Just try sending this to a single player and see if he can hear anyone or not:
Code:
message_begin(MSG_ONE,gmsgVoiceMask,{0,0,0},id);
write_long(1<<(id-1));
write_long(0);
message_end();
Note then when any player spawns or dies, the VoiceMask message is sent again, which will override whatever you set it to. I'd just put the above in a say command hook, get you and one other player on your team, and then do a before and after as to if he can hear you or not.
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No longer around. Thanks your support, everyone! As always:
THIS ONES FOR YOU
3000 PTS