Hi list i'm testing uac module with a did provider, apparently it works the first register, when it's going to refresh the session the register packed don't send the proxy-authorization header. My kamailio is 4.0, the debian wheezy repository *this is my parameter config:* #!ifdef WITH_UAC #---------- uac params ----------# modparam("uac", "reg_db_url",DBURL) modparam("uac", "reg_timer_interval",60) modparam("uac", "reg_retry_interval",120) modparam("uac", "reg_db_table", "uacreg") modparam("uac","credential","username:domain:password") modparam("uac","auth_realm_avp","$avp(i:10)") modparam("uac","auth_username_avp","$avp(i:11)") modparam("uac","auth_password_avp","$avp(i:12)") modparam("uac","restore_mode","auto") modparam("uac", "reg_contact_addr", "xx.xx.xx:5060") #!endif *this is the route block:* if(uac_reg_request_to("$fU", 1)) { xlog("L_NOTICE", "Found remote user [$rU] on [$rd] via [$du]"); t_on_failure("REMOTE_AUTH"); t_relay(); } * inside route[LOCATION] at the end:* #!ifdef WITH_UAC if(uac_reg_lookup("$rU", "$ru")) { xlog("request from a remote SIP provider [$ou => $ru]\n"); } lookup("location"); #!endif failure_route[REMOTE_AUTH] { if ($T_reply_code == 401 or $T_reply_code == 407) { xlog("L_NOTICE", "Remote asked for authentication"); uac_auth(); } } *this is the error log by syslog* ct 11 13:52:47 rene /usr/sbin/kamailio[7413]: INFO: <script>: Routing locally generated REGISTER to<sip:ippbx.xxxxx.com> Oct 11 13:52:47 rene /usr/sbin/kamailio[7400]: ERROR: uac [uac_reg.c:537]: uac_reg_tm_callback(): authentication failed for <2127207679> *this is sip trace with first register:* Frame 209: 671 bytes on wire (5368 bits), 671 bytes captured (5368 bits) on interface 0 Ethernet II, Src: Hewlett-_6b:6e:49 (10:1f:74:6b:6e:49), Dst: Cisco_7f:1e:69 (00:13:1a:7f:1e:69) Internet Protocol Version 4, Src: 10.20.8.45 (10.20.8.45), Dst: xx.xx.xx.xx (xx.xx.xx.xx) User Datagram Protocol, Src Port: sip (5060), Dst Port: sip (5060) Session Initiation Protocol Request-Line: REGISTER sip:ippbx.xxxxx.com SIP/2.0 Message Header Via: SIP/2.0/UDP 10.20.8.45;branch=z9hG4bKb278.906502e4.0 To: sip:5201341115@ippbx.xxxxx.com From: sip:5201341115@ippbx.xxxxx.com ;tag=533cb9e91f4b999cf76861cbb9ed54ed-4cad CSeq: 11 REGISTER Call-ID: 2e81fffd-7628(a)127.0.0.1 Max-Forwards: 70 Content-Length: 0 User-Agent: kamailio (4.0.3 (i386/linux)) Contact: <sip:01133212720@xxx.xxx.xxx:5060> Expires: 60 Proxy-Authorization: Digest username="1341115", realm="xxxxx", nonce="5DB4B614FCD76AD44FFFC3BEAECBDA9B", uri="sip:ippbx.xxxxx.com", response="d7d38055e339a2554cf2bb7e79e9b6f4", algorithm=MD5 *this is sip trace with the second register:* Frame 681: 468 bytes on wire (3744 bits), 468 bytes captured (3744 bits) on interface 0 Ethernet II, Src: Hewlett-_6b:6e:49 (10:1f:74:6b:6e:49), Dst: Cisco_7f:1e:69 (00:13:1a:7f:1e:69) Internet Protocol Version 4, Src: 10.20.8.45 (10.20.8.45), Dst: xx.xx.xx.xx (66.33.146.52) User Datagram Protocol, Src Port: sip (5060), Dst Port: sip (5060) Session Initiation Protocol Request-Line: REGISTER sip:ippbx.xxxxx.com SIP/2.0 Message Header Via: SIP/2.0/UDP 10.20.8.45;branch=z9hG4bKb278.a06502e4.0 To: sip:5201341115@ippbx.xxxxx.com From: sip:5201341115@ippbx.xxxxx.com ;tag=533cb9e91f4b999cf76861cbb9ed54ed-4d45 CSeq: 10 REGISTER Call-ID: 2e81fffe-7628(a)127.0.0.1 Max-Forwards: 70 Content-Length: 0 User-Agent: kamailio (4.0.3 (i386/linux)) Contact: <sip:01133212720@xxx.xxx.xxx:5060> Expires: 60 there isn't proxy-authorization Header Any help i don't know what it's wrong Best Regards Rene Montilva