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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I believe that we have identified a bug in SER related to
limitations in the size of the SIP message SER will <span class=SpellE>t_relay</span>.
This bug is easily reproducible and is described as follows:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Infrastructure description:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><span style='mso-tab-count:1'> </span>Internet
<-> SER/<span class=SpellE>rtpproxy</span> 8.14 <-> Asterisk SIP2PSTN
GW<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in;text-indent:-.25in;mso-list:l1 level1 lfo1;
tab-stops:list .5in'><![if !supportLists]><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial;mso-fareast-font-family:Arial'><span
style='mso-list:Ignore'>1.)<font size=1 face="Times New Roman"><span
style='font:7.0pt "Times New Roman"'> </span></font></span></span></font><![endif]><span
dir=LTR><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>In
my setup, I am using Asterisk as a SIP2PSTN gateway.<o:p></o:p></span></font></span></p>
<p class=MsoNormal style='margin-left:.5in;text-indent:-.25in;mso-list:l1 level1 lfo1;
tab-stops:list .5in'><![if !supportLists]><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial;mso-fareast-font-family:Arial'><span
style='mso-list:Ignore'>2.)<font size=1 face="Times New Roman"><span
style='font:7.0pt "Times New Roman"'> </span></font></span></span></font><![endif]><span
dir=LTR><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>Asterisk
is deployed on a non-routable address segment.<o:p></o:p></span></font></span></p>
<p class=MsoNormal style='margin-left:.5in;text-indent:-.25in;mso-list:l1 level1 lfo1;
tab-stops:list .5in'><![if !supportLists]><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial;mso-fareast-font-family:Arial'><span
style='mso-list:Ignore'>3.)<font size=1 face="Times New Roman"><span
style='font:7.0pt "Times New Roman"'> </span></font></span></span></font><![endif]><span
dir=LTR><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>I
have SER/<span class=SpellE>rtpproxy</span> 8.14 deployed on an internet
routable segment.<o:p></o:p></span></font></span></p>
<p class=MsoNormal style='margin-left:.5in;text-indent:-.25in;mso-list:l1 level1 lfo1;
tab-stops:list .5in'><![if !supportLists]><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial;mso-fareast-font-family:Arial'><span
style='mso-list:Ignore'>4.)<font size=1 face="Times New Roman"><span
style='font:7.0pt "Times New Roman"'> </span></font></span></span></font><![endif]><span
dir=LTR><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>Users
register to SER at the DMZ border.<o:p></o:p></span></font></span></p>
<p class=MsoNormal style='margin-left:.5in;text-indent:-.25in;mso-list:l1 level1 lfo1;
tab-stops:list .5in'><![if !supportLists]><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial;mso-fareast-font-family:Arial'><span
style='mso-list:Ignore'>5.)<font size=1 face="Times New Roman"><span
style='font:7.0pt "Times New Roman"'> </span></font></span></span></font><![endif]><span
dir=LTR><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>When
a user makes a telephone call, SER <span class=SpellE>t_relay’s</span>
the INVITE in Asterisk<o:p></o:p></span></font></span></p>
<p class=MsoNormal style='margin-left:.5in;text-indent:-.25in;mso-list:l1 level1 lfo1;
tab-stops:list .5in'><![if !supportLists]><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial;mso-fareast-font-family:Arial'><span
style='mso-list:Ignore'>6.)<font size=1 face="Times New Roman"><span
style='font:7.0pt "Times New Roman"'> </span></font></span></span></font><![endif]><span
dir=LTR><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>During
call setup, <span class=SpellE>rtpproxy</span> is used to connect <span
class=SpellE>rtp</span> from the caller to the Asterisk GW.<o:p></o:p></span></font></span></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Problem description:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>With the current setup, a user can take a phone such as a
Cisco 7960 or Xten soft phone and successfully register, make calls, and receive
calls. These clients may be behind NAT firewalls. SER is resolving NAT
configuration issues with the assistance of the <span class=SpellE>NAThelper</span>
module. Recently, we began testing with products from Ingate and <span
class=SpellE>Jasomi</span>. Customers are intent on using these vendor supplied
solutions to enable <span class=SpellE>UA’s</span> hosted on their
corporate intranets to access external sip services. Each solution is deployed
in a similar manner. This architecture is described as follows:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in;text-indent:-.25in;mso-list:l0 level1 lfo2;
tab-stops:list .5in'><![if !supportLists]><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial;mso-fareast-font-family:Arial'><span
style='mso-list:Ignore'>1.)<font size=1 face="Times New Roman"><span
style='font:7.0pt "Times New Roman"'> </span></font></span></span></font><![endif]><span
dir=LTR><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>An
Ingate or <span class=SpellE>Jasomi</span> is deployed on an internet routable
segment.<o:p></o:p></span></font></span></p>
<p class=MsoNormal style='margin-left:.5in;text-indent:-.25in;mso-list:l0 level1 lfo2;
tab-stops:list .5in'><![if !supportLists]><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial;mso-fareast-font-family:Arial'><span
style='mso-list:Ignore'>2.)<font size=1 face="Times New Roman"><span
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dir=LTR><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>A
second <span class=SpellE>ingate</span> or <span class=SpellE>Jasomi</span> is
deployed on a non-routable intranet facing segment.<o:p></o:p></span></font></span></p>
<p class=MsoNormal style='margin-left:.5in;text-indent:-.25in;mso-list:l0 level1 lfo2;
tab-stops:list .5in'><![if !supportLists]><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial;mso-fareast-font-family:Arial'><span
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dir=LTR><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>An
<span class=SpellE>ipsec</span> tunnel is constructed between the two <span
class=SpellE>ingates</span>.<o:p></o:p></span></font></span></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>In this segment, <span class=SpellE>UA’s</span> on the
intranet use the intranet Ingate or <span class=SpellE>Jasomi</span> as a
standard SIP proxy to access external SIP services. To facilitate this, both
are configured in a “hard forward” manner to push SIP traffic across
the <span class=SpellE>ipsec</span> tunnel to the seconds Ingate or <span
class=SpellE>Jasomi</span>.<span style='mso-spacerun:yes'> </span>We have
successfully registered from the intranet to our internet facing SER
implementation through this setup. We are also able to make calls from our
intranet through this proxy setup internet facing 3<sup>rd</sup> party SIP end points.
