US Patent 11489887 System for providing contact center services in integrated way

Disclosed is a system for providing contact center services in an integrated way, in which a client can receive query processing services by immediately connecting to at least one of other contact center servers operated by service providers cooperating in a link service by a call transfer without changing a preexisting connection state while being initially connected to a specific contact center server, so that a user can use a plurality of query processing services without difficulties by linking the contact center servers operated by the plurality of service providers, thereby minimizing the time, efforts and costs of the user who wants to receive the plurality of query processing services through the plurality of service providers.