Re: [802.3_EXTND_EPON] Loop lengths
Sorry, I'm not in the room, so I'm looking at it from a purely
theoretical basis.
Given the geography doesn't change (i.e. the houses stay in one place),
such an effect may come from a higher fill rate. Unless the point of
presence is very badly placed, geometry will dictate that the average
length will shorten as the fill rate increases - with no change to the
min or max.
Hugh.
-----Original Message-----
From: Victor Blake [mailto:victorblake@xxxxxxxxxxxxxxx]
Sent: Wednesday, November 09, 2011 12:27 PM
To: STDS-802-3-EXTND-EPON@xxxxxxxxxxxxxxxxx
Subject: Re: [802.3_EXTND_EPON] Loop lengths
Glen, et. al.
Although loop length may be shorter on average, the maximum loop lengths
hasn't changed much. One way to look at it is that the distribution of
loop
lengths is such that, when viewed as a probability distribution as shown
in
the PPT, the curve is flattened. Stated another way, the average may be
shorter, but the min, max, and median are about the same.
-Victor
-----Original Message-----
From: Glen Kramer [mailto:gkramer@xxxxxxxxxxxx]
Sent: Wednesday, November 09, 2011 2:25 PM
To: STDS-802-3-EXTND-EPON@xxxxxxxxxxxxxxxxx
Subject: [802.3_EXTND_EPON] Loop lengths
Following up on the discussion at the meeting right now, here is an old
presentation from Verizon that showed their copper loop lengths. I don't
know if distribution of subscribers has changed significantly. Between
1983
and 1990, the loop lengths appear to shorten.
http://www.ieee802.org/3/efm/public/sep01/brown_1_0901.pdf (see slide
24)
Glen