The timer T310 is the one. Because calls to mobile phones take longer to connect (also some time international calls), T310 timer will expire.
This timer is initiated when Call Proceeding is received and stopped when Alert, Connect, Disc or Progress is received.
You can set it to 60 seconds (is 40 from default i think...).
This is the time between your last dialed digit and the ring heard in the head set
Anyway - if receive the Recovery on Timer Expiry message earlyer than 40 seconds (with the default config) - means that another equipment on the international network is disconnecting because of the same reason - usually the far end equipment....
cheers
Robert
