hello,

I use Kamailio as my Icscf in IMS network .

after receiving Invite Request from SCSCF to ICSCF‌, a LIR request sent from ICSCF to FHoss. User_Unknown response received in all states. I checked every thing carefully , users are registered and  defined in HSS and every configuration done . What's wrong? is it possible that icscf has problem? or it can be FHoss bug?