A method and system for billing remote calls includes the provisioning of
an active terminating attempt trigger on a subscriber's primary line. To
make a long-distance call from a remote location, the subscriber calls a
service control node and provides a destination calling line number and
the subscriber's primary line number (e.g., home telephone number). The
SCN assembles the data into a string and includes a feature access code.
This string is transmitted to a switch that recognizes the feature access
code and transmits a message to a service control point. The service
control point also recognizes the feature access code and reassembles the
message into a call structure containing the primary line number, the
destination line number, and a code indicating that the message should be
reassembled. This message is transmitted back to the switch which then
routes the call to the primary line switch where the trigger is
encountered. The primary line switch then transmits the call information
up to an SCP and includes the code. The SCP detects the code and
reassembles the data to instruct the switch to route the call to the
destination number through the primary line number. The switch routes the
call to the destination number and the primary line number is billed for
the call.
