[Freeswitch-users] sip_invite_params for all outgoing calls

Hi, Is it possible to set "sip_invite_params='user=phone'" for all outgoing calls / all outgoing calls using a specific gateway? I'm searching a solution which work with the dialplan and also with calls over mod_event_socket and "originate". I tried to set the variable in "conf/sip_profiles/external.xml" and "conf/sip_profiles/external/outgoing.xml" but I don't know if this was the wrong place or if I was just using the wrong syntax. Thanks, René