Enable VoIP conditions in self_test.prm
This is a supplementary merge request for !289 (merged). It re-enables VoIP conditions in self_test.prm that had to be removed before merging !289 (merged).
This is a supplementary merge request for !289 (merged). It re-enables VoIP conditions in self_test.prm that had to be removed before merging !289 (merged).