The NextiraOne Contact Centre at Chelsea, which is based on Alcatel-Lucent technology, handles phone enquiries for the box office and deals with many thousands of ticket requests for each game.
All customer service enquiries go via the centre on a daily basis, and this is also the central telephone information point for supporters on busy match days.
The club also provides an auto-attendant contact centre, which routes all calls for the megastore, meetings and events, hospitality requests and the rest of the Chelsea business areas.
The system handles over 700 extensions at Chelsea's three sites: the football stadium and management offices at Stamford Bridge the training ground in Cobham which houses the medical, coaching and football management team and the youth academy and Football in the Community departments.
Elaine Clark, head of IT at Chelsea FC, said, "We need the peace of mind that NextiraOne will be on hand if anything goes wrong with our system, especially on match days and at other busy times. NextiraOne built the system and has given us excellent service so far and it made sense for us to continue with a service that is running so smoothly."