A method for call connection is provided. The method includes: controlling the switching device to establish the link with the queuing machine according to the received trigger service request; controlling the queuing machine to inquire the number of destination user through the link; controlling the queuing machine to tear down the link; controlling the switching device to connect to the number of destination user. A system, a service control device, a switching device and a queuing machine for call connection are also provided. The problem of link circuity of the queuing machine in the voice value-added service call is resolved.