However, when we attempt to send an INVITE to our SER/<span class=SpellE>rtpproxy</span>
infrastructure, SER truncates the INVITE when it is forwarded to our Asterisk
GW. Asterisk follows through with the INVITE process and will ring the intended
phone. However, when the called party answers, Asterisk is unable to complete
call setup because the “a” and “m” parameters are missing
from the SDP. At this point the called party is dropped and the Ingate and the UA
are left waiting for the RTP or a BYE that never comes.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>From our observation, this problem is due to the size of the
SIP INVITE, which is sent to SER. Both Ingate and <span class=SpellE>Jasomi</span>
create additional VIA parameters in the SIP INVITE in order to store state
information. This state information is stored in encrypted strings in the <span
class=SpellE>xdata</span> field of the VIA.<span
style='mso-spacerun:yes'> </span>It seems that the addition of these VIA
fields increases the size of the SIP message beyond the <span class=SpellE>SER’s</span>
limits causing truncation upon relay. When the INVITE is <span class=SpellE>t_<span
class=GramE>relay’ed</span></span>, much of the SDP is missing.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Please see the following <span class=SpellE>ngrep</span> of
the SIP INVITE being relayed. I have replaced all pertinent address information
for our own disclosure purposes.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>______________________________________________<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Device list:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Ingate: <span style='mso-tab-count:1'> </span>10.1.1.1<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>SER: <span style='mso-tab-count:1'> </span><span
style='mso-tab-count:1'> </span>10.2.2.2/sbc1.mydomain.com<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Xten UA: <span style='mso-tab-count:1'> </span>10.3.3.3<o:p></o:p></span></font></p>
<div style='border:none;border-bottom:solid windowtext 1.5pt;padding:0in 0in 1.0pt 0in'>
<p class=MsoNormal style='border:none;mso-border-bottom-alt:solid windowtext 1.5pt;
padding:0in;mso-padding-alt:0in 0in 1.0pt 0in'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>Asterisk <span class=SpellE><span
class=GramE>gw</span></span>:<span style='mso-tab-count:1'> </span>10.4.4.4<o:p></o:p></span></font></p>
</div>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>##<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>U 10.1.1.1:5060 -> 10.2.2.2:5060<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>INVITE sip:16179086547@sbc1.mydomain.com SIP/2.0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 10.1.1.1:5060<span class=GramE>;branch</span>=z9hG4bK8d1c8a92109d8a370c7f7299b985c8f4.0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 0.0.0.0<span class=GramE>;branch</span>=z9hG4bK94ce1c153879cbc60c7f7299b985c8f4.0;xdata=UkrU+mWJLaKZXFCdTMwK3YcFmw9BXXO0mZ-oXaK-fZQ_.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 0.0.0.0<span class=GramE>;branch</span>=z9hG4bKA3614A811BC64CCB8E74944E08E28F13;rport=35060;branch=z9hG4bKA3614A811BC64CCB8E74944E08E28F13;xdata=8BnRlTLlFQxaEMygbWSMP79KbMGMDOh+FcKZmz3mvlR09UTlKI5NKdRfAsMB1v-2.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>From: Test User <sip:6173164000@sbc1.mydomain.com:35060>;tag=4167926089.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>To: <sip:16179086547@sbc1.mydomain.com>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Contact: <sip:esF1vz2EczTjGzG7n6VSFaJSXkL7bF2zwIo3bfnGcryex2fyUkto0gwwTTREPunT71-RsgM6xtWrz8Yc_PUuyGwcHdfV0OieldqEwsaPMEJLsA5in1v1fKYFFWpWOtqrj@10.1.1.1>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Call-ID: 537E6EED-0DCD-4DDF-AE66-EDCC8A95DC79@10.3.3.3.<o:p></o:p></span></font></p>
<p class=MsoNormal><span class=SpellE><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>CSeq</span></font></span><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>: 12666
INVITE.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Max-Forwards: 68.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Content-Type: application/<span class=SpellE>sdp</span>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>User-Agent: X-<span class=SpellE>Lite</span> release 1103m.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Record-Route: <sip:dd4f232@10.1.1.1;lr>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Record-Route: <sip:eDpENJ1vtGdOGot7umZmcMs7cLQcpirjPwNAsYLWoPXQlOnCIQZXXwov084odkZ_h@10.1.1.1;lr>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Content-Length: 230.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>v=0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>o=6173164000 94360252 94360262 IN IP4 10.1.1.1.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>s=X-<span class=SpellE>Lite</span>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>c=IN IP4 10.1.1.1.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>t=0 0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>m=audio 58192 RTP/AVP 0 8 101.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>a=rtpmap<span class=GramE>:0</span> pcmu/8000.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>a=rtpmap<span class=GramE>:8</span> pcma/8000.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>a=rtpmap<span class=GramE>:101</span> telephone-event/8000.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>a=fmtp<span class=GramE>:101</span> 0-15.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>#<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>U 10.2.2.2:5060 -> 10.1.1.1:5060<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>SIP/2.0 407 Proxy Authentication Required.