odindvatri
@rr.com
| reply to RustyTheDog
Don't you think Verizon is few years late?
While everywhere we hear 50, 100 and 1000 speed, here in US we have happy folks who just got 30 megs? My guess with backbone which Verizon has , when they start offering TV , speed will fall. I wouldn't trust them in a long term. I might be wrong, but in my opinion the future is in wireless so Verizon installs they spend billions on will in the near future become obsolete. Keep copper if possible. |
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Tzale
Proud Libertarian Conservative
Premium
join:2004-01-06
Sweden
 ·Verizon FIOS
 ·Optimum Online
| said by odindvatri :
While everywhere we hear 50, 100 and 1000 speed, here in US we have happy folks who just got 30 megs? My guess with backbone which Verizon has , when they start offering TV , speed will fall. I wouldn't trust them in a long term. I might be wrong, but in my opinion the future is in wireless so Verizon installs they spend billions on will in the near future become obsolete. Keep copper if possible.
You're wrong. TV, Internet and Voice are on separate fiber light bandwidth ranges. Meaning, they don't interfere with each other.
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Was ich nicht weiß, macht mich nicht heiß.~*~Keep learning because knowledge is the key to power.~*~Czego Jaś się nie nauczy, tego Jan nie będzie umiał. |
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tbeckner
join:2004-03-20
Bend, OR
1 edit | reply to odindvatri
said by odindvatri :
when they start offering TV , speed will fall. Why? FIBER can support 10Gbps today, so when IPTV is active there will not be any reason for the speeds to fall below quote. |
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EnasYorl
Thieves World
join:2001-12-02
West
 ·Verizon Online DSL
2 edits | reply to Tzale
said by Tzale  :said by odindvatri :
While everywhere we hear 50, 100 and 1000 speed, here in US we have happy folks who just got 30 megs? My guess with backbone which Verizon has , when they start offering TV , speed will fall. I wouldn't trust them in a long term. I might be wrong, but in my opinion the future is in wireless so Verizon installs they spend billions on will in the near future become obsolete. Keep copper if possible.
You're wrong. TV, Internet and Voice are on separate fiber light bandwidth ranges. Meaning, they don't interfere with each other. You are correct. BPON is a RF overlay where Verizon is using basically the same setup as a CATV provider. All TV channels are modulated RF then put on a Optical Transmitter at 1550nm infrared light (invisible) The ONT on the side of the house converts the light back into a CATV lineup on a COAX in RF form using Frequency Division Multiplexing.
The Data portion is 1490nm and 1310nm for Upstream and downstream traffic.
All these Colors of light ride the same strand of fiber. Two Colors going from the Central Office to the subscriber and the 1310nm goes from all the subscribers back to the Central office. One can assume the downstream channel tells the end users what time slot to transmit back so they do not collide. AKA Time Division Multiplexing. |
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DavidJWood
Premium
join:2001-10-12
UK
| reply to tbeckner
More than 10Gbps is possible on fibre circuits, but for those speeds you're talking about 'conventional' two fibre circuits. 400Gbps is possible with DWDM; the theoretical maximum with current DWDM technology, as I understand it, is 1.6Tbps (terabits per second).
FIOS is a PON type system, with a single fibre to the house, and passive splitters. The bandwidth possible is high but not as high as the sort of fibre topologies used for DWDM or even lower tech setups like 10Gbps Ethernet. 1.2Gbps downstream and 622Mbps upstream PON kit is available commercially - that bandwidth is shared between all the customers on one fibre, cable modem style.
David |
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BosstonesOwn
join:2002-12-15
Everett, MA
clubs:
·Comcast
| said by DavidJWood : 1.2Gbps downstream and 622Mbps upstream PON kit is available commercially - that bandwidth is shared between all the customers on one fibre, cable modem style. David That bandwidth is available per node of 32 customers. Each node has a separate shade of light to use with the same width as previously stated.
The CATV width is the same shade across every node for a lack of a better term. While every telephone and internet node gets access to the system the same way except in a different shade.
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"It's always funny until someone gets hurt......and then it's absolutely friggin' hysterical!" |
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DavidJWood
Premium
join:2001-10-12
UK
| said by BosstonesOwn :said by DavidJWood : 1.2Gbps downstream and 622Mbps upstream PON kit is available commercially - that bandwidth is shared between all the customers on one fibre, cable modem style. David That bandwidth is available per node of 32 customers. Each node has a separate shade of light to use with the same width as previously stated. Thanks for that further clarification. I was inexact in my terminology, in that I presumed each node stood alone from the next somehow, and was using the term "fibre" to describe was between each node and the subscribers.
Using different shades makes sense to me. This puts a figure on the bandwidth per customer that is possible with PON technology today in a Verizon style setup.
David |
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