In the method, a packet call controller establishes a bearer path between
the end point and the second network when a call transfer request
associated with the mobile station is received from a network providing
circuit switched communication. The call transfer request is triggered by
a circuit voice call origination from the mobile station that includes an
identifier that the packet call controller uses in recognizing that the
call transfer request requests transfer of a packet switched call to a
circuit switched call on the network.