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