All FiOS channels (except for video on demand) are sent at all times. This means that your TV or set-top box does not need to communicate with the service when tuning to a channel. This also allows the use of CableCard (such as with a TiVo Series 3) in place of a set top box. CableCards can't send signals, only receive them.
Other FAQ Answers which state that FiOS sends TV signals on an as-needed basis are not correct.
Written by Paul Casey
Last updated on 08.05.08