Lyric discussion by Suhmer 

Well there is a long silence (half a minute long) at the end of the song, so that must mean that all connection is lost. Which really leaves a sad message, that the person is definitely gone.

It could mean that he had just lost someone in his life, he was trying to contact them but the person won't talk to him or that the person was dead and he could, again, no longer contact them.

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