Hi,
Don't know what expecting from redis but no error message for redis-server
I also noticed a kamailio error message related to this : Mar 27 09:19:09 tcossbcsfr3 /usr/sbin/kamailio[5246]: ERROR: {1 1 UPDATE e806c441901b4f16a2c74df5a379f973} uac [replace.c:660]: restore_uri(): new URI [] shorter than old URI [sip:+33XXXXXXXXX@TSFR.SBC.SFR.NETTSFR.SBC.SFR.NET]
maybe because I have to remove a prefix before forwarding the INVITE to PSTN ($rU and $tU)...dont know if it's related to