If you are missing the new voice chat system the following should be added to your custom
eq2ui_mainhud.xml (if you have one).
Code:
<include>eq2ui_mainhud_voicebar.xml</include>
<include>eq2ui_mainhud_voicebar_popup.xml</include>
<include>eq2ui_mainhud_voicechat.xml</include>
<include>eq2ui_mainhud_voiceoptions.xml</include>