BT selected Ciena as a preferred supplier to support its 21st Century Network (21CN), a five-year project to transform BT's business and enable the cost-effective delivery of next-generation converged, multimedia communications across a single multiservice network. Ciena continues to make progress with BT on its 21CN build-out, deploying Ciena's CN 4200™ FlexSelect™ Advanced Services Platform, CoreDirector® Multiservice Switch and CoreStream® Agility Optical Transmission System.

Ciena’s products form the transmission domain of 21CN, and more than 500 Ciena network elements have been installed to date to connect network nodes in every major city in England, Scotland and Wales. 

In addition to the 21CN roll-out in the UK, Ciena’s CN 4200 platform is being deployed to support BT’s 21CN Global platform.  Projects are currently underway across multiple markets around the world to support BT’s global transition to an innovative, next-generation network architecture