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 10.1.1.1:5060<span class=GramE>;branch</span>=z9hG4bK8d1c8a92109d8a370c7f7299b985c8f4.0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 0.0.0.0<span class=GramE>;branch</span>=z9hG4bK94ce1c153879cbc60c7f7299b985c8f4.0;xdata=UkrU+mWJLaKZXFCdTMwK3YcFmw9BXXO0mZ-oXaK-fZQ_.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 0.0.0.0<span class=GramE>;branch</span>=z9hG4bKA3614A811BC64CCB8E74944E08E28F13;rport=35060;branch=z9hG4bKA3614A811BC64CCB8E74944E08E28F13;xdata=8BnRlTLlFQxaEMygbWSMP79KbMGMDOh+FcKZmz3mvlR09UTlKI5NKdRfAsMB1v-2.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>From: Test User <sip:6173164000@sbc1.mydomain.com:35060>;tag=4167926089.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>To: <sip:16179086547@sbc1.mydomain.com>;tag=b27e1a1d33761e85846fc98f5f3a7e58.6c1d.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Call-ID: 537E6EED-0DCD-4DDF-AE66-EDCC8A95DC79@10.3.3.3.<o:p></o:p></span></font></p>
<p class=MsoNormal><span class=SpellE><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>CSeq</span></font></span><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>: 12666
INVITE.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Proxy-Authenticate: Digest realm="sbc1.mydomain.com",
nonce="4140d569a58f4230a925f11b564c223a856b792a".<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Server: Sip <span class=SpellE>EXpress</span> router (0.8.14
(i386/linux)).<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Content-Length: 0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Warning: 392 10.2.2.2:5060 "Noisy feedback tells:<span
style='mso-spacerun:yes'> </span><span class=SpellE><span class=GramE>pid</span></span><span
class=GramE>=</span>26357 <span class=SpellE>req_src_ip</span>=10.1.1.1 <span
class=SpellE>req_src_port</span>=5060 <span class=SpellE>in_uri</span>=sip:16179086547@sbc1.mydomain.com
<span class=SpellE>out_uri</span>=sip:16179086547@sbc1.mydomain.com <span
class=SpellE>via_cnt</span>==3".<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>#<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>U 10.1.1.1:5060 -> 10.2.2.2:5060<o:p></o:p></span></font></p>
<p class=MsoNormal><span class=GramE><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>ACK sip:16179086547@sbc1.mydomain.com
SIP/2.0.</span></font></span><font size=2 face=Arial><span style='font-size:
10.0pt;font-family:Arial'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 10.1.1.1:5060<span class=GramE>;branch</span>=z9hG4bK8d1c8a92109d8a370c7f7299b985c8f4.0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>From: Test User <sip:6173164000@sbc1.mydomain.com:35060>;tag=4167926089.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>To: <sip:16179086547@sbc1.mydomain.com>;tag=b27e1a1d33761e85846fc98f5f3a7e58.6c1d.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Call-ID: 537E6EED-0DCD-4DDF-AE66-EDCC8A95DC79@10.3.3.3.<o:p></o:p></span></font></p>
<p class=MsoNormal><span class=SpellE><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>CSeq</span></font></span><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>: 12666 ACK.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Content-Length: 0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>#<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>U 10.1.1.1:5060 -> 10.2.2.2:5060 15763@0:1480<o:p></o:p></span></font></p>
<p class=MsoNormal><span class=GramE><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>.......0INVITE sip:16179086547@sbc1.mydomain.com
SIP/2.0.</span></font></span><font size=2 face=Arial><span style='font-size:
10.0pt;font-family:Arial'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 10.1.1.1:5060<span class=GramE>;branch</span>=z9hG4bK3fb33a2d10203ada0c7f7299b985c8f4.0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 0.0.0.0<span class=GramE>;branch</span>=z9hG4bK4afb43404e7c33130c7f7299b985c8f4.0;xdata=Ly0nkoyID7sZ1hOYXRKnV3gFIgkEphTIhD00WmRnWSo_.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 0.0.0.0<span class=GramE>;branch</span>=z9hG4bK080E9671A10348788D72788ABB32E000;rport=35060;branch=z9hG4bK080E9671A10348788D72788ABB32E000;xdata=g8U1gLW+1SbzScgzuAlduOZYSyicHJNYp0Htso2oJc909UTlKI5NKdRfAsMB1v-2.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>From: Test User <sip:6173164000@sbc1.mydomain.com:35060>;tag=4167926089.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>To: <sip:16179086547@sbc1.mydomain.com>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Contact: <sip:e2AyJyUQgCGf_Y06tu_rM3e-U3sthj-vO8pYWVWTJVaikNLrDMx5XcCCLEBXvjyirBshBuEUU_feciI091Ig8MNh7KZJzeH1d4fC7EsItfCfsA5in1v1fKYFFWpWOtqrj@10.1.1.1>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Call-ID: 537E6EED-0DCD-4DDF-AE66-EDCC8A95DC79@10.3.3.3.<o:p></o:p></span></font></p>
<p class=MsoNormal><span class=SpellE><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>CSeq</span></font></span><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>: 12667
INVITE.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Proxy-Authorization: Digest username="6173164000"<span
