It is for those cases (Playback, etc.) that you need internal timing. 13 is recent in my terms, but the internal timing option still exists, I’m not sure if you still need it in those cases, or what the current default is, but it is:
; Enable internal timing support (-I)
internal_timing = yes | no
However, if you need it, there isn’t a real person at the end of the call, so if the service provider wants to ensure a real person, it would be working as they wanted if Playback didn’t correctly substitute for a real person.