On 6 January 2014 14:20, Charlie Boisseau <[email protected]> wrote:

>  Surely if BT were genuinely in the DC (i.e. they have a WDM capability
> in the building), then they don’t need to buy tails from anyone.
>

It's because the service you're buying isn't a one-off wave, it's the
platform for providing multiple (wave-based) services.

I don't know if it makes sense - technically, obviously there are many ways
of providing service, many of which would be more convenient for the
customer.  On the other hand, commercially BT seem to have done all right
with their approach.  They've sold plenty so customers must be OK with it.

We've had this debate since forever - it was the same with SDH circuits
back in the day - you had to accommodate an SDH shelf, PSU and batteries in
your rack in Telehouse to get a single E1 from BT whereas other operators
would simply run you a coax pair from their suite.

Aled

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