"Following a combination of an underlying increase in network traffic as well as a high rate of new customer additions, we are aware of capacity issues in a small number of exchanges, " she said.

BBC: Sky logo

One of the underlying causes of the network's bad performance is the time taken to recover from routine failures, such as in signalling or track.

ECONOMIST: Railways: Anyone know how to run a railway? | The

CIOs are looking at network virtualization, not just VPNs, but also the opportunity to decouple network services from the underlying physical hardware.

FORBES: Three trends that change business: Mobile, Social and Cloud

Lewin tested his theories on the mini-network and tinkered continually with the formulas underlying it.

FORBES: Magazine Article

CenterPoint's network was engineered by ibm and runs on open-source software, meaning anybody can access the underlying code to develop new products to ride on the communications system CenterPoint is building.

FORBES: Magazine Article