class=GramE>,realm</span>="sbc1.mydomain.com",nonce="4140d569a58f4230a925f11b564c223a856b792a",response="e9a140cc3bad75e35c6a96449ff7cc41",uri="sip:16179086547@sbc1.mydomain.com".<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Max-Forwards: 68.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Content-Type: application/<span class=SpellE>sdp</span>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>User-Agent: X-<span class=SpellE>Lite</span> release 1103m.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Record-Route: <sip:dd4f232@10.1.1.1;lr>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Record-Route: <sip:e7DlN09kmHaZbabZRm9W0bzJ0uoyUyFM0PVyKvgCloKvDqsLXMsCA6nvRkR8LsbRi@10.1.1.1;lr>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Content-Length: 230.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>v=0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>o=6173164000 94360252 94360262 IN IP4 10.1.1.1.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>s=X-<span class=SpellE>Lite</span>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>c=IN IP4 10.1.1.1.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>t=0 0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>m=audio 58194 RTP/AVP 0 8 101.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>a=rtpmap<span class=GramE>:0</span> pcmu/8000.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>a=rtpmap<span class=GramE>:8</span> <span class=SpellE>pcma</span><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>#<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>U 10.2.2.2:5060 -> 10.1.1.1:5060<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>SIP/2.0 100 trying -- your call is important to us.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 10.1.1.1:5060<span class=GramE>;branch</span>=z9hG4bK3fb33a2d10203ada0c7f7299b985c8f4.0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 0.0.0.0<span class=GramE>;branch</span>=z9hG4bK4afb43404e7c33130c7f7299b985c8f4.0;xdata=Ly0nkoyID7sZ1hOYXRKnV3gFIgkEphTIhD00WmRnWSo_.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 0.0.0.0<span class=GramE>;branch</span>=z9hG4bK080E9671A10348788D72788ABB32E000;rport=35060;branch=z9hG4bK080E9671A10348788D72788ABB32E000;xdata=g8U1gLW+1SbzScgzuAlduOZYSyicHJNYp0Htso2oJc909UTlKI5NKdRfAsMB1v-2.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>From: Test User <sip:6173164000@sbc1.mydomain.com:35060>;tag=4167926089.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>To: <sip:16179086547@sbc1.mydomain.com>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Call-ID: 537E6EED-0DCD-4DDF-AE66-EDCC8A95DC79@10.3.3.3.<o:p></o:p></span></font></p>
<p class=MsoNormal><span class=SpellE><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>CSeq</span></font></span><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>: 12667
INVITE.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Server: Sip <span class=SpellE>EXpress</span> router (0.8.14
(i386/linux)).<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Content-Length: 0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Warning: 392 10.2.2.2:5060 "Noisy feedback tells:<span
style='mso-spacerun:yes'> </span><span class=SpellE><span class=GramE>pid</span></span><span
class=GramE>=</span>26356 <span class=SpellE>req_src_ip</span>=10.1.1.1 <span
class=SpellE>req_src_port</span>=5060 <span class=SpellE>in_uri</span>=sip:16179086547@sbc1.mydomain.com
<span class=SpellE>out_uri</span>=sip:16179086547@10.4.4.4:5060 <span
class=SpellE>via_cnt</span>==3".<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>#<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>U 10.2.2.2:5060 -> 10.4.4.4:5060 64701@0:1480<o:p></o:p></span></font></p>
<p class=MsoNormal><span class=GramE><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>.......<span class=SpellE>qINVITE</span>
sip:16179086547@10.4.4.4:5060 SIP/2.0.</span></font></span><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Record-Route: <sip:16179086547@10.2.2.2;ftag=4167926089;lr=on>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 10.2.2.2<span class=GramE>;branch</span>=z9hG4bKa01f.bbf787d1.0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 10.1.1.1:5060<span class=GramE>;branch</span>=z9hG4bK3fb33a2d10203ada0c7f7299b985c8f4.0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 0.0.0.0<span class=GramE>;branch</span>=z9hG4bK4afb43404e7c33130c7f7299b985c8f4.0;xdata=Ly0nkoyID7sZ1hOYXRKnV3gFIgkEphTIhD00WmRnWSo_.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 0.0.0.0<span class=GramE>;branch</span>=z9hG4bK080E9671A10348788D72788ABB32E000;rport=35060;branch=z9hG4bK080E9671A10348788D72788ABB32E000;xdata=g8U1gLW+1SbzScgzuAlduOZYSyicHJNYp0Htso2oJc909UTlKI5NKdRfAsMB1v-2.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>From: Test User <sip:6173164000@sbc1.mydomain.com:35060>;tag=4167926089.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>To: <sip:16179086547@sbc1.mydomain.com>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Contact: <sip:e2AyJyUQgCGf_Y06tu_rM3e-U3sthj-vO8pYWVWTJVaikNLrDMx5XcCCLEBXvjyirBshBuEUU_feciI091Ig8MNh7KZJzeH1d4fC7EsItfCfsA5in1v1fKYFFWpWOtqrj@10.1.1.1>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Call-ID: 537E6EED-0DCD-4DDF-AE66-EDCC8A95DC79@10.3.3.3.<o:p></o:p></span></font></p>
<p class=MsoNormal><span class=SpellE><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>CSeq</span></font></span><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>: 12667
INVITE.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Proxy-Authorization: Digest username="6173164000"<span
class=GramE>,realm</span>="sbc1.mydomain.com",nonce="4140d569a58f4230a925f11b564c223a856b792a",response="e9a140cc3bad75e35c6a96449ff7cc41",uri="sip:16179086547@sbc1.mydomain.com".<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Max-Forwards: 67.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Content-Type: application/<span class=SpellE>sdp</span>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>User-Agent: X-<span class=SpellE>Lite</span> release 1103m.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Record-Route: <sip:dd4f232@10.1.1.1;lr>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Record-Route: <sip:e7DlN09kmHaZbabZRm9W0bzJ0uoyUyFM0PVyKvgCloKvDqsLXMsCA6nvRkR8LsbRi@10.1.1.1;lr>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Content-Length: 230.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>v=0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>o=6173164000 94360252 94360262 I<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>#<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>U 10.2.2.2:5060 -> 10.4.4.4:5060 64702@0:1480<o:p></o:p></span></font></p>
