| 摘要 |
A system and method using digital technologies to deliver a live-video-all-call bulletin over a local area network (LAN) in a facility, e.g., a school. The live video overrides all the facility's video-player devices by pausing them. Once the live-feed-video presentation is over, the system returns all of the facilities video players to the same state of operation each was in before the all-call presentation began.
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