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List: cisco-voip
Subject: RE: [cisco-voip] Re: cs3 instead of af31 in CM 3.3.4
From: "Carter, Bill" <bcarter () sentinel ! com>
Date: 2006-02-27 18:28:16
Message-ID: 6A0744639B86DD459433108DBF101D26E16D28 () MAIL01 ! sentinel ! com
[Download RAW message or body]
CS3 = AF24
IP Precedence 3 = 011
CS3 = 011000
AF24 = 011000
AF31 = 011010
AF32 = 011100
AF33 = 011110
In the IP Precedence world only the first 3 bits are used (0-2).
In the DSCP world six bits are used (0-5)
DSCP Class of Service uses six bits. First 3 define queuing class, and
the last 3 are 0 (3-5)
DSCP Assured Forward uses six bits. First 3 define queuing class (0-2),
last 3 define drop Precedence (3-5).
The last 3 bits signify drop preference.
XXX010 = Low Drop Probability
XXX100 = Medium Drop Probability
XXX110 = High Drop Probability
In the DSCP standard, Assured Forwarding (AF) has two parts, the first
defines queuing placement (bits 0-2), the second defines drop precedence
(bits 3-5). Class Selector (CS) only defines queuing placement (bits
0-2). The remaining 3 bits are left at 0 (bits 3-5).
Thus DSCP (CS and AF) supports backward compatibility for devices that
only support IP Precedence. Since the DSCP first 3 bits define class of
service which maps to IP Precedence classes. When a device not
supporting DSCP receives a packet with DSCP marking, it will read the
first 3 bits and treat the packet as if it was marked with IP
Precedence.
I can't find a statement on the drop preference of a packet marked with
a CS value and the last 3 drop bits set to 0 (011000). Under the AF
logic where "bigger-is worse" XXX000 should have a lower drop
preference than XXX010, XXX100, or XXX110. I don't know is this is how
network devices actually handle drop precedence is DCP.
I believe the standards bodies were suggesting CS3 for VoIP signaling
and Cisco was using AF31. Frankly AF31 seems more logical.
References:
RFCs 2474, 2475, 2597.
"IP Telephony Self-Study Cisco DQOS Exam Certification Guide" Cisco
Press. pages 114-129.
________________________________
From: cisco-voip-bounces@puck.nether.net
[mailto:cisco-voip-bounces@puck.nether.net] On Behalf Of Voll, Scott
Sent: Monday, February 27, 2006 10:42 AM
To: Matt Slaga (US)
Cc: Cisco VoIP
Subject: RE: [cisco-voip] Re: cs3 instead of af31 in CM 3.3.4
Negative Ghost Rider* in CM 4.1.3 the signaling is CS3. No
longer AF31. This is a known change.
Scott
*My favorite quote from Top Gun the movie.
________________________________
From: cisco-voip-bounces@puck.nether.net
[mailto:cisco-voip-bounces@puck.nether.net] On Behalf Of Matt Slaga (US)
Sent: Monday, February 27, 2006 8:32 AM
To: Voll, Scott; Wes Sisk
Cc: Cisco VoIP
Subject: RE: [cisco-voip] Re: cs3 instead of af31 in CM 3.3.4
I think this guy was trying to do the opposite, change the
default of DSCP af31 to CS3.
________________________________
From: cisco-voip-bounces@puck.nether.net
[mailto:cisco-voip-bounces@puck.nether.net] On Behalf Of Voll, Scott
Sent: Monday, February 27, 2006 11:15 AM
To: Wes Sisk
Cc: Cisco VoIP
Subject: RE: [cisco-voip] Re: cs3 instead of af31 in CM 3.3.4
Why did Cisco's default change from DSCP to CS? Are we going to
see these continue to change for all packets? Video, audio, etc.
Scott
________________________________
From: cisco-voip-bounces@puck.nether.net
[mailto:cisco-voip-bounces@puck.nether.net] On Behalf Of Wes Sisk
Sent: Sunday, February 26, 2006 10:09 AM
To: Waleed Samir
Cc: Cisco VoIP
Subject: [cisco-voip] Re: cs3 instead of af31 in CM 3.3.4
there is a setting in ccmadmin under service->service parameters
to changes the DSCP bits used for various signaling.
/Wes
On Feb 26, 2006, at 10:08 AM, Waleed Samir wrote:
Ok Thanks for your guiding
________________________________
From: Wes Sisk [mailto:wsisk@cisco.com]
Sent: Sunday, February 26, 2006 5:06 PM
To: Waleed Samir
Subject: Re: cs3 instead of af31 in CM 3.3.4
I'm sorry, i do not answer direct questions. If this is
regarding a TAC case please provide a number, otherwise, plese post your
question on the cisco-voip alias so everyone can benefit from the
answer.
