These suppressors did a pretty good job. Those black RJ14 connectors were clear before the strike! –I don’t have a lot of experience with lightning strikes, but I doubt this was a direct hit…

You can see the burn behind the suppressor I removed from the wall. The phone system, modems, and fax machine survived. The postage machine died.

Here’s a hit with NO protection! Interestingly, the feeder, and cross connect carried the current. The heat/fire occurred at the connection points. (hard wired, and modular) Based on the areas burned I could clearly trace the route of the incoming lines onto the top block, then cross connect onto the lower block before interfacing with the Panasonic 1232 phone system.

Can't see it in this picture, but those blocks are not only charred, but badly melted too.