[SR-Users] Example kamailio.cfg t_check_trans()

Phil Lavin phil.lavin at synety.com
Thu Dec 31 12:39:43 CET 2015

Hi there,

The example config that Kamailio ships with contains this block of code in request_route:

# handle retransmissions
if(t_precheck_trans()) {

I am not fully understanding the requirement for either of the t_check_trans() here. As far as I can see from the documentation, t_check_trans() returns a boolean value and does not modify any data internally.

Can anyone help me find out what the relevance of the t_check_trans() calls is?


Phil Lavin
Systems Engineer
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