Thank You,
/Wes
On Feb 25, 2006, at 7:35 PM, Waleed Samir wrote:
Hi
I need to change the setting of the Callmanager 3.3.4 to send
the signaling traffic with CS3 instead of the AF31 to follow the new
standard.
How can I make this change and do you have any documents or
links related to this subject.
Many Thanks
Waleed Samir
________________________________
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<DIV dir=ltr align=left><SPAN class=999264517-27022006><FONT face=Tahoma
size=2>CS3 = AF24</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=999264517-27022006><FONT face=Tahoma
size=2><SPAN class=999264517-27022006><FONT face=Tahoma
size=2></FONT></SPAN></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=999264517-27022006><FONT face=Tahoma
size=2><SPAN class=999264517-27022006><FONT face=Tahoma size=2>IP Precedence
3 = 011</FONT></SPAN></FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=999264517-27022006><FONT face=Tahoma
size=2>CS3 \
= 011000</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=999264517-27022006><FONT face=Tahoma
size=2>AF24 \
= 011000</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=999264517-27022006><FONT face=Tahoma
size=2>AF31 \
= 011010</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=999264517-27022006><SPAN
class=999264517-27022006><FONT face=Tahoma
size=2>AF32 \
= 011100</FONT></SPAN></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=999264517-27022006><SPAN
class=999264517-27022006>
<DIV dir=ltr align=left><SPAN class=999264517-27022006><SPAN
class=999264517-27022006><FONT face=Tahoma
size=2>AF33 \
= 011110</FONT></SPAN></SPAN></DIV></SPAN></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=999264517-27022006><FONT face=Tahoma
size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=999264517-27022006><FONT face=Tahoma
size=2>In the IP Precedence world only the first 3 bits are used
(0-2).</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=999264517-27022006><FONT face=Tahoma
size=2>In the DSCP world six bits are used (0-5)</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=999264517-27022006><FONT face=Tahoma
size=2>DSCP Class of Service uses six bits. First 3 define queuing class, and
the last 3 are 0 (3-5)</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=999264517-27022006><FONT face=Tahoma
size=2>DSCP Assured Forward uses six bits. First 3 define queuing class
(0-2), last 3 define drop Precedence (3-5).</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=999264517-27022006><FONT face=Tahoma
size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=999264517-27022006><FONT face=Tahoma
size=2>The last 3 bits signify drop preference.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=999264517-27022006><FONT face=Tahoma
size=2>XXX010 = Low Drop Probability</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=999264517-27022006><FONT face=Tahoma
size=2>XXX100 = Medium Drop Probability</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=999264517-27022006><FONT face=Tahoma
size=2>XXX110 = High Drop Probability</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=999264517-27022006><FONT face=Tahoma
size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=999264517-27022006><FONT face=Tahoma
size=2>In the DSCP standard, Assured Forwarding (AF) has two parts, the first
defines queuing placement (bits 0-2), the second defines drop precedence
(bits 3-5).</FONT> <FONT face=Tahoma size=2> Class Selector (CS) only
defines queuing placement (bits 0-2). The remaining 3 bits are left at 0
(bits 3-5).</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=999264517-27022006><FONT face=Tahoma
size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=999264517-27022006><FONT face=Tahoma
size=2>Thus DSCP (CS and AF) supports backward compatibility for devices
that only support IP Precedence. Since the DSCP first 3 bits define class
of service which maps to IP Precedence classes. When a device not
supporting DSCP receives a packet with DSCP marking, it will read the first 3
bits and treat the packet as if it was marked with IP
Precedence.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=999264517-27022006><FONT face=Tahoma
size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=999264517-27022006><FONT face=Tahoma
size=2>I can't find a statement on the drop preference of a packet marked with a
CS value and the last 3 drop bits set to 0 (011000). Under the AF logic
where "bigger-is worse" XXX000 should have a lower drop preference than
