Re: leviton vizia RF switches (Z-wave)

["Robert L Bass" <no-sales-spam@bassburglaralarms>]

>> I also wonder how how it determines which
>> of many possible routes is best...
>
> The answer to your question lies in a Z-Wave
> White Paper...

Hmm.  That was rude.  Pardon me.  I'll post the
answer below:

"The Z-Wave installation process is very
flexible enabling both local and central installation."

"The local installation is ideal for small low
cost systems (e.g. 5 light remotes + 30 lamp
modules), which are installed by the homeowner
or an installer. The basic philosophy of the
Z-Wave local installation process is that the
user activates both the node and the controller
in order to install the new product. The activation
can be simultaneous or skewed and it can be
initiated once or for all new nodes depending on
the installation scenario. The new product sends
out a request to join the network, which is
acknowledged by a controller by assigning an
ID to the node. Finally the new node reports
back its neighbour list (nodes within direct RF
range) to the controller enabling it to have full
network topology information."

"The central installation is ideal for complex
home control Systems with many different
products and applications, and which are
installed by a professional. The basic
philosophy of the Z-Wave Central Installation
process is that the Z-Wave technology
enables any controller in the system to include
new products to the system in coordination
with the Z-Wave SIS node. The SIS is typically
implemented in a PC or equivalent intelligent
device, allowing the installer to have full remote
control and monitoring over all steps in the
process."

"Zero management of the mesh network --
The central challenge in network management
is the fact that the homeowner generally does not
fully comprehend that the product he has installed
is a part of mesh network. It is therefore important
that there is no need for network management in
the typical installation. The mesh network must be
self-organizing and self-healing."

"Self-organizing --
In a self-organizing network, nodes are capable
of discovering their neighbours and distributing
this information to others automatically. In a
self healing network, nodes are capable of
redirecting traffic if parts of the mesh are down."

"In Z-Wave every node discovers its neighbours
when they are included in the network or upon
request. This information is automatically be
forwarded to the Static Update Controller (SUC)
in the system. The SUC is always ?listening?,
allowing other nodes to receive/request topology
information."

"In a self-organizing mesh network the user does
not need to consider whether all nodes in the
house can communicate directly with each other
or whether they need a router along the way.
The routing protocol in the mesh ensures that all
destination nodes can be reached from any
initiator node."

Mr. Houston might want to reread the preceeding
paragraph again before declaring that another
poster doesn't understand the way Z-Wave
works.  As I said, a module at one edge of the
network does not need to talk to one at the other
edge.

--

Regards,
Robert L Bass

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Bass Home Electronics
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4883 Fallcrest Circle
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