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/* Watchdog. I have seen situations when remote fax disconnects
(because of poor line
   quality) while SpanDSP continues staying in T30_STATE_IV_CTC state forever.
   To avoid this, we terminate when we see that T30 state does not
change for 5 minutes.
   We also terminate application when more than 30 minutes passed regardless of
   state changes. This is just a precaution measure - no fax should
take that long */

#define WATCHDOG_TOTAL_TIMEOUT	30 * 60
#define WATCHDOG_STATE_TIMEOUT	5 * 60

Kristijan