The witness node can be unreachable at times due to several reasons. In order to overcome this situation the following ideas and plans can be helpful.
Create a witness chat room with group call functionality.
The witnesses should keep note of cell numbers of other witnesses as much as possible.
At least, one group where all the witness/ SONs should reside.
Create a separate portion for Witnesses in Scenes
A Dashboard to track the status of witnesses and chains.
Can we create a witness buddy system
Cross-post calls for action - Rocket chat, Telegram, Scenes, etc.,
Get familiar with common hubs used by witnesses
In order to find the solution/ to know in details about the risk that has happened, responder team is one to be communicated first.
Firstly, the Witnesses themselves have to communicate about the problem with the team. So that, the issue will be know to the team and solution can be provided at the earliest.