Room continuity: panel, backup, and staged upgrades
Conceptual AV coordination diagram; it does not represent a completed installation or construction drawing.

Intended use: ____________________

Affected zone and destinations: ____________________

Known devices and versions: ____________________

Expected / observed / unavailable state: ____________________

Who retains control: ____________________

Documented manual alternative: ____________________

Open question and next step: ____________________

Without Internet: review dependencies by function
Proposed criterion: each priority function has identified dependencies and a next step when a resource is unavailable.
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After a restart: plan a return to a known state
Review scenario: the panel returns before the display. What does it tell the user, and who confirms when the presentation may resume?
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Clear panel: give actions and states different names
Design review question: without device feedback, does the panel show uncertainty or assert a state that nobody confirmed?
____________________

Backup and handover: know what each file preserves
Proposed handover criterion: the responsible person can identify the right backup, its requirements, and outstanding checks without guessing its contents.
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Upgrade in stages: keep what works
Commercial next step: describe the main obstacle, room use, and installed equipment. That provides a basis for reviewing options and defining a proposal.
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Matrix to complete for the actual installation
Task	Device / local network	Internet	Account / license	Fallback to define
Show computer	Identify path	Confirm dependency	Confirm requirements	Documented manual path
Play online content	Identify player	Confirm required access	Confirm service	Alternative source or content
Check booking	Identify interface	Confirm synchronization	Confirm provider	Staff-assisted inquiry

Interface text examples; these are not operational controls
Situation	Proposed text	Decision it supports
Interface received request	Shutdown requested	Wait for result; avoid repeating the whole scene
Device feedback missing	State unconfirmed	Review using the intended manual path
Valid feedback under the interface	Display off	Continue checking other destinations