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tbeckner
join:2004-03-20
Bend, OR
1 edit | Re: Don't you think Verizon is few years late? 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. | |
|  DavidJWood
Premium
join:2001-10-12
UK
| Re: Don't you think Verizon is few years late? 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 | |
| | BosstonesOwn
join:2002-12-15
Everett, MA
clubs:
 ·Comcast
| Re: Don't you think Verizon is few years late? 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!" | |
| | | DavidJWood
Premium
join:2001-10-12
UK
| Re: Don't you think Verizon is few years late? 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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