On Thursday 29 May 2014 20:05:56 Luis F Urrea wrote: Never trust anything a device sends to kamailio :) If you are using a config close to default your problem is in route[NATDETECT] if (nat_uac_test("19")) { if (is_method("REGISTER")) { fix_nated_register(); } else { add_contact_alias(); } http://www.kamailio.org/docs/modules/stable/modules/nathelper.html#idp18067… ========================= 5.4. fix_nated_register() The function creates a URI consisting of the source IP, port, and protocol and stores the URI in an Attribute-Value-Pair. The URI will be appended as "received" parameter to Contact in 200 OK and registrar will store it in the received cloumn in the location table. Note: You have to set the received_avp parameter of the nathelper module and the registrar module (both module parameters must have the same value) to use this function. This function can be used from REQUEST_ROUTE. ========================= If that brings no relief take a look at the third argument for save http://www.kamailio.org/docs/modules/stable/modules/registrar.html#idp19750… If you can construct a correct URI supply it to save. -- POCOS B.V. - Croy 9c - 5653 LC Eindhoven Telefoon: 040 293 8661 - Fax: 040 293 8658 http://www.pocos.nl/ - http://www.sipo.nl/ K.v.K. Eindhoven 17097024