Yes, P38 unlimited calls to all network including landline. However, calls to special 1-800 / 1-300 #s will be charged according to service operators.
As of now, app-onz and music-onz are unlimited. They do have a disclaimer that they are both limited time offer only - until when, I have no clue. Video-onz is not free with P38 but it is free with P48 until 31st December 2017.

I called my number to check and wasn't directed to voicemail. So