Hi all, Two days ago, i had activated topoh module, and now in log file, when i receive a Options, appears this error /usr/sbin/kamailio[29936]: WARNING: topoh [th_msg.c:1063]: Invalid/Unparsed CSeq in message. Skipping. I dont' know solve it, only deactivating the topoh module!! Sorry for my english. ;) Regards. Javier Vidal