network service provider.
If you couldn't answer the call, press BUSY to send busy tone to the caller.
You can do the following operations in the call menu:
Mute: Don't send local voice.
Speaker Volume: Adjust earpiece volume.
DTMF On/Off: Enable or disable sending DTMF tone.
Hold/ Retrieve: Keep the current call/Resume the kept call.
Multiparty
Join All: Add the current call to Multiparty.
Hold All Calls: Hang on all calls.
Private: Converse with one side privately and keep the session with the other
one.
Exclude: Keep one call from Multiparty.
End All Calls: End up the current call and the hang-on calls.
Note: Some menu items can only appear in special cases.
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