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<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Hi<?xml:namespace prefix = o ns =
"urn:schemas-microsoft-com:office:office" /><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Pls. help us in resolving the
problem that the SIP proxy server changes the Source and Destination port while
replying for message. Pls. find the below message for the Reference In below
message A cisco ata device (which is behind NAT with IP 192.168.10.52) is trying
to register it self with SIP proxy server IP 172.16.101.10 with SRC port 5060
and DST port 5060, but when SIP proxy server replies back to the message the
port number gets changed i.e <B><SPAN style="FONT-WEIGHT: bold">SRC port
53492</SPAN></B> and DST port 5060. Is there any way by which we can fix this
port num.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<DIV class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">No.
Time
Source
Destination Protocol
Info<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">532 152.672945
172.16.101.251
172.16.101.10
SIP Request: REGISTER
sip:172.16.101.10<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p></o:p></SPAN></FONT> </DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT><FONT
face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Frame 532
(469 bytes on wire, 469 bytes captured)<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Arrival Time:
Nov 3, 2005 11:32:02.280623000<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Time delta from
previous packet: 0.007492000 seconds<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Time since
reference or first frame: 152.672945000 seconds<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Frame Number:
532<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Packet Length:
469 bytes<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Capture Length:
469 bytes<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Protocols in
frame: eth:ip:udp:sip<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Ethernet II, Src: Cisco_b5:15:f0
(00:04:c1:b5:15:f0), Dst: Dell_17:ea:82
(00:14:22:17:ea:82)<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Destination:
Dell_17:ea:82 (00:14:22:17:ea:82)<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Source:
Cisco_b5:15:f0 (00:04:c1:b5:15:f0)<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Type: IP
(0x0800)<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Internet Protocol, Src:
172.16.101.251 (172.16.101.251), Dst: 172.16.101.10
(172.16.101.10)<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Version:
4<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Header length: 20
bytes<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Differentiated
Services Field: 0x68 (DSCP 0x1a: Assured Forwarding 31; ECN:
0x00)<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
0110 10.. = Differentiated Services Codepoint: Assured Forwarding 31
(0x1a)<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
.... ..0. = ECN-Capable Transport (ECT): 0<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
.... ...0 = ECN-CE: 0<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Total Length:
455<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Identification:
0x01f8 (504)<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Flags:
0x00<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
0... = Reserved bit: Not set<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
.0.. = Don't fragment: Not set<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
..0. = More fragments: Not set<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Fragment offset:
0<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Time to live:
249<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Protocol: UDP
(0x11)<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Header checksum:
0x1e63 [correct]<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Source:
172.16.101.251 (172.16.101.251)<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Destination:
<B><SPAN style="FONT-WEIGHT: bold">172.16.101.10
(172.16.101.10)</SPAN></B><o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">User Datagram Protocol,
<?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags"
/><st1:PlaceName w:st="on"><B><SPAN
style="FONT-WEIGHT: bold">Src</SPAN></B></st1:PlaceName><B><SPAN
style="FONT-WEIGHT: bold"> <st1:PlaceType w:st="on">Port</st1:PlaceType>: 5060
(5060), <st1:place w:st="on"><st1:PlaceName w:st="on">Dst</st1:PlaceName>
<st1:PlaceType w:st="on">Port</st1:PlaceType></st1:place>: 5060
(5060)</SPAN></B><o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Source port: 5060
(5060)<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Destination port:
5060 (5060)<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Length:
435<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Checksum: 0x6c94
[correct]<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Session Initiation
Protocol<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Request-Line:
REGISTER sip:172.16.101.10 SIP/2.0<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
Method: REGISTER<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
Resent Packet: True<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
Suspected resend of frame: 34<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Message
Header<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
Via: SIP/2.0/UDP
192.168.10.52:5060;branch=z9hG4bK9749dfca14c0ffb2<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
From: 23456
<sip:23456@172.16.101.10;user=phone>;tag=2971075767<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
SIP Display info: 23456 <o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
SIP from address: sip:23456@172.16.101.10<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
SIP tag: 2971075767<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
To: 23456
<sip:23456@172.16.101.10;user=phone><o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
SIP Display info: 23456 <o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
SIP to address: sip:23456@172.16.101.10<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
Call-ID: 3431569068@192.168.10.52<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
CSeq: 1 REGISTER<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
Contact: 23456
<sip:23456@192.168.10.52:5060;user=phone;transport=udp>;expires=300<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
Contact Binding: 23456
<sip:23456@192.168.10.52:5060;user=phone;transport=udp>;expires=300<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
URI: 23456
<sip:23456@192.168.10.52:5060;user=phone;transport=udp><o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
SIP Display info: 23456 <o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
SIP contact address: sip:23456@192.168.10.52:5060<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
User-Agent: Cisco ATA 186 v3.2.1 atasip
(050616A)<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
Content-Length: 0<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">No.