<p class=MsoNormal><span class=GramE><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>.......<span class=SpellE>qINVITE</span>
sip:16179086547@10.4.4.4:5060 SIP/2.0.</span></font></span><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Record-Route: <sip:16179086547@10.2.2.2;ftag=4167926089;lr=on>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 10.2.2.2<span class=GramE>;branch</span>=z9hG4bKa01f.bbf787d1.0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 10.1.1.1:5060<span class=GramE>;branch</span>=z9hG4bK3fb33a2d10203ada0c7f7299b985c8f4.0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 0.0.0.0<span class=GramE>;branch</span>=z9hG4bK4afb43404e7c33130c7f7299b985c8f4.0;xdata=Ly0nkoyID7sZ1hOYXRKnV3gFIgkEphTIhD00WmRnWSo_.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 0.0.0.0<span class=GramE>;branch</span>=z9hG4bK080E9671A10348788D72788ABB32E000;rport=35060;branch=z9hG4bK080E9671A10348788D72788ABB32E000;xdata=g8U1gLW+1SbzScgzuAlduOZYSyicHJNYp0Htso2oJc909UTlKI5NKdRfAsMB1v-2.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>From: Test User <sip:6173164000@sbc1.mydomain.com:35060>;tag=4167926089.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>To: <sip:16179086547@sbc1.mydomain.com>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Contact: <sip:e2AyJyUQgCGf_Y06tu_rM3e-U3sthj-vO8pYWVWTJVaikNLrDMx5XcCCLEBXvjyirBshBuEUU_feciI091Ig8MNh7KZJzeH1d4fC7EsItfCfsA5in1v1fKYFFWpWOtqrj@10.1.1.1>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Call-ID: 537E6EED-0DCD-4DDF-AE66-EDCC8A95DC79@10.3.3.3.<o:p></o:p></span></font></p>
<p class=MsoNormal><span class=SpellE><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>CSeq</span></font></span><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>: 12667
INVITE.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Proxy-Authorization: Digest username="6173164000"<span
class=GramE>,realm</span>="sbc1.mydomain.com",nonce="4140d569a58f4230a925f11b564c223a856b792a",response="e9a140cc3bad75e35c6a96449ff7cc41",uri="sip:16179086547@sbc1.mydomain.com".<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Max-Forwards: 67.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Content-Type: application/<span class=SpellE>sdp</span>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>User-Agent: X-<span class=SpellE>Lite</span> release 1103m.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Record-Route: <sip:dd4f232@10.1.1.1;lr>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Record-Route: <sip:e7DlN09kmHaZbabZRm9W0bzJ0uoyUyFM0PVyKvgCloKvDqsLXMsCA6nvRkR8LsbRi@10.1.1.1;lr>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Content-Length: 230.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>v=0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>o=6173164000 94360252 94360262 I<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>#<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>U 10.4.4.4:5060 -> 10.2.2.2:5060<o:p></o:p></span></font></p>
<p class=MsoNormal><span class=GramE><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>SIP/2.0 100 Trying.</span></font></span><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 10.2.2.2<span class=GramE>;branch</span>=z9hG4bKa01f.bbf787d1.0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 10.1.1.1:5060<span class=GramE>;branch</span>=z9hG4bK3fb33a2d10203ada0c7f7299b985c8f4.0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 0.0.0.0<span class=GramE>;branch</span>=z9hG4bK4afb43404e7c33130c7f7299b985c8f4.0;xdata=Ly0nkoyID7sZ1hOYXRKnV3gFIgkEphTIhD00WmRnWSo_.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 0.0.0.0<span class=GramE>;branch</span>=z9hG4bK080E9671A10348788D72788ABB32E000;rport=35060;branch=z9hG4bK080E9671A10348788D72788ABB32E000;xdata=g8U1gLW+1SbzScgzuAlduOZYSyicHJNYp0Htso2oJc909UTlKI5NKdRfAsMB1v-2.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>From: Test User <sip:6173164000@sbc1.mydomain.com:35060>;tag=4167926089.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>To: <sip:16179086547@sbc1.mydomain.com>;tag=as3b7f7d4e.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Call-ID: 537E6EED-0DCD-4DDF-AE66-EDCC8A95DC79@10.3.3.3.<o:p></o:p></span></font></p>
<p class=MsoNormal><span class=SpellE><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>CSeq</span></font></span><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>: 12667
INVITE.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>User-Agent: Asterisk PBX.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Allow: INVITE, ACK, CANCEL, OPTIONS, <span class=GramE>BYE</span>,
REFER.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Contact: <sip:16179086547@10.4.4.4>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Content-Length: 0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>#<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>U 10.4.4.4:5060 -> 10.2.2.2:5060<o:p></o:p></span></font></p>
<p class=MsoNormal><span class=GramE><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>SIP/2.0 183 Session Progress.</span></font></span><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 10.2.2.2<span class=GramE>;branch</span>=z9hG4bKa01f.bbf787d1.0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 10.1.1.1:5060<span class=GramE>;branch</span>=z9hG4bK3fb33a2d10203ada0c7f7299b985c8f4.0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 0.0.0.0<span class=GramE>;branch</span>=z9hG4bK4afb43404e7c33130c7f7299b985c8f4.0;xdata=Ly0nkoyID7sZ1hOYXRKnV3gFIgkEphTIhD00WmRnWSo_.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 0.0.0.0<span class=GramE>;branch</span>=z9hG4bK080E9671A10348788D72788ABB32E000;rport=35060;branch=z9hG4bK080E9671A10348788D72788ABB32E000;xdata=g8U1gLW+1SbzScgzuAlduOZYSyicHJNYp0Htso2oJc909UTlKI5NKdRfAsMB1v-2.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>From: Test User <sip:6173164000@sbc1.mydomain.com:35060>;tag=4167926089.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>To: <sip:16179086547@sbc1.mydomain.com>;tag=as3b7f7d4e.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Call-ID: 537E6EED-0DCD-4DDF-AE66-EDCC8A95DC79@10.3.3.3.<o:p></o:p></span></font></p>
