BT's 21CN Test Programme Enters Next Stage

BT's trial 21st Century Network (21CN) is currently handling more than 625,000 live customer calls per day and more than 23 million customer calls have been completed. The trial involves the use of an IP link to carry voice calls between two major network nodes at Cambridge and Woolwich.



BT said the success of its trial represents a significant step towards the creation of its next generation network. It builds on the previous trial which ran from October to December 2005 where fourteen million calls were successfully carried on the IP network and voice quality monitoring carried out.



Multi service access nodes or MSANs from Huawei and Fujitsu are already in use, carrying voice services onto the core network from trial customer lines. This equipment is being installed at 18 exchanges in South East London, Kent and East Anglia.



For this stage of the trial, BT has also newly introduced Cisco's media gateway; Ericsson's call server and a Cisco Catalyst Switch. Other key technology components are Alcatel's LAN switch and Siemens/Juniper routers used in a previous 21CN voice trial.



Deb Covey, managing director, BT Wholesale Networks said: "21CN is gathering momentum as we head towards the start of customer lines being switched to the new network in South Wales in November. We are working with the rest of the industry to finalise the UK rollout plan. It's full steam ahead as we prepare sites across the country for equipment to be installed this summer."http://www.btplc.com