[SR-Users] BLF using kamailio

Hi, I have implemented kamailio with asterisk, I want to enable BLF using kamailio instead of asterisk. I would appreciate any kind of help, below I'm pasting my configuration. *I'm testing with an Aastra phone, when phone sends the subscription kamailio answers with:* U 192.168.15.22:5060 -> 192.168.15.108:5060 SIP/2.0 489 Bad Event. Via: SIP/2.0/UDP 192.168.15.108;branch=z9hG4bKa54a155ad67706dca. From: "1104" <sip:1104@192.168.15.22:5060>;tag=71cf5c9949. To: <sip:1104@192.168.15.22:5060>;tag=99b712eabe88b2bf7a20409f3dc7ebf1-f71b. Call-ID: f22823b8b4d58a8e. CSeq: 3430 SUBSCRIBE. Allow-Events: presence.winfo, presence, dialog. Server: kamailio (3.1.3 (i386/linux)). Content-Length: 0. *This is my presence configuration:* #!ifdef WITH_PRESENCE loadmodule "presence.so" loadmodule "presence_dialoginfo.so" loadmodule "presence_xml.so" #!endif #!ifdef WITH_PRESENCE # ----- presence params ----- modparam("presence", "db_url", DBURL) modparam("presence", "server_address", "sip:192.168.15.22:5060") modparam("presence_dialoginfo", "force_single_dialog", 1) # ----- presence_xml params ----- modparam("presence_xml", "db_url", DBURL) modparam("presence_xml", "force_active", 1) #!endif