Toggle VoIP (TSS ONLY)

From SWAT 4 wiki

Some players would prefer the ability to toggle the in-game VoIP (Voice over IP) effectively making it so you must push your key to begin the chat and then push it again to stop, instead of the usual method which requires you to hold the button down while talking. To allow this do the following:

Open the User.ini file in Sierra\SWAT 4\ContentExpansion\System (will only be created once you have played the game if this is a fresh install) and find the following line:

Aliases[37]=(Command="Button bVoiceTalk",Alias="VoiceTalk")

and change it to:

Aliases[37]=(Command="Toggle bVoiceTalk",Alias="VoiceTalk") 

see simple fix, hope it helps...