That would explain Star Trek teleportation between two teleporter stations - where the necessary hardware exists to reconstitute matter - but how did teleportat

That would explain Star Trek teleportation between two teleporter stations - where the necessary hardware exists to reconstitute matter - but how did teleportation to/from random planet surfaces work? Why have teleporter suites in ships when they can apparently beam people directly from a planet’s surface to sick-bay, for example.