In reply to a post by candlerb:

Don't do media converters. A switch will be more reliable, and if it's a managed switch and your SFP modules support DOM (which most do), then you'll be able to check the light levels.

In reply to a post by MHC:

Until lighting hits ... having had it come in through both phone line drop wire and underground power it is not nice. My old switch has a hole burnt through the metal case!