fyi (in response to a frequently asked question "how to get snom's buggy RR-ing working along with PRACK). I just tried to create a workaournd to the problem (which is PRACK does not put Routes learned in 183). It's as easy as mangling SIP messages not to advertise their support for "100rel": if (method=="INVITE" && search("User-Agent: snom")) { #replace("PRACK, ", ""); replace("100rel, ", ""); }; -jiri -- Jiri Kuthan http://iptel.org/~jiri/