<p class=MsoNormal><span class=SpellE><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>CSeq</span></font></span><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>: 12667
INVITE.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>User-Agent: Asterisk PBX.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Allow: INVITE, ACK, CANCEL, OPTIONS, <span class=GramE>BYE</span>,
REFER.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Contact: <sip:16179086547@10.4.4.4>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Content-Type: application/<span class=SpellE>sdp</span>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Content-Length: 259.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>v=0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>o=root 4025 <span class=SpellE>4025</span> IN IP4 10.4.4.4.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>s=session.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>c=IN IP4 10.4.4.4.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>t=0 0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>m=audio 19052 RTP/AVP 3 0 8 101.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>a=rtpmap<span class=GramE>:3</span> GSM/8000.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>a=rtpmap<span class=GramE>:0</span> <span class=GramE>PCMU/8000.</span><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>a=rtpmap<span class=GramE>:8</span> PCMA/8000.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>a=rtpmap<span class=GramE>:101</span> telephone-event/8000.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>a=fmtp<span class=GramE>:101</span> 0-16.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>a=<span class=SpellE>silenceSupp<span class=GramE>:off</span></span>
- - - -.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>#<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>U 10.2.2.2:5060 -> 10.1.1.1:5060<o:p></o:p></span></font></p>
<p class=MsoNormal><span class=GramE><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>SIP/2.0 183 Session Progress.</span></font></span><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 10.1.1.1:5060<span class=GramE>;branch</span>=z9hG4bK3fb33a2d10203ada0c7f7299b985c8f4.0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 0.0.0.0<span class=GramE>;branch</span>=z9hG4bK4afb43404e7c33130c7f7299b985c8f4.0;xdata=Ly0nkoyID7sZ1hOYXRKnV3gFIgkEphTIhD00WmRnWSo_.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 0.0.0.0<span class=GramE>;branch</span>=z9hG4bK080E9671A10348788D72788ABB32E000;rport=35060;branch=z9hG4bK080E9671A10348788D72788ABB32E000;xdata=g8U1gLW+1SbzScgzuAlduOZYSyicHJNYp0Htso2oJc909UTlKI5NKdRfAsMB1v-2.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>From: Test User <sip:6173164000@sbc1.mydomain.com:35060>;tag=4167926089.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>To: <sip:16179086547@sbc1.mydomain.com>;tag=as3b7f7d4e.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Call-ID: 537E6EED-0DCD-4DDF-AE66-EDCC8A95DC79@10.3.3.3.<o:p></o:p></span></font></p>
<p class=MsoNormal><span class=SpellE><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>CSeq</span></font></span><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>: 12667
INVITE.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>User-Agent: Asterisk PBX.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Allow: INVITE, ACK, CANCEL, OPTIONS, <span class=GramE>BYE</span>,
REFER.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Contact: <sip:16179086547@10.4.4.4>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Content-Type: application/<span class=SpellE>sdp</span>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Content-Length: 259.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>v=0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>o=root 4025 <span class=SpellE>4025</span> IN IP4 10.4.4.4.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>s=session.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>c=IN IP4 10.4.4.4.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>t=0 0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>m=audio 19052 RTP/AVP 3 0 8 101.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>a=rtpmap<span class=GramE>:3</span> GSM/8000.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>a=rtpmap<span class=GramE>:0</span> <span class=GramE>PCMU/8000.</span><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>a=rtpmap<span class=GramE>:8</span> PCMA/8000.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>a=rtpmap<span class=GramE>:101</span> telephone-event/8000.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>a=fmtp<span class=GramE>:101</span> 0-16.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>a=<span class=SpellE>silenceSupp<span class=GramE>:off</span></span>
- - - -.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>####<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>U 10.4.4.4:5060 -> 10.2.2.2:5060<o:p></o:p></span></font></p>
