On Wed, 30 Aug 2006, Paul wrote:

On 28 Aug 2006 11:21:48 -0700, "Boltar"
wrote:

Steve Fitzgerald wrote:

I don't think you can blame LUL on this as it's being led by the
companies put in to manage the infrastructure under the PPP. LUL get
what they are given as long as it meets the specification.

Surely LUL have the final say? Or do the infracos have cart blanche to
do what the please? Seems a bit crazy to have 2 different types of new
ATO signalling on the system.

Nope. Provided the Infracos comply with LUs standards - which define
functionality not a particular supplier - they are free to go with
different suppliers

PC manufacturers are free to go with different suppliers, and yet
different brands of PCs seem to be remarkably compatible. Why can't the LU
requirements include a detailed technical specification, and require
compatibility with it? After all, they don't let each infraco use whatever
track gauge or traction voltage they feel like, do they? That wouldn't
affect supplier choice - an infraco could buy the gear from anyone, as
long as it complied with the standard.

tom

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