Quote:
Originally Posted by Sephiroth
So we are in agreement actually. What you say makes perfect sense to me. You're not on Reading by any chance? Is that 2100/525 homes passed per node or connected? If my RG41 5 postcode is anything to go by, that would be homes passed where I've calculated by survey between 500 & 600 homes passed.
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Homes passed. Nope I don't work in Reading. I Know how the Reading network is from a service tech perspective, because I've worked there when I was a service tech, but not sure from a Network Engineer perspective. But in my area on the original 2100 build, what you think is a fibre node cabinet may not necessarily be a fibre node, so without actual plans it would be hard to difficult to calculate exactly how many homes are passed.
---------- Post added at 14:48 ---------- Previous post was at 14:43 ----------
Quote:
Originally Posted by Ignitionnet
The fibre isn't a problem. The issues preventing additional downstream channels are either side. The capacity of line cards / Edge QAMs at the VM side and the RF capacity of node and amplifiers towards the customer.
WDM allows splitting of nodes without additional fibre, multiplexing nodes onto the same fibre pair, not delivery of more bandwidth to each node.
---------- Post added at 14:37 ---------- Previous post was at 14:30 ----------
So this is resegmentation, however rather than running new fibre all the way from hubsite or headend to each new node the existing fibre goes to a WDM mux colocated with the previous node, and new fibre is run from the original node only.
Removes the need for new long fibre runs; new fibre is only installed on that last few hundred feet in the field and however long in the hubsite/headend between the WDM mux and the Edge QAMs / digital return modulators / media converters / whatever.
Doesn't change how many channels each node can use unless the node's capabilities were the only bottleneck, but reduces homes passed per node.
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The first part of what you said was the point I was trying to get across. And yes you're correct In what you said in the second part. So the original node no has 2 CMTS ports rather than one, although this doesn't double the capacity as the ports aren't evenly split as such, but it does mean the amp feeding the most customers will have the extra capacity. And obviously going forward more wavelengths can be used to reseg that node even further