<p class=MsoNormal><span class=GramE><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>SIP/2.0 200 OK.</span></font></span><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 10.2.2.2<span class=GramE>;branch</span>=z9hG4bKa01f.bbf787d1.0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 10.1.1.1:5060<span class=GramE>;branch</span>=z9hG4bK3fb33a2d10203ada0c7f7299b985c8f4.0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 0.0.0.0<span class=GramE>;branch</span>=z9hG4bK4afb43404e7c33130c7f7299b985c8f4.0;xdata=Ly0nkoyID7sZ1hOYXRKnV3gFIgkEphTIhD00WmRnWSo_.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 0.0.0.0<span class=GramE>;branch</span>=z9hG4bK080E9671A10348788D72788ABB32E000;rport=35060;branch=z9hG4bK080E9671A10348788D72788ABB32E000;xdata=g8U1gLW+1SbzScgzuAlduOZYSyicHJNYp0Htso2oJc909UTlKI5NKdRfAsMB1v-2.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Record-Route: <sip:16179086547@10.2.2.2;ftag=4167926089;lr=on>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Record-Route: <sip:dd4f232@10.1.1.1;lr>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Record-Route: <sip:e7DlN09kmHaZbabZRm9W0bzJ0uoyUyFM0PVyKvgCloKvDqsLXMsCA6nvRkR8LsbRi@10.1.1.1;lr>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>From: Test User <sip:6173164000@sbc1.mydomain.com:35060>;tag=4167926089.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>To: <sip:16179086547@sbc1.mydomain.com>;tag=as3b7f7d4e.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Call-ID: 537E6EED-0DCD-4DDF-AE66-EDCC8A95DC79@10.3.3.3.<o:p></o:p></span></font></p>
<p class=MsoNormal><span class=SpellE><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>CSeq</span></font></span><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>: 12667
INVITE.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>User-Agent: Asterisk PBX.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Allow: INVITE, ACK, CANCEL, OPTIONS, <span class=GramE>BYE</span>,
REFER.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Contact: <sip:16179086547@10.4.4.4>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Content-Type: application/<span class=SpellE>sdp</span>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Content-Length: 259.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>v=0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>o=root 4025 4026 IN IP4 10.4.4.4.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>s=session.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>c=IN IP4 10.4.4.4.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>t=0 0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>m=audio 19052 RTP/AVP 3 0 8 101.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>a=rtpmap<span class=GramE>:3</span> GSM/8000.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>a=rtpmap<span class=GramE>:0</span> <span class=GramE>PCMU/8000.</span><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>a=rtpmap<span class=GramE>:8</span> PCMA/8000.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>a=rtpmap<span class=GramE>:101</span> telephone-event/8000.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>a=fmtp<span class=GramE>:101</span> 0-16.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>a=<span class=SpellE>silenceSupp<span class=GramE>:off</span></span>
- - - -.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>#<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>U 10.2.2.2:5060 -> 10.1.1.1:5060<o:p></o:p></span></font></p>
<p class=MsoNormal><span class=GramE><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>SIP/2.0 200 OK.</span></font></span><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 10.1.1.1:5060<span class=GramE>;branch</span>=z9hG4bK3fb33a2d10203ada0c7f7299b985c8f4.0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 0.0.0.0<span class=GramE>;branch</span>=z9hG4bK4afb43404e7c33130c7f7299b985c8f4.0;xdata=Ly0nkoyID7sZ1hOYXRKnV3gFIgkEphTIhD00WmRnWSo_.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 0.0.0.0<span class=GramE>;branch</span>=z9hG4bK080E9671A10348788D72788ABB32E000;rport=35060;branch=z9hG4bK080E9671A10348788D72788ABB32E000;xdata=g8U1gLW+1SbzScgzuAlduOZYSyicHJNYp0Htso2oJc909UTlKI5NKdRfAsMB1v-2.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Record-Route: <sip:16179086547@10.2.2.2;ftag=4167926089;lr=on>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Record-Route: <sip:dd4f232@10.1.1.1;lr>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Record-Route: <sip:e7DlN09kmHaZbabZRm9W0bzJ0uoyUyFM0PVyKvgCloKvDqsLXMsCA6nvRkR8LsbRi@10.1.1.1;lr>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>From: Test User <sip:6173164000@sbc1.mydomain.com:35060>;tag=4167926089.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>To: <sip:16179086547@sbc1.mydomain.com>;tag=as3b7f7d4e.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Call-ID: 537E6EED-0DCD-4DDF-AE66-EDCC8A95DC79@10.3.3.3.<o:p></o:p></span></font></p>
<p class=MsoNormal><span class=SpellE><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>CSeq</span></font></span><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>: 12667
INVITE.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>User-Agent: Asterisk PBX.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Allow: INVITE, ACK, CANCEL, OPTIONS, <span class=GramE>BYE</span>,
REFER.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Contact: <sip:16179086547@10.4.4.4>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Content-Type: application/<span class=SpellE>sdp</span>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Content-Length: 259.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>v=0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>o=root 4025 4026 IN IP4 10.4.4.4.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>s=session.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>c=IN IP4 10.4.4.4.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>t=0 0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>m=audio 19052 RTP/AVP 3 0 8 101.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>a=rtpmap<span class=GramE>:3</span> GSM/8000.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>a=rtpmap<span class=GramE>:0</span> <span class=GramE>PCMU/8000.</span><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>a=rtpmap<span class=GramE>:8</span> PCMA/8000.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>a=rtpmap<span class=GramE>:101</span> telephone-event/8000.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>a=fmtp<span class=GramE>:101</span> 0-16.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>a=<span class=SpellE>silenceSupp<span class=GramE>:off</span></span>
