[Users] TM : retransmission timers

Hello, I made strange observations about the intervals between retransmissions with the TM module. In my experiments, I used the default parameters for the TM module timers, and I sent an INVITE that cannot receive answers (it has a well known R-URI pattern that is forwarded to a place and port that nobody listen). When reading RFC3261, I expected to see intervals between retransmissions of |500ms|1s|2s|4s|8s|16s|. 7 transmissions, during 32s. But with OpenSER, (I have tested with the debian package 1.1.0-5 on a debian etch, and the cvs sources for 1.1.0 or 1.0.1compiled by myself), I can see intervals like <500ms, 2s, 4s, 4s,4s, ... until 26s are spent (9 sendings). The first interval is sometomes very short (40ms). Altough I like the sequence of 4s separated transmissions, I do not know why the first interval is so short, and why there is no sending after 1s. Did anybody observed such behaviours? Are they normal? Thanks in advance! JF Smigielski. ________________________________________________________________________ iBELGIQUE, exprimez-vous ! http://web.ibelgique.com/