diff --git a/README.md b/README.md
index caf5a2eb..b8a3a7ab 100644
--- a/README.md
+++ b/README.md
@@ -41,7 +41,7 @@ Archive's bin directory contains 2 subdirectories, 'bugfixed' and 'pure'
 | mp_timelimit                  | 0       | -   | -            | Period between map rotations.<br />`0` means no limit |
 | mp_forcerespawn               | 0       | 0   | -            | Players will automatically respawn when killed.<br/>`0` disabled<br/>`>0.00001` time delay to respawn |
 | mp_hostage_hurtable           | 1       | 0   | 1            | The hostages can take the damage.<br/>`0` disabled<br/>`1` enabled |
-| mp_show_radioicon           | 1       | 0   | 1            | Show radio icon.<br/>`0` disabled<br/>`1` enabled |
+| mp_show_radioicon             | 1       | 0   | 1            | Show radio icon.<br/>`0` disabled<br/>`1` enabled |
 | showtriggers                  | 0       | 0   | 1            | Debug cvar shows triggers. |
 | bot_deathmatch                | 0       | 0   | 1            | Set's the mode for the zBot.<br/>`0` disabled<br/>`1` enable mode Deathmatch and not allow to do the scenario |
 | bot_quota_mode                | normal  | -   | -            | Determines the type of quota.<br/>`normal` default behaviour<br/>`fill` the server will adjust bots to keep `N` players in the game, where `N` is bot_quota |
diff --git a/dist/game.cfg b/dist/game.cfg
index 342c869b..d3575c0c 100644
--- a/dist/game.cfg
+++ b/dist/game.cfg
@@ -154,3 +154,12 @@ bot_quota_mode "normal"
 //
 // Default value: "0"
 showtriggers 0
+
+// When teammates can hear each other.
+// 0 - dead don't hear alive
+// 1 - no restrictions
+// 2 - teammates hear each other
+// 3 - same as 2, but spectators hear everybody
+//
+// Default value: "0"
+sv_alltalk 0
diff --git a/regamedll/dlls/multiplay_gamerules.cpp b/regamedll/dlls/multiplay_gamerules.cpp
index 527447df..ade05a16 100644
--- a/regamedll/dlls/multiplay_gamerules.cpp
+++ b/regamedll/dlls/multiplay_gamerules.cpp
@@ -87,6 +87,18 @@ void EXT_FUNC CHalfLifeMultiplay::__API_HOOK(ServerDeactivate)()
 
 bool CCStrikeGameMgrHelper::CanPlayerHearPlayer(CBasePlayer *pListener, CBasePlayer *pSender)
 {
+#ifdef REGAMEDLL_ADD
+	switch ((int)sv_alltalk.value)
+	{
+	case 2:
+		return (pListener->m_iTeam == pSender->m_iTeam);
+	case 3:
+		return (pListener->m_iTeam == pSender->m_iTeam || pListener->IsObserver());
+	default: // HLDS Behavior
+		break;
+	}
+#endif
+
 	if (
 #ifndef REGAMEDLL_FIXES
 		!pSender->IsPlayer() ||
diff --git a/regamedll/game_shared/voice_gamemgr.cpp b/regamedll/game_shared/voice_gamemgr.cpp
index 02494183..c0dba2d2 100644
--- a/regamedll/game_shared/voice_gamemgr.cpp
+++ b/regamedll/game_shared/voice_gamemgr.cpp
@@ -74,6 +74,7 @@ void CVoiceGameMgr::Update(double frametime)
 	// Only update periodically.
 	m_UpdateInterval += frametime;
 
+	const float UPDATE_INTERVAL = 0.3f;
 	if (m_UpdateInterval >= UPDATE_INTERVAL)
 		UpdateMasks();
 }
@@ -153,7 +154,7 @@ void CVoiceGameMgr::UpdateMasks()
 {
 	m_UpdateInterval = 0;
 
-	bool bAllTalk = !!(sv_alltalk.value);
+	bool bAllTalk = sv_alltalk.value != 0.0f;
 
 	for (int iClient = 0; iClient < m_nMaxPlayers; iClient++)
 	{
diff --git a/regamedll/game_shared/voice_gamemgr.h b/regamedll/game_shared/voice_gamemgr.h
index d81d3ac2..d1a6640d 100644
--- a/regamedll/game_shared/voice_gamemgr.h
+++ b/regamedll/game_shared/voice_gamemgr.h
@@ -28,8 +28,6 @@
 
 #pragma once
 
-#define UPDATE_INTERVAL 0.3
-
 #include "voice_common.h"
 
 class CGameRules;
@@ -84,4 +82,6 @@ private:
 	double m_UpdateInterval; // How long since the last update.
 };
 
+extern cvar_t sv_alltalk;
+
 void VoiceServerDebug(const char *pFmt, ...);