Peace be upon you
this topic deals with the telephone phrasal verbs
cut off=to interrupt a telephone conversation
get through=to succeed in speaking to somebody on the telephone
hang on=to wait for a short time
hang up=to end a telephone conversation and put the phone down
call back=to telephone somebody again or in return
pick up=to answer a telephone call
put through=to connect by telephone
speak up=to speak louder
break up=to become inaudible over the telephone
hold on=to wait for a short time