RE: [EFM] EFM Requirements
Geoff,
Whether the truck roll is required may be a big deal. Given the current
cable modem costs, the service call expense may be too dear.
There
is nothing that prevents a self installable ONU box from providing a network
demark function. The ONU can act as a managed network element reachable from the
provider network, while offering a layer 2 data forwarding function to the
subscriber only.
Harry
At 04:50 PM 8/13/01 -0400, Sherman Ackley
wrote:
Q3. (a) For DSL/EFM to succeed in the
marketplace, it is necessary that a
technician does not have to be
dispatched to the home to install a splitter.
(b) In a splitterless
environment, the network signal and the HomePNA signal
will ride the same
cable pair in the house. That makes coexistence a
necessity.
The reason for this is that pair one will appear in every jack,
but pair
two may be cut off in the majority of
homes.
Sherm-
I do not agree.
Our discussion
to date have pretty well driven us to the conclusion that there will have to
be a piece of demarcationir equipment that will isolate the line, at least in
the frequency range above voice.
Whether this box requires a truck roll
or can be purchased by the consumer and self-installed is pretty much beside
the point. The box will have to provide the demarcation function and have
functionality (if not hardware) that is owned by the service provider in order
to meet their OA&M requirements.
Further, we can not expect Service
Providers who are operating at the Nyquist limit to be willing to coexist with
and guarantee service in an environment with every piece of uncontrolled hobby
gear that a homeowner has a right to plug into a phone jack.
I predict
that isolation and demarcation will not be optional.
Geoff
Thompson/Nortel