Ahh, right! Thanks! Are these the only timers which can be overridden in FS? -----Original Message----- From: freeswitch-users-bounces@lists.freeswitch.org [mailto:freeswitch-users-bounces@lists.freeswitch.org] On Behalf Of Alex Balashov Sent: Wednesday, December 18, 2013 12:01 PM To: freeswitch-users@lists.freeswitch.org Subject: Re: [Freeswitch-users] overriding default timer values Yes. You can see these options in the stock SIP profile configuration XML: 1) <!-- Initial retransmission interval (in milliseconds). Set the T1 retransmission interval used by the SIP transaction engine. The T1 is the initial duration used by request retransmission timers A and E (UDP) as well as response retransmission timer G. --> <!-- <param name="timer-T1" value="500" /> --> 2) <!-- Transaction timeout (defaults to T1 * 64). Set the T1x64 timeout value used by the SIP transaction engine. The T1x64 is duration used for timers B, F, H, and J (UDP) by the SIP transaction engine. The timeout value T1x64 can be adjusted separately from the initial retransmission interval T1. --> <!-- <param name="timer-T1X64" value="32000" /> --> 3) <!-- Maximum retransmission interval (in milliseconds). Set the maximum retransmission interval used by the SIP transaction engine. The T2 is the maximum duration used for the timers E (UDP) and G by the SIP transaction engine. Note that the timer A is not capped by T2. Retransmission interval of INVITE requests grows exponentially until the timer B fires. --> <!-- <param name="timer-T2" value="4000" /> --> 4) <!-- Transaction lifetime (in milliseconds). Set the lifetime for completed transactions used by the SIP transaction engine. A completed transaction is kept around for the duration of T4 in order to catch late responses. The T4 is the maximum duration for the messages to stay in the network and the duration of SIP timer K. --> <!-- <param name="timer-T4" value="4000" /> --> -- Alex