Time
Source
Destination
Protocol Info<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> 533
152.674292 172.16.101.10
172.16.101.251
SIP Status: 401 Unauthorized (0
bindings)<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Frame 533 (432 bytes on wire, 432
bytes captured)<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Arrival Time:
Nov 3, 2005 11:32:02.281970000<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Time delta from
previous packet: 0.001347000 seconds<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Time since
reference or first frame: 152.674292000 seconds<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Frame Number:
533<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Packet Length:
432 bytes<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Capture Length:
432 bytes<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Protocols in
frame: eth:ip:udp:sip<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Ethernet II, Src: Dell_17:ea:82
(00:14:22:17:ea:82), Dst: Cisco_b5:15:f0
(00:04:c1:b5:15:f0)<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Destination:
Cisco_b5:15:f0 (00:04:c1:b5:15:f0)<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Source:
Dell_17:ea:82 (00:14:22:17:ea:82)<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Type: IP
(0x0800)<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Internet Protocol, Src:
172.16.101.10 (172.16.101.10), Dst: 172.16.101.251
(172.16.101.251)<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Version:
4<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Header length: 20
bytes<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Differentiated
Services Field: 0x60 (DSCP 0x18: Class Selector 3; ECN:
0x00)<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
0110 00.. = Differentiated Services Codepoint: Class Selector 3
(0x18)<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
.... ..0. = ECN-Capable Transport (ECT): 0<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
.... ...0 = ECN-CE: 0<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Total Length:
418<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Identification:
0x0000 (0)<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Flags: 0x04
(Don't Fragment)<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
0... = Reserved bit: Not set<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
.1.. = Don't fragment: Set<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
..0. = More fragments: Not set<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Fragment offset:
0<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Time to live:
64<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Protocol: UDP
(0x11)<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Header checksum:
0x9988 [correct]<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Source: <B><SPAN
style="FONT-WEIGHT: bold">172.16.101.10
(172.16.101.10)</SPAN></B><o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Destination:
172.16.101.251 (172.16.101.251)<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">User Datagram Protocol,
<st1:PlaceName w:st="on"><B><SPAN
style="FONT-WEIGHT: bold">Src</SPAN></B></st1:PlaceName><B><SPAN
style="FONT-WEIGHT: bold"> <st1:PlaceType w:st="on">Port</st1:PlaceType>: 53492
(53492), <st1:place w:st="on"><st1:PlaceName w:st="on">Dst</st1:PlaceName>
<st1:PlaceType w:st="on">Port</st1:PlaceType></st1:place>: 5060
(5060)</SPAN></B><o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Source port:
53492 (53492)<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Destination port:
5060 (5060)<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Length:
398<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Checksum: 0x0ad1
[correct]<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Session Initiation
Protocol<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Status-Line:
SIP/2.0 401 Unauthorized<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
Status-Code: 401<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
Resent Packet: True<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
Suspected resend of frame: 480<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Message
Header<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
Via: SIP/2.0/UDP
192.168.10.52:5060;received=172.16.101.251;branch=z9hG4bK9749dfca14c0ffb2<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
Call-ID: 3431569068@192.168.10.52<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
From: 23456
<sip:23456@172.16.101.10;user=phone>;tag=2971075767<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
SIP Display info: 23456 <o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
SIP from address: sip:23456@172.16.101.10<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
SIP tag: 2971075767<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
To: 23456
<sip:23456@172.16.101.10;user=phone><o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
SIP Display info: 23456
<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
SIP to address: sip:23456@172.16.101.10<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
CSeq: 1 REGISTER<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
WWW-Authenticate: DIGEST realm="CISCO", nonce="4369a82d", qop="auth",
algorithm=MD5<o:p></o:p></SPAN></FONT></DIV>
<DIV class=MsoNormal align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
Content-Length: 0<o:p></o:p></SPAN></FONT></DIV></FONT>
<DIV align=left> </DIV>
<DIV align=left><SPAN class=064291609-03112005><FONT face=Arial size=2>Ritesh
Jalan</FONT></SPAN></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV></BODY></HTML>