Streams the audio of a call recording. This is the URL the recording read endpoints hand out in recording-url: it is signed, carries its own authentication, and is meant to be opened by a media player or a browser, not composed by hand.There is no bearer token on this path. The auth value is a signature over the other parameters, minted for the user named in uid when the recording metadata was read, and it expires. A request whose signature does not verify is answered 403; one whose recording is not on this server is answered 404.Every request for the start of the file is written to the compliance access log as a play event against the user the URL was minted for, whatever client made the request. Later byte-range requests for the same file are the same listen and are not logged again.Byte ranges (Range: bytes=...) are honoured and answered 206 Partial Content unless download is set or the platform disables ranged audio, in which case the whole file is returned in one 200.Until this route existed, playback went to the recording server's playback.php, which logged nothing. That page is deprecated. The NsRecordingPlaybackViaV2 flag restores the old URL as a revert lever only.