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<p class=MsoNormal><span lang=EN-US style='color:#1F497D'>Hi All, <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:#1F497D'>Regarding this issue,
it has been solved after entering the global config command:<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";
color:black'>no ip nat service sip udp port 5060</span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:#1F497D'>It is acting like an ios
fixup for SIP => The ATA internal addresses are hidden in the SDP, avoiding the
registration problems.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:#1F497D'>Thanks & king regards.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:#1F497D'>Karim<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>De :</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
cisco-voip-bounces@puck.nether.net [mailto:cisco-voip-bounces@puck.nether.net] <b>De
la part de</b> Karim Rahmani<br>
<b>Envoyé :</b> Monday, April 06, 2009 6:49 PM<br>
<b>À :</b> cisco-voip@puck.nether.net<br>
<b>Objet :</b> [cisco-voip] ATA using SIP with NAT/Registration problem /
SIP 406Not Acceptable<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span lang=EN-US>Hi everyone, <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>I have a little issue with one of my
customers: Since some months they are using NAT with a Cisco7301 router
in order to translate ATA ip addresses from an internal network to a public
address (PAT is used). These ATA are registering to an external SIP server
according to this scenario:<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif"'>ATA-----------Cisco7301_with_NAT_(LNS)------------Sip_Server</span><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>The strange thing is that it was working
properly during many months but when the number of the registered ATA boxes
reached 42, some problems has been met => The ATA boxes could not
automatically register although there is an entry in the translation table for
these ATA.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>The only way to make new ATA box to
register is deleting its entry in the nat table and reboot it.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span lang=EN-US>The
‘debug ip nat sip’ let us think the NAT is done correctly and in a
wireshark capture we can see SIP 406 Not Acceptable answers to the registration
request.<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span lang=EN-US>SIP 406 Not
Acceptable :<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span lang=EN-US
style='font-size:9.0pt;font-family:"Courier New"'>This response indicates that the
requested resource is capable of generating only responses that have content
characteristics not acceptable as specified in the accept header of the
request. The SIP gateway does not generate this response. After receiving this
response, the gateway initiates a graceful call disconnect and clears the call.<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span lang=EN-US
style='font-size:8.0pt;font-family:"Z\@R1ECE\.tmp"'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Do you know if there is any restriction or
limitation regarding the number of SIP sessions supported by the NAT? I made
some bugs researches but I did not manage to hit one?<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>I think I will open a TAC case but if
someone has ever met this symptom it would be great. If not I will share the
TAC case conclusion if we fix this issue.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>7301 IOS is
c7301-spservicesk9-mz.124-15.T4.bin<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Thank you very much for your ideas.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><b><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";color:gray'>K. Rahmani</span></b><br>
<span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:gray'>Support
Client , Telindus France<br>
10 , avenue de Norvège , ZA de Courtaboeuf 1 BP 742</span><b><br>
</b><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:gray'>91962 Les Ulis cedex France</span></b><u><br>
</u><a href="blocked::BLOCKED::mailto:karim.rahmani@telindus.fr"><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Mailto:karim.rahmani@telindus.fr</span></a><b><br>
</b><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Telindus.
Change things your way.</span></b> <a
href="blocked::BLOCKED::http://www.telindus.fr/"><span style='font-size:10.0pt;
font-family:"Arial","sans-serif"'>http://www.telindus.fr</span></a><o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
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