Some analogue variants for different communication scenarios I heard of, but can't comply since i am nerd:
- in your neighborhood, same street, also from hill to hill: SHOUTING or YELLING (if just for signalling things, FIRE works also)
- bit farther away: SCREAM LOUDER (just signals, more noise, like twitter)
- same city: write on PAPER, drive bicycle and insert into mailbox (afterwards drive home)
- other city/country: CALL BY PHONE (moment of silence when waiting for answer is tense)
- all above but addressing many people: the above ONE AFTER THE OTHER