XXX010, XXX100, or XXX110. I don't know is this is how network devices
actually handle drop precedence is DCP.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=999264517-27022006><FONT face=Tahoma
size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=999264517-27022006><FONT face=Tahoma
size=2>I believe the standards bodies were suggesting CS3 for VoIP signaling and
Cisco was using AF31. Frankly AF31 seems more
logical. </FONT></SPAN></DIV>
<DIV> </DIV>
<DIV><FONT face=Tahoma size=2></FONT> </DIV>
<DIV><SPAN class=999264517-27022006><FONT face=Tahoma size=2>References:
</FONT></SPAN></DIV>
<DIV><SPAN class=999264517-27022006><FONT face=Tahoma size=2>RFCs 2474, 2475,
2597.</FONT></SPAN></DIV>
<DIV><SPAN class=999264517-27022006><FONT face=Tahoma size=2>"IP Telephony
Self-Study Cisco DQOS Exam Certification Guide" Cisco Press. pages
114-129.</FONT></SPAN></DIV>
<DIV><SPAN class=999264517-27022006><FONT face=Tahoma
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=999264517-27022006></SPAN> </DIV>
<DIV><BR></DIV>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> cisco-voip-bounces@puck.nether.net
[mailto:cisco-voip-bounces@puck.nether.net] <B>On Behalf Of </B>Voll,
Scott<BR><B>Sent:</B> Monday, February 27, 2006 10:42 AM<BR><B>To:</B> Matt
Slaga (US)<BR><B>Cc:</B> Cisco VoIP<BR><B>Subject:</B> RE: [cisco-voip] Re:
cs3 instead of af31 in CM 3.3.4<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV class=Section1>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Negative Ghost Rider*
in CM 4.1.3 the signaling is CS3. No longer AF31. This is a known
change.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: \
Arial"><o:p> </o:p></SPAN></FONT></P> <P class=MsoNormal><FONT face=Arial \
color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: \
Arial">Scott<o:p></o:p></SPAN></FONT></P> <P class=MsoNormal><FONT face=Arial \
color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: \
Arial"><o:p> </o:p></SPAN></FONT></P> <P class=MsoNormal><FONT face=Arial \
color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: \
Arial">*My favorite quote from Top Gun the movie.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: \
Arial"><o:p> </o:p></SPAN></FONT></P> <DIV>
<DIV class=MsoNormal style="TEXT-ALIGN: center" align=center><FONT
face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt">
<HR tabIndex=-1 align=center width="100%" SIZE=2>
</SPAN></FONT></DIV>
<P class=MsoNormal><B><FONT face=Tahoma size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: \
Tahoma">From:</SPAN></FONT></B><FONT face=Tahoma size=2><SPAN style="FONT-SIZE: \
10pt; FONT-FAMILY: Tahoma"> cisco-voip-bounces@puck.nether.net \
[mailto:cisco-voip-bounces@puck.nether.net] <B><SPAN style="FONT-WEIGHT: bold">On \
Behalf Of </SPAN></B>Matt Slaga (US)<BR><B><SPAN style="FONT-WEIGHT: \
bold">Sent:</SPAN></B> Monday, February 27, 2006 8:32 AM<BR><B><SPAN \
style="FONT-WEIGHT: bold">To:</SPAN></B> Voll, Scott; Wes Sisk<BR><B><SPAN \
style="FONT-WEIGHT: bold">Cc:</SPAN></B> Cisco VoIP<BR><B><SPAN style="FONT-WEIGHT: \
bold">Subject:</SPAN></B> RE: [cisco-voip] Re: cs3 instead of af31 in CM
3.3.4</SPAN></FONT><o:p></o:p></P></DIV>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=blue size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial">I think this guy was
trying to do the opposite, change the default of DSCP af31 to
CS3.</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P>
<DIV class=MsoNormal style="TEXT-ALIGN: center" align=center><FONT
face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt">
<HR tabIndex=-1 align=center width="100%" SIZE=2>
</SPAN></FONT></DIV>
<P class=MsoNormal style="MARGIN-BOTTOM: 12pt"><B><FONT face=Tahoma
size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: \
Tahoma">From:</SPAN></FONT></B><FONT face=Tahoma size=2><SPAN style="FONT-SIZE: \
10pt; FONT-FAMILY: Tahoma"> cisco-voip-bounces@puck.nether.net \
[mailto:cisco-voip-bounces@puck.nether.net] <B><SPAN style="FONT-WEIGHT: bold">On \
Behalf Of </SPAN></B>Voll, Scott<BR><B><SPAN style="FONT-WEIGHT: \
bold">Sent:</SPAN></B> Monday, February 27, 2006 11:15 AM<BR><B><SPAN \
style="FONT-WEIGHT: bold">To:</SPAN></B> Wes Sisk<BR><B><SPAN style="FONT-WEIGHT: \
bold">Cc:</SPAN></B> Cisco VoIP<BR><B><SPAN style="FONT-WEIGHT: \
bold">Subject:</SPAN></B> RE: [cisco-voip] Re: cs3 instead of af31 in CM \
3.3.4</SPAN></FONT><o:p></o:p></P> <P class=MsoNormal><FONT face=Arial color=navy \
