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TKJunkMail
Enjoy the sun
Premium
join:2002-03-03
Avalon, NJ
 ·Sprint Mobile Broa..
 ·Comcast
| reply to N3OGH
Re: If Verizon can provide a shareable DVR, why not Comcast ?
Comcast is also part of the MOCA alliance that allows distribution of video between STBs. This is what Verizon uses and what Comcast says they will use. When is the key question.
»www.mocalliance.org/en/aboutus/faq.asp#1
MoCA is an open, standard body promoting networking of multiple streams of high definition video and entertainment using existing coaxial cable already in the home.
MoCA is the standard for home entertainment networks over coax. We call it multiroom DVR. It is applicable for television programming, gaming, content sharing, and PC to TV and back again, transfer of content.
MoCA is led by a board of directors (Promoters) representing some of the most-respected names in broadband entertainment including Broadcom, Cisco, Cox Communications, Comcast, EchoStar, Entropic Communications, Motorola, NXP, Panasonic and Verizon.
MoCA is in full deployment through Verizon's FiOS TV program. Many other cable and telco service providers will be entering into trials and field tests in 2008. Verizon's ONT isn't necessary to do multi-room DVR.
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N3OGH
Bear patrol must be working like a charm
Premium
join:2003-11-11
Philly burbs
 ·Verizon FIOS
 ·Verizon Online DSL
| I didn't say an OTN was necessary, I don't think you understand the issue well.
The coax used inside a Comcast subscriber's home is directly connected to Comcast's network. The coax in a Verizon subscriber's home is not. The idea that the ONT is there, is MOOT.
Comcast will have to implement some way of isoloating the set top boxes in the subscriber's house from the rest of their network in order to make this work for them. Otherwise, too much bandwidth will be eaten up by DVR boxes talking to each other.
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Petty people are disproportionably corrupted by petty power… | |
Vchat20
Landing is the REAL challenge
join:2003-09-16
Warren, OH
clubs: 
| said by N3OGH  :I didn't say an OTN was necessary, I don't think you understand the issue well. The coax used inside a Comcast subscriber's home is directly connected to Comcast's network. The coax in a Verizon subscriber's home is not. The idea that the ONT is there, is MOOT. Comcast will have to implement some way of isoloating the set top boxes in the subscriber's house from the rest of their network in order to make this work for them. Otherwise, too much bandwidth will be eaten up by DVR boxes talking to each other. What are you talking about? First of all, the RF signal passing through the ONT is still 2-way just like traditional HFC cable systems. For all intents and purposes, FiOS tv and Cable systems are the exact same thing, just the fiber-to-coax media converter is moved right up to each house. Beyond that, same stuff. They are pushing the same bandwidth munching channels over, etc..
Secondly, technology has been available for a while now for cable providers to do whole home networked dvr's which consists of a specially designed switch connected where the cable enters the house and all dvr's run off that. No bandwidth issues or anything.
And bandwidth really isn't an issue. Really all you'd need is the equivalent of one channel per client STB to feed the video over. If they really wanted to be bandwidth-conscious, they could program the network dvr subsystem to allow up to 2 or 3 client STB's per channel (following the same 2-3 HD per QAM channel as the upstream cable plant, ~6 SD channels per, etc.) and then open a new one should more be added.
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I swear, some people should have pace-makers installed to free up the resources. Breathing and heart beat taxes their whole system, all of their brain cells wasted on life support.-two bit brains, and the second bit is wasted on parity! ~head_spaz | |
N3OGH
Bear patrol must be working like a charm
Premium
join:2003-11-11
Philly burbs
·Verizon FIOS
·Verizon Online DSL
| said by Vchat20 :said by N3OGH :I didn't say an ONT was necessary, I don't think you understand the issue well. The coax used inside a Comcast subscriber's home is directly connected to Comcast's network. The coax in a Verizon subscriber's home is not. The idea that the ONT is there, is MOOT. Comcast will have to implement some way of isoloating the set top boxes in the subscriber's house from the rest of their network in order to make this work for them. Otherwise, too much bandwidth will be eaten up by DVR boxes talking to each other. What are you talking about? First of all, the RF signal passing through the ONT is still 2-way just like traditional HFC cable systems. Not if the ONT doesn't pass the signals upstream, Einstein.
The ONT isolates the coax inside the house from the rest of the network, so instead of being part of the entire cable TV plant, per se (like the cable that's in a Comcast subscriber's house) the coax inside a Verizon subscriber's house is using RF via the coax all ready installed in the house.
The bottom line is, in a system where you can watch DVR stored content on another digital box in the house, it has to transmit RF energy to the other box.
In a pure coax fed cable environment, that transmission has to be filtered at the demarcation point so it doesn't pollute the outside system.
So, either Comcast (or any provider for that matter) has to install a filter that traps the frequency they're using to transmit the DVR content to another box.
Or, if you have a system that uses fiber to the demarc point, you simply program the NID, whatever that may be, in Verizon's case an ONT to IGNORE IT.
Either way, the RF energy the DVR box is using to transmit content to another box must be stopped at the demarc point...
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Petty people are disproportionably corrupted by petty power… | |
Vchat20
Landing is the REAL challenge
join:2003-09-16
Warren, OH
clubs:
| And that is the whole reason for the aforementioned specialized splitter that HAS been available in addition to networked dvr's being available to cableco's for years now.
Comcast, Time Warner, etal have all had the ability to do it. They just haven't. | |
N3OGH
Bear patrol must be working like a charm
Premium
join:2003-11-11
Philly burbs | I totally agree.... | |
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