irvoice004*CLI> channel originate SIP/411115/15571917 application Playback beep
  == Using SIP RTP CoS mark 5
Audio is at 17816
Adding codec 100004 (alaw) to SDP
Adding codec 100003 (ulaw) to SDP
Adding non-codec 0x1 (telephone-event) to SDP
Reliably Transmitting (NAT) to 192.168.0.10:5060:
INVITE sip:15571917@192.168.0.10 SIP/2.0
Via: SIP/2.0/UDP 192.168.0.19:5060;branch=z9hG4bK14d2ba04;rport
Max-Forwards: 70
From: "Anonymous" <sip:411115@anonymous.invalid>;tag=as1d444787
To: <sip:15571917@192.168.0.10>
Contact: <sip:411115@192.168.0.19:5060>
Call-ID: 31beab764ede04f67a5534a02ccd6627@192.168.0.19:5060
CSeq: 102 INVITE
User-Agent: InfoMek
Date: Tue, 18 Jun 2013 15:08:39 GMT
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH
Supported: replaces, timer
Content-Type: application/sdp
Content-Length: 257

v=0
o=root 932548727 932548727 IN IP4 192.168.0.19
s=Asterisk PBX 11.2.1
c=IN IP4 192.168.0.19
t=0 0
m=audio 17816 RTP/AVP 8 0 101
a=rtpmap:8 PCMA/8000
a=rtpmap:0 PCMU/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=ptime:20
a=sendrecv

---

<--- SIP read from UDP:192.168.0.10:5060 --->
SIP/2.0 407 Proxy Authentication Required
Via: SIP/2.0/UDP 192.168.0.19:5060;branch=z9hG4bK14d2ba04;received=192.168.0.19;rport=5060
From: "Anonymous" <sip:411115@anonymous.invalid>;tag=as1d444787
To: <sip:15571917@192.168.0.10>;tag=as1683a51b
Call-ID: 31beab764ede04f67a5534a02ccd6627@192.168.0.19:5060
CSeq: 102 INVITE
User-Agent: SUNSIP - Tecnored S.A.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
Supported: replaces
Proxy-Authenticate: Digest algorithm=MD5, realm="sip.riotel.com.ar", nonce="509b1e0d"
Content-Length: 0

<------------->
--- (11 headers 0 lines) ---
Transmitting (NAT) to 192.168.0.10:5060:
ACK sip:15571917@192.168.0.10 SIP/2.0
Via: SIP/2.0/UDP 192.168.0.19:5060;branch=z9hG4bK14d2ba04;rport
Max-Forwards: 70
From: "Anonymous" <sip:411115@anonymous.invalid>;tag=as1d444787
To: <sip:15571917@192.168.0.10>;tag=as1683a51b
Contact: <sip:411115@192.168.0.19:5060>
Call-ID: 31beab764ede04f67a5534a02ccd6627@192.168.0.19:5060
CSeq: 102 ACK
User-Agent: InfoMek
Content-Length: 0


---
[Jun 18 12:08:39] NOTICE[3075][C-00002fb8]: chan_sip.c:22705 handle_response_invite: Failed to authenticate on INVITE to '"Anonymous" <sip:411115@anonymous.invalid>;tag=as1d444787'