Commit 875189 and PR #196 introduced new sv_alltalk modes. This wiki article should clarify all questions regarding to them.

How to read.

Every column contains teams and check mark (or ❌) determines whether team in the row can hear them. For example, if sv_alltalk is 2 then an alive counter-terrorist can hear hear his teammates, but can't hear spectators or terrorists. For sake of readability and size counter-terrorist is abbreviated CT and terrorists is abbreviated T.

sv_alltalk "0"

Team	Alive CT 🗣️	Alive T 🗣️	Dead CT 🗣️	Dead T 🗣️	Spectator 🗣️
Alive CT 👂	✅	❌	❌	❌	❌
Alive T 👂	❌	✅	❌	❌	❌
Dead CT 👂	✅	❌	✅	❌	❌
Dead T 👂	❌	✅	❌	✅	❌
Spectator 👂	❌	❌	❌	❌	✅

sv_alltalk "1"

Team	Alive CT 🗣️	Alive T 🗣️	Dead CT 🗣️	Dead T 🗣️	Spectator 🗣️
Alive CT 👂	✅	✅	✅	✅	✅
Alive T 👂	✅	✅	✅	✅	✅
Dead CT 👂	✅	✅	✅	✅	✅
Dead T 👂	✅	✅	✅	✅	✅
Spectator 👂	✅	✅	✅	✅	✅

sv_alltalk "2"

Team	Alive CT 🗣️	Alive T 🗣️	Dead CT 🗣️	Dead T 🗣️	Spectator 🗣️
Alive CT 👂	✅	❌	✅	❌	❌
Alive T 👂	❌	✅	❌	✅	❌
Dead CT 👂	✅	❌	✅	❌	❌
Dead T 👂	❌	✅	❌	✅	❌
Spectator 👂	❌	❌	❌	❌	✅

sv_alltalk "3"

Team	Alive CT 🗣️	Alive T 🗣️	Dead CT 🗣️	Dead T 🗣️	Spectator 🗣️
Alive CT 👂	✅	❌	✅	❌	❌
Alive T 👂	❌	✅	❌	✅	❌
Dead CT 👂	✅	❌	✅	❌	❌
Dead T 👂	❌	✅	❌	✅	❌
Spectator 👂	✅	✅	✅	✅	✅

sv_alltalk "4"

Team	Alive CT 🗣️	Alive T 🗣️	Dead CT 🗣️	Dead T 🗣️	Spectator 🗣️
Alive CT 👂	✅	✅	❌	❌	❌
Alive T 👂	✅	✅	❌	❌	❌
Dead CT 👂	✅	✅	✅	✅	✅
Dead T 👂	✅	✅	✅	✅	✅
Spectator 👂	✅	✅	✅	✅	✅

sv_alltalk "5"

Team	Alive CT 🗣️	Alive T 🗣️	Dead CT 🗣️	Dead T 🗣️	Spectator 🗣️
Alive CT 👂	✅	❌	❌	❌	❌
Alive T 👂	❌	✅	❌	❌	❌
Dead CT 👂	✅	✅	✅	✅	✅
Dead T 👂	✅	✅	✅	✅	✅
Spectator 👂	✅	✅	✅	✅	✅