pon's and ethernet to the home

Rubens Kuhl Jr. rubens at email.com
Thu Dec 18 20:33:39 UTC 2003


> Having heard no answer, I will take a shot :
>
> I actually think that EPONs have a good chance to be the future method
> of distributing video from the "cable" provider to the home. As they
> are passive, it minimizes the amount of equipment out there. A

May be not... all xPON systems have a wavelength window reserved for DWDM
broadcast, that seems more suited to the task.

> 10-Gigabit Ethernet running multicast IP (probably with some form of
> packet tagging like MPLS) could more than support all of the video and
> data needs of a typical cable head-end customer base.

EPON/IEEE 802.3ah is a 1-Gigabit system (actually a 1.25 Gbps but 20% is
used by the 8B10B encoding); I haven't seen any spec for a 10-Gig PON; even
recently standardized GPON is limited to 2.5 Gbps downlink, 1.25 Gbps
uplink.


> You might look at alloptic as a equipment provider here
> http://www.alloptic.com/

Or
http://www.alcatel.com/fttu
http://www.flexlight-networks.com/
http://www.broadlight.com
http://www.teknovus.com


Rubens





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