hold on
call back
cut off
put through
get through
pick up
get back to
speak up
hang up
break up
to return a phone call
to return to someone after taking some time to think
to turn inaudible over the phone
to wait and stay connected during a phonecall
talk louder
to transfer a phonecall from one person to another
to suddenly lose connection or end a call.
to end a phonecall by putting the receiver down
to succeed in speaking to someone on the phone
answer the phone