The new centre will create 300 jobs in the first instance, and a further 200 jobs in the future will have a significant impact on the town.
Regional development agency One North East, has given a grant of £1.9m for the project.
Firstsource, one of the UK’s main investors and according to the FT FDI Index, already has three UK contact centres employing over 1,900 people between Belfast and Londonberry.