The errors were: Not starting : invalid configuration file! 0(4264) : <core> [cfg.y:3412]: parse error in config file //etc/kamailio/kamailio.cfg, line 453, column 50: unknown command, missing loadmodule? 0(4264) : <core> [cfg.y:3412]: parse error in config file //etc/kamailio/kamailio.cfg, line 453, column 67: syntax error 0(4264) : <core> [cfg.y:3412]: parse error in config file //etc/kamailio/kamailio.cfg, line 453, column 82: bad expression 0(4264) : <core> [cfg.y:3412]: parse error in config file //etc/kamailio/kamailio.cfg, line 453, column 82: bad command 0(4264) : <core> [cfg.y:3412]: parse error in config file //etc/kamailio/kamailio.cfg, line 454, column 2: bad command 0(4264) : <core> [cfg.y:3412]: parse error in config file //etc/kamailio/kamailio.cfg, line 461, column 7: syntax error 0(4264) : <core> [cfg.y:3412]: parse error in config file //etc/kamailio/kamailio.cfg, line 461, column 7: invalid route statement 0(4264) : <core> [cfg.y:3409]: parse error in config file //etc/kamailio/kamailio.cfg, line 461, column 8-11: ERROR: bad config file (8 errors) After modifying as below, there were no errors and kamailio.log is now showing the xlog event. Checking now into pcap to 100% verify the 200, ok if ( is_method("NOTIFY") && uri==myself && $hdr(Event) =~ "keep-alive" ) { sl_send_reply("200", "OK - keepalive"); xlog("L_INFO", "$hdr(Event) detected - ok sent\n"); exit; } From: sr-users-bounces(a)lists.sip-router.org [mailto:sr-users-bounces@lists.sip-router.org] On Behalf Of Alex Balashov Sent: Saturday, May 21, 2011 8:09 PM To: SIP Router - Kamailio (OpenSER) and SIP Express Router (SER) -Users Mailing List Subject: Re: [SR-Users] syntax error? What is the exact syntax error you are being given? -- Alex Balashov - Principal Evariste Systems LLC 260 Peachtree Street NW Suite 2200 Atlanta, GA 30303 Tel: +1-678-954-0670 Fax: +1-404-961-1892 Web: http://www.evaristesys.com/ On May 21, 2011, at 10:40 PM, "Skyler" &lt;skchopperguy(a)gmail.com&gt; wrote: Hi all, I am attempting to handle NOTIFY within my script but there is a definite error in my syntax. I believe it has to do with $hdr(Event). Anyone know how I should re-write this? if (is_method("NOTIFY") && is_domain_local("$rd") && $hdr(Event) =~ "keep-alive" ) { sl_send_reply("200", "OK - keep-alive"); exit; } TIA _______________________________________________ SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-users(a)lists.sip-router.org http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users _____ No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1375 / Virus Database: 1509/3652 - Release Date: 05/21/11