Procedure in Case of Service PIC Failure

If a service PIC fails, the following procedure takes place:

Active calls are lost.
The PG notifies the PGC of the failure using an FO/904 ServiceChange message.
The PG receives an acknowledgment for the FO/904 message from the PGC.
The redundant service PIC (rsp) mechanism allocates the secondary PIC and makes the secondary PIC the new primary PIC.
The new primary PIC establishes the IPC connection to the PGCP process on the routing engine.
The PGCP process issues an RS/902 registration message to the PGC.
The PGCP process receives an acknowledgment of the registration message from the PGC.
The PG is ready to accept and process new H.248 commands.