U 2016/11/07 07:01:54.365223 2.2.2.2:43202 -> 1.1.1.1:5068
INVITE sip:1234567@1.1.1.1:5068;transport=UDP SIP/2.0.
Via: SIP/2.0/UDP 2.2.2.2:43202;branch=z9hG4bK-524287-1---6c39d23ff5c43a45.
Max-Forwards: 70.
Contact: <sip:7654321@2.2.2.2:43202;transport=UDP>.
To: <sip:1234567@1.1.1.1:5068;transport=UDP>.
From: <sip:7654321@1.1.1.1:5068;transport=UDP>;tag=2931624b.
Call-ID: Us0IW2TT4dZBUyQSriTuLg...
CSeq: 1 INVITE.
Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS, INFO, SUBSCRIBE.
Content-Type: application/sdp.
Supported: replaces, norefersub, extended-refer, timer, outbound, path, X-cisco-serviceuri.
User-Agent: Z 3.9.32144 r32121.
Allow-Events: presence, kpml.
Content-Length: 165.
.
v=0.
o=Z 0 0 IN IP4 2.2.2.2.
s=Z.
c=IN IP4 2.2.2.2.
t=0 0.
m=audio 8000 RTP/AVP 8 101.
a=rtpmap:101 telephone-event/8000.
a=fmtp:101 0-16.
a=sendrecv.


U 2016/11/07 07:01:54.366773 1.1.1.1:5068 -> 2.2.2.2:43202
SIP/2.0 407 Proxy Authentication Required.
Via: SIP/2.0/UDP 2.2.2.2:43202;received=2.2.2.2;rport=43202;branch=z9hG4bK-524287-1---6c39d23ff5c43a45.
To: <sip:1234567@1.1.1.1:5068;transport=UDP>;tag=a61f83fdd32877dcc81f9a0d7320db06.4831.
From: <sip:7654321@1.1.1.1:5068;transport=UDP>;tag=2931624b.
Call-ID: Us0IW2TT4dZBUyQSriTuLg...
CSeq: 1 INVITE.
Proxy-Authenticate: Digest realm="1.1.1.1", nonce="58206d41000000006f9c34cbbc5432bf30964b6fcec80fd2".
Content-Length: 0.
.


U 2016/11/07 07:01:54.368491 2.2.2.2:43202 -> 1.1.1.1:5068
ACK sip:1234567@1.1.1.1:5068;transport=UDP SIP/2.0.
Via: SIP/2.0/UDP 2.2.2.2:43202;branch=z9hG4bK-524287-1---6c39d23ff5c43a45.
Max-Forwards: 70.
To: <sip:1234567@1.1.1.1:5068;transport=UDP>;tag=a61f83fdd32877dcc81f9a0d7320db06.4831.
From: <sip:7654321@1.1.1.1:5068;transport=UDP>;tag=2931624b.
Call-ID: Us0IW2TT4dZBUyQSriTuLg...
CSeq: 1 ACK.
Content-Length: 0.
.


U 2016/11/07 07:01:54.371276 2.2.2.2:43202 -> 1.1.1.1:5068
INVITE sip:1234567@1.1.1.1:5068;transport=UDP SIP/2.0.
Via: SIP/2.0/UDP 2.2.2.2:43202;branch=z9hG4bK-524287-1---49ddf061a63dbdb5.
Max-Forwards: 70.
Contact: <sip:7654321@2.2.2.2:43202;transport=UDP>.
To: <sip:1234567@1.1.1.1:5068;transport=UDP>.
From: <sip:7654321@1.1.1.1:5068;transport=UDP>;tag=2931624b.
Call-ID: Us0IW2TT4dZBUyQSriTuLg...
CSeq: 2 INVITE.
Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS, INFO, SUBSCRIBE.
Content-Type: application/sdp.
Proxy-Authorization: Digest username="0000145",realm="1.1.1.1",nonce="58206d41000000006f9c34cbbc5432bf30964b6fcec80fd2",uri="sip:1234567@1.1.1.1:5068;transport=UDP",response="03a87eb9df49b8db1b7b371236c98a40",algorithm=MD5.
Supported: replaces, norefersub, extended-refer, timer, outbound, path, X-cisco-serviceuri.
User-Agent: Z 3.9.32144 r32121.
Allow-Events: presence, kpml.
Content-Length: 165.
.
v=0.
o=Z 0 0 IN IP4 2.2.2.2.
s=Z.
c=IN IP4 2.2.2.2.
t=0 0.
m=audio 8000 RTP/AVP 8 101.
a=rtpmap:101 telephone-event/8000.
a=fmtp:101 0-16.
a=sendrecv.


U 2016/11/07 07:01:54.383949 1.1.1.1:5068 -> 2.2.2.2:43202
SIP/2.0 407 Proxy Authentication Required.
Via: SIP/2.0/UDP 2.2.2.2:43202;received=2.2.2.2;rport=43202;branch=z9hG4bK-524287-1---49ddf061a63dbdb5.
To: <sip:1234567@1.1.1.1:5068;transport=UDP>;tag=B2B.457.222.1478520113.
From: <sip:7654321@1.1.1.1:5068;transport=UDP>;tag=2931624b.
Call-ID: Us0IW2TT4dZBUyQSriTuLg...
CSeq: 2 INVITE.
Contact: <sip:1.1.1.1:5068>.
Content-Length: 0.
.


U 2016/11/07 07:01:54.386028 2.2.2.2:43202 -> 1.1.1.1:5068
ACK sip:1234567@1.1.1.1:5068;transport=UDP SIP/2.0.
Via: SIP/2.0/UDP 2.2.2.2:43202;branch=z9hG4bK-524287-1---49ddf061a63dbdb5.
Max-Forwards: 70.
To: <sip:1234567@1.1.1.1:5068;transport=UDP>;tag=B2B.457.222.1478520113.
From: <sip:7654321@1.1.1.1:5068;transport=UDP>;tag=2931624b.
Call-ID: Us0IW2TT4dZBUyQSriTuLg...
CSeq: 2 ACK.
Content-Length: 0.