No, I didn't see it on the original firmware nor my current version. There are few links in this forum that go to other versions of the firmware, do a search for "firmware".Does 171218 have RTSP Authentication options? I've searched the Laview website and I can not find a FW release for this doorbell. Many of their cameras and NVRs have FW releases posted but not the doorbell.
Neilly posted the 17218 firmware:
NSC-DB1 Onvif Compatible Wifi Doorbell 1080P IP Camera W/ 32GB Built-in Storage - Nelly's Security