Method and apparatus for setting up a call over a packet-based transport network

摘要

A method comprises the steps of directing a call intended for a mobile ( 531 ) to a virtual tandem switch ( 501 ). The virtual tandem switch ( 501 ), which may include multiple converters ( 505 and 507 ) queries a home location register to obtain call information for the mobile ( 531 ). The call to the mobile ( 531 ) is set up over a packet-based transport network ( 523 ).