I am wondering how can a P25 repeater identifies, even in commercial application at 15 minute intervals? How would the FCC knows it's operational or not?
In amateur application, at least a CW IDer. Voice is nicer.
And who is going to hear it anyway? It won't come thru your P25 radio
Since you didn't quote anyone's message we have no way of knowing what you are talking about or referring to.
If by chance you are referring to the original post, anyone that has a P25 radio, receiver, or <$50 in hardware with some ambition and a working knowledge of linux would be able to hear a voice ID broadcast in P25 mode, just as with anything other P25 voice traffic.
And unless something changed, audio transmitted in unencrypted P25 voice frames will certainly be heard through a properly programmed P25 radio.