- Border Routers
- Router-eligible End Devices (REEDs)
- Sleepy End Devices
It is implied by the document that Routers must be able to constantly supply themselves with electricity (hence REEDs must also be able to run constantly if they are upgraded to Routers). However, can REEDs save power and sleep if they aren't currently being used as routers, or must they always be on in case they are needed?
Take, for example, a smart TV supporting Thread, currently acting as a REED. Since no other devices depend on it while it is a REED, can it suspend its network connection and act as a Sleepy End Device, or does the networking component need to be on all the time?