Lighting strike takes out surge protector (which is a good thing) but only on this one system.
Your telephone company should have grounded this when they installed service. Contact your phone company.
the box outside of your home should be grounded. This either would be a NID or protector. there is a copper bar inside of this box, a solid copper wire i believe #8 gauge (not completely sure, a smaller gauge is proballay good enough) it should be connected to either a copper water pipe (if your local building codes allow for plastic water supply lines, then this may not be a good ground) the conduit pipe where your electric wiring comes into your home (if your local building codes allows for plastic conduit, instead of metal, this may not be a good ground) or a copper grounding rod burried in the dirt several feet. ground wire should be as short as possible (electricity travels the least resistance, if the wire to your phone is shorter then the ground wire, it may not be very efffective) there should be no 90 degree bends in the ground wire, use 45 degree bends aside from this grounding, the terminal should be grounded. While the terminals are normallay grounded, the NID or protector is not always grounded by the teleco many places that sell phone systems will also sell a secondary surge protector to connect your phone lines to, and some of the power strip surge protectors have a connection for phone and cable lines
