Hi Daniel, Thanks for the reply. Yes, the use case would be something like this. But as I see in the module codes, it is just checking special AUIDs that 'simservs' is not in that list. I haven't tried to test it yet because of the UE Xcap root URI setting issue, but if you think those checks don't make any issue for saving/fetching, I will do a test. Regards,Hossein On Wednesday, August 4, 2021, 03:52:46 AM PDT, Daniel-Constantin Mierla <miconda(a)gmail.com> wrote: Hello, is anything special required for this auid? Or just store the xcap document and serve it, in such case it may just work. Cheers, Daniel On 04.08.21 00:41, H Yavari wrote: Hi to all, As I found there isn't any support for this AUID :  simservs.ngn.etsi.org in Kamailio. Anyone can confirm that we can't use Kamailio as mmtel for IMS with the current xcap_server module?!! Thank you. Regards, Hossein __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions * sr-users(a)lists.kamailio.org Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe: * https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users -- Daniel-Constantin Mierla -- www.asipto.com www.twitter.com/miconda -- www.linkedin.com/in/miconda