Hospital pager wireless or wired, advertising don't answer!

The pros and cons of each, wired to receive the signal is 99% under normal circumstances, wireless better pager, like the cat is almost 98%, but also under normal circumstances, the difference between the two will not be too far, but the maintenance of the wireless is more advantageous, do not have to destroy the wall to solve the problem, the times are progressing, the wireless thing must replace wired, but if it is a heavy ward it is best to use the wired. Wired, in case the wireless did not point, that is a cup of ah, under normal circumstances can be considered a combination of both, heavy wards intensive care ward with limited, hall infusion room with wireless, because the infusion room is busy, bad frequency is higher, with wireless or more convenient!