i would like to have an fr_inv_timer functionality on inbound INVITEs.

the only way i imagine this to work is to use timer module, set a predefined timer value, and when reaching that value after the INVITE, execute a ROUTE that 

cancels the callee and sends a 500 or timeout message back to the caller.

problem is, the timeout value for module is static. i need the timeout to be dynamic

for different callers.

are there any other methods on achieving this?

Kelvin Chua

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