How is the TCAP router aware that the primary app has died?

• TCMG notifies the TCAP router on reception of a TAP_UNBIND. Then, the routing tables of the router are reworked.
• If the app is started manually + Ft Attach, POP needs 10 seconds by default to notice that the application is dead. This is immediate if the app is started by POP. Then POP sends a SIGCPT to TAP, which sends a TAP_UNBIND to TCMG.
• The 10 seconds delay can be changed via the -HCtimer option of POP.