what is this IPTV

andrew.shearman · 25-11-2009, 15:48

hi what is this IP tv and what does tivo have to do with it

altis · 25-11-2009, 15:54

http://en.wikipedia.org/wiki/Iptv

http://en.wikipedia.org/wiki/Tivo

Joedm45 · 26-11-2009, 07:54

Sorry to hijack the thread.

I also have a question regarding IPTV. Can the VM network handle IPTV? We occassionally hear on this forum about areas that suffer from poor service due to over subscription so was wondering if this will potentially be a victim of its own success?

Unless they are planning a huge upgrade of the network that the public do not know about?

**Graham M** · 26-11-2009, 08:04

<Theory>

If they dropped Cable TV entirely and replaced it completely with IPTV then there would be massive ammounts of bandwidth freed up, IPTV only uses Bandwidth for the channel it's watching/recording whereas all channels need to be transmitted at all times on regular Cable

**Stuart** · 26-11-2009, 09:10

Quote:

Originally Posted by Graham M

<Theory>

If they dropped Cable TV entirely and replaced it completely with IPTV then there would be massive ammounts of bandwidth freed up, IPTV only uses Bandwidth for the channel it's watching/recording whereas all channels need to be transmitted at all times on regular Cable

Depends how it is implemented. Certain US CATV providers now used switched networks. Essentially, certain channels are only broadcast to an area if they are being watched. As soon as the last viewer switches off or changes channel, the channel is no longer sent.

Ignitionnet · 26-11-2009, 09:15

Quote:

Originally Posted by Joedm45

Sorry to hijack the thread.

I also have a question regarding IPTV. Can the VM network handle IPTV? We occassionally hear on this forum about areas that suffer from poor service due to over subscription so was wondering if this will potentially be a victim of its own success?

Unless they are planning a huge upgrade of the network that the public do not know about?

IPTV is far more efficient than the current TV platform. It will result in bandwidth savings of more than 50% according to trials and is nothing to do with oversubscription on the cable modem side. Quite the opposite it should free up some bandwidth for VM to increase cable modem bandwidth.

ShadowTD · 26-11-2009, 09:59

Quote:

Originally Posted by Stuart C

Depends how it is implemented. Certain US CATV providers now used switched networks. Essentially, certain channels are only broadcast to an area if they are being watched. As soon as the last viewer switches off or changes channel, the channel is no longer sent.

Aye, but that's SDV (Switched Digital Video). I'd ruddy well hope we never get to that point. Proper multicast IPTV would be an epic bandwidth saver. Can the usual guys-in-the-know tell us how well equipped the VM backbone is for multicasting?

TheDon · 26-11-2009, 12:02

Quote:

Originally Posted by ShadowTD

Aye, but that's SDV (Switched Digital Video). I'd ruddy well hope we never get to that point. Proper multicast IPTV would be an epic bandwidth saver. Can the usual guys-in-the-know tell us how well equipped the VM backbone is for multicasting?

SDV IS proper multicast IPTV.

ShadowTD · 26-11-2009, 16:01

I sit here corrected!

I'd gained the impression that it was much more kludgy than that.

zantarous · 28-11-2009, 01:44

With multicasting is there a danger that channel changing could become very slow, and I mean even slower then it currently is on a SA V+?

TheDon · 28-11-2009, 10:42

Quote:

Originally Posted by zantarous

With multicasting is there a danger that channel changing could become very slow, and I mean even slower then it currently is on a SA V+?

Worst case you're looking at 300ms for the entire process of STB requesting the channel and it being available to be tuned, under usual working conditions it's around 100ms, so any added delay is really negligible.

johnw1951 · 28-11-2009, 21:36

Quote:

Unless they are planning a huge upgrade of the network that the public do not know about?

http://newsroom.cisco.com/dlls/2009/prod_091109.html

HDFootyMan · 29-11-2009, 14:11

Quote:

Originally Posted by Broadbandings

IPTV is far more efficient than the current TV platform. It will result in bandwidth savings of more than 50% according to trials and is nothing to do with oversubscription on the cable modem side. Quite the opposite it should free up some bandwidth for VM to increase cable modem bandwidth.

And more HD channels! Don't forget the HD channels.

joglynne · 29-11-2009, 14:58

I am sorry if this is a silly question but would the new platform work with the existing STBs?

OLD BOY · 29-11-2009, 15:42

IPTV, with the Cisco and TIVO partnerships, looks like bringing to us much more flexibility to view programmes on our TVs, linking in to films and programmes that are available on the internet as well as those programmes available through conventional linear channels and VOD.

This is brilliant news. We will have so much entertainment choice we will never be stuck for anything to watch that's worth viewing again.

Does anyone have any technical knowledge regarding how this may enable VM to extend their boundaries into non cabled areas? Or would we have to wait for BT to complete their fibre optic cabling around the country?