TV over ADSL

[pa]

is it possible 4 my telephone company to provide digital tv over ADSL? is it fast enough or would they need VDSL?

[Xayd]

I think it'll be more common in the future to see things like Sprint is doing with their "Ion" DSL. Not TV, but phone, fax, voice mail, long distance, and internet combos.

Offering TV over standard copper lines that have been in the ground all this time would seem like a stretch of the capabilities of the physical line to me.

Xayd

[pa]

this is what my phone company is thinking of doing [eircom] there an irish firm

[HAL9000]

Yea, our telco has been talking about it for two years now, have yet to see anything with it though.

[pa]

but is it possibe over adsl?

[HAL9000]

Are you thinking without a TV card in your machine? I doubt it, you're still going to need hardware to add TV capability to your computer. As far as I know, there is no software only solution.

[pa]

no they are going 2 supply digital tv to my tv not my computer over adsl i was wondering if it was fast enough?

[HAL9000]

Well, it wouldn't be through ADSL specifically. It all comes down to running through the two copper wires in your phone line, then gets separated. As far as I understand it, a filter is installed to the phone line for ADSL to work and that they would probably use the same method, install a filter to receive a signal from a specific frequency. But yes, apparently TV can be transmitted through the phone lines.

[pa]

THANX

[audiyoda]

The big question is HOW MUCH broadcast TV can be sent over a twisted pair. Just for argument's sake, let's consider current NTSC broadcasts. Currently, the given bandwidth for such a broadcast is 1 Ghz. Meaning, every station has 80Mhz of available broadcast room with a 10Mhz 'buffer' on each side. New digital broadcasts (in the US) will be (and are in many cities) allowed 5 GHz of broadcast bandwidth with really no buffer. So in this configuration, no way can either broadcast method be transferred over a twisted pair.

Add digital compression to the mix.....It's easy (at least in the NTSC model). Why do you think cable providers want you to sign up for digital cable? They can provide 3-6 times the current channel line-up in half the needed bandwidth. That extra bandwidth can go for their ISP, interactive TV or anything else. Estimates that I've seen around here (MSU) regarding telco's offering thier own form of 'cable' TV shows that with new compression technology based on MPEG-2 layer 4 they can deliver 140 channels on a single twisted pair.

-Craig

[pa]

cool i think ill b getting digital tv and ADSL then