It is highly recommended that you have a remote mechanism to reboot, or power cycle, your equipment in the field. Unforeseen or low probability events can be difficult to bench-test for. It is generally good practice to have some mechanism to turn it off and back on again and having a planned remote way to do this can save time and effort of having to physically travel to the site. Many hardware vendors will include a scheduled reboot option in their firmware. Some hardware vendors also include SMS as a channel to reset equipment outside the primary IP link.