Quote:
Originally Posted by John Mason 
No reason Verizon couldn't adopt what the older cable companies have in the works: switched broadcasting (SB), summarized in this recent post . SB differs from per-channel subscribing but in some ways has similar results. -- John
EDIT:Perhaps someone will differentiate between SB and IPTV (post above); they seem very similar. IPTV = internet protocol TV.

No reason Verizon couldn't adopt what the older cable companies have in the works: switched broadcasting (SB), summarized in this recent post . SB differs from per-channel subscribing but in some ways has similar results. -- John
EDIT:Perhaps someone will differentiate between SB and IPTV (post above); they seem very similar. IPTV = internet protocol TV.
Switched broadcasting and IPTV do work in the same type of way but they are different. For a basic overview of the difference please read below.
With IPTV everything is sent as data or packets so you would tune a TV channel in a similiar way to streaming a music video from say Yahoo Launch.
With switched broadcasting the TV program is still being sent as a video file and not as a data file. So in simple terms you would tune into a channel number and the set-top box would tell the head-end to send "this" feed down to this box. This feed is still in MPEG2 and QAM 256 is still being used. By using switched video a cable company if in the event of hardware failure can switch off to sending everything down the pipe even if that means not being able to offer the full lineup of channels. Its better to have to not offer 10+ HD channels compared to not being able to offer anything at all. That is the drawback with IPTV is that if that hardware crashes and burns you have no backup.
I hope this gives you an idea of the difference of these two options.














