Half-life V1.1.0.8 — Pc

: This patch officially added built-in voice chat to Half-Life , allowing players to coordinate in real-time during Deathmatch sessions.

“WON versions up to 1.1.0.8 don't have the bunnyhop speed cap, but they also don't allow the player to exceed the 100fps limit...” SourceRuns Wiki Half-life v1.1.0.8 PC

“You must upgrade Half-Life to version 1.1.0.8 and Counter-Strike to version 1.3... you cannot join servers that have yet to upgrade to the new versions.” Planet Half-Life : This patch officially added built-in voice chat