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).
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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).