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

Hi there, The example config that Kamailio ships with contains this block of code in request_route: # handle retransmissions if(t_precheck_trans()) { t_check_trans(); exit; } t_check_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? Thanks Phil Lavin Systems Engineer CloudCall by SYNETY www.cloudcall.com<http://www.cloudcall.com> T: +44 (0) 330 335 0000 / +1 617 982 1600 D: +44 (0) 116 424 4790 / +1 617 982 4790 SM: LinkedIn<https://uk.linkedin.com/pub/phil-lavin/25/422/750> READ OUR BLOG FOR SMARTER COMMUNICATIONS<http://t.sidekickopen03.com/e1t/c/5/f18dQhb0S7lC8dDMPbW2n… Confidentiality: This e-mail transmission, including any attachments, is intended only for the named recipient(s) and may contain information that is privileged, confidential and/or exempt from disclosure under applicable law. If you have received this transmission in error, or are not the named recipient(s), please notify the sender immediately by return e-mail and permanently delete this transmission, including any attachments. Security: This e-mail and any attachments are believed to be free from any virus but it is the responsibility of the recipient to ensure this is so. E-mail is not a 100% secure communication.