 In 2015, AT&T did not renew a support contract with Alcatel-Lucent (now Nokia) for the 1AESS systems still in operation and notified Alcatel-Lucent of its intent to remove them all from service by 2017.As a result, Alcatel-Lucent dismantled the last 1AESS lab at the Naperville Bell Labs location in 2015, and announced the discontinuation of support for the 1AESS.In 2017, AT&T completed the removal of remaining 1AESS systems by moving customers to other newer technology switches, typically with Genband switches with TDM trunking only.