U 74.208.77.139:5082 -> 27.50.86.100:5060
INVITE sip:9001141215083187@27.50.86.100 SIP/2.0.
To: 9001141215083187<sip:9001141215083187@27.50.86.100>.
From: 2310<sip:2310@27.50.86.100>;tag=fd83190e.
Via: SIP/2.0/UDP 74.208.77.139:5082;branch=z9hG4bK-cef710a1f748aca68c9c499b174e9291;rport.
Call-ID: cef710a1f748aca68c9c499b174e9291.
CSeq: 1 INVITE.
Contact: <sip:2310@74.208.77.139:5082>.
Max-Forwards: 70.
Allow: INVITE, ACK, CANCEL, BYE.
User-Agent: sipcli/v1.8.
Content-Type: application/sdp.
Content-Length: 283.
.
v=0.
o=sipcli-Session 1755103736 1981231565 IN IP4 74.208.77.139.
s=sipcli.
c=IN IP4 74.208.77.139.
t=0 0.
m=audio 5072 RTP/AVP 18 0 8 101.
a=fmtp:101 0-15.
a=rtpmap:18 G729/8000.
a=rtpmap:0 PCMU/8000.
a=rtpmap:8 PCMA/8000.
a=rtpmap:101 telephone-event/8000.
a=ptime:20.
a=sendrecv.


U 27.50.86.100:5060 -> 74.208.77.139:5082
SIP/2.0 401 Unauthorized.
Via: SIP/2.0/UDP 74.208.77.139:5082;branch=z9hG4bK-cef710a1f748aca68c9c499b174e9291;received=74.208.77.139;rport=5082.
From: 2310<sip:2310@27.50.86.100>;tag=fd83190e.
To: 9001141215083187<sip:9001141215083187@27.50.86.100>;tag=as3b2310ca.
Call-ID: cef710a1f748aca68c9c499b174e9291.
CSeq: 1 INVITE.
Server: FPBX-2.9.0(1.8.9.2).
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH.
Supported: replaces, timer.
WWW-Authenticate: Digest algorithm=MD5, realm="asterisk", nonce="2a8b13f8".
Content-Length: 0.
.