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Why did \
Cisco’s default change from DSCP to CS? Are we going to see these \
continue to change for all packets? Video, audio, \
etc.<o:p></o:p></SPAN></FONT></P> <P class=MsoNormal><FONT face=Arial color=navy \
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: \
Arial"><o:p> </o:p></SPAN></FONT></P> <P class=MsoNormal><FONT face=Arial \
color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: \
Arial">Scott<o:p></o:p></SPAN></FONT></P> <P class=MsoNormal><FONT face=Arial \
color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: \
Arial"><o:p> </o:p></SPAN></FONT></P> <DIV>
<DIV class=MsoNormal style="TEXT-ALIGN: center" align=center><FONT
face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt">
<HR tabIndex=-1 align=center width="100%" SIZE=2>
</SPAN></FONT></DIV>
<P class=MsoNormal><B><FONT face=Tahoma size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: \
Tahoma">From:</SPAN></FONT></B><FONT face=Tahoma size=2><SPAN style="FONT-SIZE: \
10pt; FONT-FAMILY: Tahoma"> cisco-voip-bounces@puck.nether.net \
[mailto:cisco-voip-bounces@puck.nether.net] <B><SPAN style="FONT-WEIGHT: bold">On \
Behalf Of </SPAN></B>Wes Sisk<BR><B><SPAN style="FONT-WEIGHT: \
bold">Sent:</SPAN></B> Sunday, February 26, 2006 10:09 AM<BR><B><SPAN \
style="FONT-WEIGHT: bold">To:</SPAN></B> Waleed Samir<BR><B><SPAN \
style="FONT-WEIGHT: bold">Cc:</SPAN></B> Cisco VoIP<BR><B><SPAN style="FONT-WEIGHT: \
bold">Subject:</SPAN></B> [cisco-voip] Re: cs3 instead of af31 in CM \
3.3.4</SPAN></FONT><o:p></o:p></P></DIV> <P class=MsoNormal><FONT face="Times New \
Roman" size=3><SPAN style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt">there is a setting in ccmadmin under
service->service parameters to changes the DSCP bits used for various
signaling.<o:p></o:p></SPAN></FONT></P>
<DIV>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt">/Wes<o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P>
<DIV>
<DIV>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt">On Feb 26, 2006, at 10:08 AM, Waleed Samir
wrote:<o:p></o:p></SPAN></FONT></P></DIV>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"><BR><BR><BR></SPAN></FONT><SPAN
class=apple-style-span><O:SMARTTAGTYPE
namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="PersonName"
downloadurl="http://www.microsoft.com"><FONT face=Helvetica color=black
size=4><SPAN
style="FONT-SIZE: 13.5pt; COLOR: black; FONT-FAMILY: \
Helvetica"><o:p></o:p></SPAN></FONT></SPAN></P> <DIV><SPAN
style="WORD-SPACING: 0px; border-spacing: 0px 0px; \
khtml-text-decorations-in-effect: none; apple-text-size-adjust: auto; orphans: 2; \
widows: 2"> <P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
class=apple-style-span><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Ok Thanks for your
guiding<o:p></o:p></SPAN></FONT></SPAN></P>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
class=apple-style-span><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></SPAN></P>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
class=apple-style-span><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></SPAN></P>
<DIV>
<DIV class=MsoNormal style="TEXT-ALIGN: center" align=center><FONT
face="Times New Roman" color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black">
<HR tabIndex=-1 align=center width="100%" SIZE=2>
</SPAN></FONT></DIV>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
class=apple-style-span><B><FONT face=Tahoma color=black size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: \
Tahoma">From:</SPAN></FONT></B></SPAN><SPAN class=apple-style-span><FONT \
face=Tahoma color=black size=2><SPAN style="FONT-SIZE: 10pt; COLOR: black; \
FONT-FAMILY: Tahoma"> Wes Sisk [<A \
href="mailto:wsisk@cisco.com">mailto:wsisk@cisco.com</A>] \
</SPAN></FONT></SPAN><FONT face=Tahoma color=black size=2><SPAN style="FONT-SIZE: \
10pt; COLOR: black; FONT-FAMILY: Tahoma"><BR><SPAN class=apple-style-span><B><SPAN \
style="FONT-WEIGHT: bold">Sent:</SPAN></B> Sunday, February 26, 2006 5:06 \
PM</SPAN><BR><SPAN class=apple-style-span><B><SPAN style="FONT-WEIGHT: \
bold">To:</SPAN></B> <ST1:PERSONNAME u1:st="on">Waleed \
Samir</ST1:PERSONNAME></SPAN><BR><SPAN class=apple-style-span><B><SPAN \
style="FONT-WEIGHT: bold">Subject:</SPAN></B> Re: cs3 instead of af31 in CM \
3.3.4</SPAN></SPAN></FONT><o:p></o:p></P></DIV> <P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