- - - -.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>#<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>U 10.1.1.1:5060 -> 10.2.2.2:5060<o:p></o:p></span></font></p>
<p class=MsoNormal><span class=GramE><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>ACK sip:16179086547@10.4.4.4 SIP/2.0.</span></font></span><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 10.1.1.1:5060<span class=GramE>;branch</span>=z9hG4bK3fb33a2d10203ada0c7f7299b985c8f4.0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 0.0.0.0<span class=GramE>;branch</span>=z9hG4bK4afb43404e7c33130c7f7299b985c8f4.0;xdata=Ly0nkoyID7sZ1hOYXRKnV3gFIgkEphTIhD00WmRnWSo_.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 0.0.0.0<span class=GramE>;branch</span>=z9hG4bK8A5B0DBACBFA421DBE4F707FA2084744;rport=35060;branch=z9hG4bK8A5B0DBACBFA421DBE4F707FA2084744;xdata=qDJF1BWCnmazyv84YkNW+wqOln1crB-OMdLqm-1dScJ09UTlKI5NKdRfAsMB1v-2.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>From: Test User <sip:6173164000@sbc1.mydomain.com:35060>;tag=4167926089.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>To: <sip:16179086547@sbc1.mydomain.com>;tag=as3b7f7d4e.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Contact: <sip:e5oUfTi8xf2OqFiDy7UfeA7DqUjH00lIfqT4fsKAkukUTt1duZ_VPH2tfjJwa_F0yN4ZoQcfeXYHJG2YatOPWrhtr0LX4ucrckG00r17249_sA5in1v1fKYFFWpWOtqrj@10.1.1.1>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Route: <sip:16179086547@10.2.2.2;ftag=4167926089;lr=on>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Call-ID: 537E6EED-0DCD-4DDF-AE66-EDCC8A95DC79@10.3.3.3.<o:p></o:p></span></font></p>
<p class=MsoNormal><span class=SpellE><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>CSeq</span></font></span><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>: 12667 ACK.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Max-Forwards: 68.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Content-Length: 0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>#<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>U 10.2.2.2:5060 -> 10.4.4.4:5060<o:p></o:p></span></font></p>
<p class=MsoNormal><span class=GramE><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>ACK sip:16179086547@10.4.4.4 SIP/2.0.</span></font></span><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Record-Route: <sip:16179086547@10.2.2.2;ftag=4167926089;lr=on>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 10.2.2.2<span class=GramE>;branch</span>=0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 10.1.1.1:5060<span class=GramE>;branch</span>=z9hG4bK3fb33a2d10203ada0c7f7299b985c8f4.0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 0.0.0.0<span class=GramE>;branch</span>=z9hG4bK4afb43404e7c33130c7f7299b985c8f4.0;xdata=Ly0nkoyID7sZ1hOYXRKnV3gFIgkEphTIhD00WmRnWSo_.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 0.0.0.0<span class=GramE>;branch</span>=z9hG4bK8A5B0DBACBFA421DBE4F707FA2084744;rport=35060;branch=z9hG4bK8A5B0DBACBFA421DBE4F707FA2084744;xdata=qDJF1BWCnmazyv84YkNW+wqOln1crB-OMdLqm-1dScJ09UTlKI5NKdRfAsMB1v-2.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>From: Test User <sip:6173164000@sbc1.mydomain.com:35060>;tag=4167926089.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>To: <sip:16179086547@sbc1.mydomain.com>;tag=as3b7f7d4e.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Contact: <sip:e5oUfTi8xf2OqFiDy7UfeA7DqUjH00lIfqT4fsKAkukUTt1duZ_VPH2tfjJwa_F0yN4ZoQcfeXYHJG2YatOPWrhtr0LX4ucrckG00r17249_sA5in1v1fKYFFWpWOtqrj@10.1.1.1>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Call-ID: 537E6EED-0DCD-4DDF-AE66-EDCC8A95DC79@10.3.3.3.<o:p></o:p></span></font></p>
<p class=MsoNormal><span class=SpellE><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>CSeq</span></font></span><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>: 12667 ACK.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Max-Forwards: 67.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Content-Length: 0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>. <span style='mso-spacerun:yes'> </span><o:p></o:p></span></font></p>
<div style='border:none;border-bottom:solid windowtext 1.5pt;padding:0in 0in 1.0pt 0in'>
<p class=MsoNormal style='border:none;mso-border-bottom-alt:solid windowtext 1.5pt;
padding:0in;mso-padding-alt:0in 0in 1.0pt 0in'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
</div>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>After this ACK is relayed, the call setup is incomplete
because asterisk has dropped the call. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial;mso-no-proof:yes'>__________________________________________</span></font><span
style='mso-no-proof:yes'><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial;mso-no-proof:yes'>Salvatore Giudice</span></font><span
style='mso-no-proof:yes'><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial;mso-no-proof:yes'>617-392-1689</span></font><span
style='mso-no-proof:yes'><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial;mso-no-proof:yes'>617-392-8120</span></font><span
style='mso-no-proof:yes'><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial;mso-no-proof:yes'><a href="mailto:salvatore.giudice@fmr.com">salvatore.giudice@fmr.com</a></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
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