[OpenSER-Users-ES] Problemas de Autentificación

A ver si alguien me puede ayudar con ésto, no encuentro solución. Tel UA está cerrado y no lo puedo configurar. El user/pass/realm está bien en el openser, aquí un trace OPENSER: 3(29410) SIP Request: 3(29410) method: <REGISTER> 3(29410) uri: <sip:my.domain.com> 3(29410) version: <SIP/2.0> 3(29410) parse_headers: flags=2 3(29410) Found param type 235, <rport> = <n/a>; state=6 3(29410) Found param type 232, <branch> = <z9hG4bK30055>; state=16 3(29410) end of header reached, state=5 3(29410) parse_headers: Via found, flags=2 3(29410) parse_headers: this is the first via 3(29410) After parse_msg... 3(29410) preparing to run routing scripts... 3(29410) parse_headers: flags=100 3(29410) DEBUG:parse_to:end of header reached, state=10 3(29410) DBUG:parse_to: display={}, ruri={sip:123456@my.domain.com} 3(29410) DEBUG: get_hdr_field: <To> [29]; uri=[sip:123456@my.domain.com] 3(29410) DEBUG: to body [<sip:123456@my.domain.com> ] 3(29410) get_hdr_field: cseq <CSeq>: <1> <REGISTER> 3(29410) DEBUG:maxfwd:is_maxfwd_present: value = 70 3(29410) parse_headers: flags=200 3(29410) DEBUG: get_hdr_body : content_length=0 3(29410) found end of header 3(29410) find_first_route: No Route headers found 3(29410) loose_route: There is no Route HF 3(29410) New Registration 3(29410) parse_headers: flags=4000 3(29410) pre_auth(): Credentials with given realm not found 3(29410) parse_headers: flags=14000 3(29410) xl_get_authattr: Error while parsing headers 3(29410) Registration FAILED! CLIENT: 3(29410) build_auth_hf(): 'WWW-Authenticate: Digest realm="my.domain.com", nonce="478bd983f7e6d37c2be680092b6ce99fa0fb5c56" ' 3(29410) parse_headers: flags=ffffffffffffffff 3(29410) check_via_address(1.2.3.4.5, 192.168.1.94, 0) 3(29410) DEBUG:destroy_avp_list: destroying list 0x77bf2e80 3(29410) receive_msg: cleaning up Un trace tshark: Session Initiation Protocol Request-Line: REGISTER sip:sip99.yip.com SIP/2.0 Method: REGISTER [Resent Packet: False] Message Header Via: SIP/2.0/UDP 192.168.1.94:3060;rport;branch=z9hG4bK8843 Transport: UDP Sent-by Address: 192.168.1.94 Sent-by port: 3060 RPort: rport Branch: z9hG4bK8843 From: <sip:123456@my.domain.com>;tag=23419 SIP from address: sip:123456@my.domain.com SIP tag: 23419 To: <sip:123456@my.domain.com> SIP to address: sip:123456@my.domain.com Call-ID: 28466(a)192.168.1.94 CSeq: 1 REGISTER Sequence Number: 1 Method: REGISTER Contact: <sip:123456@192.168.1.94:3060> Contact Binding: <sip:123456@192.168.1.94:3060> URI: <sip:123456@192.168.1.94:3060> SIP contact address: sip:123456@192.168.1.94:3060 Max-Forwards: 70 User-Agent: Koncept KU2000 3.1.4.781 Expires: 3600 Content-Length: 0 Me da siempre UNAUTHORIZED. gracias.