class=apple-style-span><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></SPAN></P>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
class=apple-style-span><FONT face="Times New Roman" color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black">I'm sorry, i do not answer direct
questions. If this is regarding a TAC case please provide a number,
otherwise, plese post your question on the cisco-voip alias so everyone can
benefit from the answer.<o:p></o:p></SPAN></FONT></SPAN></P>
<DIV>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
class=apple-style-span><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></SPAN></P></DIV>
<DIV>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
class=apple-style-span><FONT face="Times New Roman" color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black">Thank
You,<o:p></o:p></SPAN></FONT></SPAN></P></DIV>
<DIV>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
class=apple-style-span><FONT face="Times New Roman" color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: \
black">/Wes<o:p></o:p></SPAN></FONT></SPAN></P></DIV> <DIV>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
class=apple-style-span><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></SPAN></P>
<DIV>
<DIV>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
class=apple-style-span><FONT face="Times New Roman" color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black">On Feb 25, 2006, at 7:35 PM,
<ST1:PERSONNAME u1:st="on">Waleed Samir</ST1:PERSONNAME>
wrote:<o:p></o:p></SPAN></FONT></SPAN></P></DIV>
<P class=MsoNormal style="MARGIN-BOTTOM: 12pt; mso-margin-top-alt: auto"><FONT
face="Times New Roman" color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black"><BR><BR></SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P><O:SMARTTAGTYPE
namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="PersonName">
<DIV></O:SMARTTAGTYPE>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
class=apple-style-span><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><SPAN
style="WORD-SPACING: 0px; border-spacing: 0px 0px; \
khtml-text-decorations-in-effect: none; apple-text-size-adjust: auto; orphans: 2; \
widows: 2">Hi<o:p></o:p></SPAN></FONT></SPAN></P> <P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
class=apple-style-span><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></SPAN></P>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
class=apple-style-span><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">I need to change the
setting of the Callmanager 3.3.4 to send the signaling traffic with CS3
instead of the AF31 to follow the new
standard.<o:p></o:p></SPAN></FONT></SPAN></P>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
class=apple-style-span><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">How can I make this
change and do you have any documents or links related to this
subject.<o:p></o:p></SPAN></FONT></SPAN></P>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
class=apple-style-span><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Many
Thanks<o:p></o:p></SPAN></FONT></SPAN></P>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><ST1:PERSONNAME
u2:st="on"><ST1:PERSONNAME u1:st="on"><SPAN class=apple-style-span><FONT
face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Waleed
Samir</SPAN></FONT></SPAN></ST1:PERSONNAME></ST1:PERSONNAME><FONT
color=black><SPAN style="COLOR: black"><o:p></o:p></SPAN></FONT></P></DIV>
<P class=MsoNormal style="MARGIN-BOTTOM: 12pt; mso-margin-top-alt: auto"><FONT
face=Helvetica color=black size=4><SPAN
style="FONT-SIZE: 13.5pt; COLOR: black; FONT-FAMILY: \
Helvetica"><BR><BR></SPAN></FONT><FONT color=black><SPAN style="COLOR: \
black"><o:p></o:p></SPAN></FONT></P></DIV> <P class=MsoNormal><FONT face="Times New \
Roman" size=3><SPAN style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><FONT
face="Times New Roman" color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: \
black"><o:p> </o:p></SPAN></FONT></P></DIV></DIV></SPAN> <P class=MsoNormal \
style="MARGIN-BOTTOM: 12pt"><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"></O:SMARTTAGTYPE><o:p> </o:p></SPAN></FONT></P></DIV>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"></SPAN><o:p> </o:p></SPAN></FONT></P></DIV>
<DIV class=MsoNormal style="TEXT-ALIGN: center" align=center><FONT
face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt">
<HR align=center width="100%" SIZE=1>
</SPAN></FONT></DIV>
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