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.