[sr-dev] Distinguish between local 408 generated after "fr_inv_timer" and "fr_timer"

[Juha Heinanen]

I aki Baz Castillo writes:

 > - Create a custom SIP status code (i.e. 498) which means "fr_timer
 > expiration", this is: no provisional (neither final) response has been
 > receiving within "fr_timer" seconds (typically 5-10 seconds).

i simple set a flag if provisional reply has been received.

-- juha