[Sep  7 15:58:42] NOTICE[5902]: res_pjsip/pjsip_distributor.c:525 log_failed_request: Request 'OPTIONS' from '<sip:opensips-ac@webvoice.g9sa.pt>' failed for '212.13.38.130:5060' (callid: a046f017-3092c751-5fe2@212.13.38.130) - No matching endpoint found
<--- Transmitting SIP response (454 bytes) to UDP:212.13.38.130:5060 --->
SIP/2.0 401 Unauthorized
Via: SIP/2.0/UDP 212.13.38.130:5060;rport=5060;received=212.13.38.130;branch=0
Call-ID: a046f017-3092c751-5fe2@212.13.38.130
From: <sip:opensips-ac@webvoice.g9sa.pt>;tag=8307d193
To: <sip:My_IP_ADDR>;tag=0
CSeq: 1 OPTIONS
WWW-Authenticate: Digest  realm="asterisk",nonce="1473260322/0ec0bc853a5e70fac812f3beb819738e",opaque="304e7d7e4f1f4fe0",algorithm=md5,qop="auth"
Server: Asterisk PBX 13.11.0
Content-Length:  0

[G9Telecom-trunk]
type = registration
transport = transport-udp-nat
outbound_auth = g9-auth
server_uri = sip:webvoice.g9sa.pt
client_uri = sip:MY-LOGIN@webvoice.g9sa.pt
retry_interval = 60

[g9-auth]
type = auth
auth_type = userpass
username = MY-LOGIN
password = My-PASS

[g9]
type=endpoint
transport = transport-udp-nat
context = parsis
allow = !all,ulaw
outbound_auth = g9-auth
aors = g9-aor
direct_media = no

[g9-aor]
type = aor
contact = sip:webvoice.g9telecom.pt

[g9-identify]
type=identify
endpoint = g9