Cable/Satellite are broadcast systems - meaning you get all the content available coming at you all the time. This makes VOD and other advanced services more challenging and more restrictive. IPTV on the other hand, delivers to you only the content you are watching or recording at the time. What is sent to you over your IP connection is completely configurable and dynamic.
Most of the capabilities of Cable/Satellite and IPTV are the same - ability to "tune" to a station and watch or record it. But the features possible with IPTV are far more extensive. For example, you could define a custom set of channels and see a tiled view of those channels. You could start watching a recording on your TV, pause, and continue watching on your cellphone or computer.
Because the video stream delivered to you is switched, there is really no limit to the number of channels, unlike with Cable which has a limited bandwidth (large, but still finite). This makes Cable companies choose which channels they will deliver. Rogers has started to compress some HD channels to fit more in. With IPTV, there would be no need to compress to enable more channels (but compression is important to limit the bandwidth required and permit more concurrent streams given a fixed bandwidth).
You can check out the possibilities by seeing what AT&T has done with their U-verse service. Of course who knows what Bell might do in the future, but the possibilities are there.
Most of the capabilities of Cable/Satellite and IPTV are the same - ability to "tune" to a station and watch or record it. But the features possible with IPTV are far more extensive. For example, you could define a custom set of channels and see a tiled view of those channels. You could start watching a recording on your TV, pause, and continue watching on your cellphone or computer.
Because the video stream delivered to you is switched, there is really no limit to the number of channels, unlike with Cable which has a limited bandwidth (large, but still finite). This makes Cable companies choose which channels they will deliver. Rogers has started to compress some HD channels to fit more in. With IPTV, there would be no need to compress to enable more channels (but compression is important to limit the bandwidth required and permit more concurrent streams given a fixed bandwidth).
You can check out the possibilities by seeing what AT&T has done with their U-verse service. Of course who knows what Bell might do in the future, but the possibilities are there.