<div>Dear All,</div>
<div> </div>
<div> </div>
<div>I have 2 IP-phones connected to C2621 with the below configuration the problem that, the phones used <a href="http://10.0.0.25">10.0.0.25</a> and <a href="http://10.0.0.26">10.0.0.26</a> and both is NATED on the 2600 router, also both registered in international SIP server but thay can not make calls even between each other, But when i trying to using static NAT (Private--> Real IP) everything working fine but i can not deticate IP for each phone and now the problem due to NAT so anybody could help in that, HOw can i use NAT but in the same time the phones working because it's seems that the NAT port changes it the reason behind the problem
</div>
<div> </div>
<div>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">Seef-HQ#sh run</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">Building configuration...</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman"> </font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">Current configuration : 1596 bytes</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">!</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">version 12.3</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">service timestamps debug datetime msec</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">service timestamps log datetime msec</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">service password-encryption</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">!</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">hostname Seef-HQ</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">!</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">logging buffered 4096 debugging</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">enable secret 5 $1</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">!</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">ip subnet-zero</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">ip cef</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">!</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">!</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">ip name-server <a href="http://195.219.14.20">195.219.14.20</a></font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">ip name-server <a href="http://64.85.63.6">64.85.63.6</a></font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">!</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">!</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">!</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">voice rtp send-recv</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">!</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">voice service voip </font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman"><span style="mso-spacerun: yes"> </span>sip</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">!</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">voice class codec 1</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman"><span style="mso-spacerun: yes"> </span>codec preference 1 g711ulaw</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">!</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">!</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">!</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">!</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">!</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">!</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">!</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">no voice hpi capture buffer</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">no voice hpi capture destination </font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">!</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">!</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">!</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">!<span style="mso-spacerun: yes"> </span></font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">!<span style="mso-spacerun: yes"> </span></font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">!<span style="mso-spacerun: yes"> </span></font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">interface FastEthernet0/0</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman"><span style="mso-spacerun: yes"> </span>ip address 217.X.X.X <a href="http://255.255.255.240">255.255.255.240</a></font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman"><span style="mso-spacerun: yes"> </span>ip nat outside</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman"><span style="mso-spacerun: yes"> </span>duplex auto</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman"><span style="mso-spacerun: yes"> </span>speed auto</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">!<span style="mso-spacerun: yes"> </span></font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">interface FastEthernet0/1</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman"><span style="mso-spacerun: yes"> </span>ip address <a href="http://10.0.0.1">10.0.0.1</a> <a href="http://255.255.255.0">255.255.255.0</a></font>
</p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman"><span style="mso-spacerun: yes"> </span>ip nat inside</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman"><span style="mso-spacerun: yes"> </span>duplex auto</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman"><span style="mso-spacerun: yes"> </span>speed auto</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">!<span style="mso-spacerun: yes"> </span></font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">ip nat pool LAN 217.X.X.X 217.X.X.X prefix-length 28</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">ip nat inside source list 10 pool LAN overload</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">ip nat inside source static tcp <a href="http://10.0.0.113">10.0.0.113</a> 80 interface FastEthernet0/0 9999</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">ip nat inside source static <a href="http://10.0.0.4">10.0.0.4</a> 217.X.X.Y</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">ip nat inside source static <a href="http://10.0.0.3">10.0.0.3</a> 217.X.X.Z</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">ip http server</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">ip classless</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">ip route <a href="http://0.0.0.0">0.0.0.0</a> <a href="http://0.0.0.0">0.0.0.0</a> 217.X.X.X</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">!<span style="mso-spacerun: yes"> </span></font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">!<span style="mso-spacerun: yes"> </span></font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">access-list 10 permit <a href="http://10.0.0.0">10.0.0.0</a> <a href="http://0.0.0.255">0.0.0.255</a></font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">!<span style="mso-spacerun: yes"> </span></font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">!<span style="mso-spacerun: yes"> </span></font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">!<span style="mso-spacerun: yes"> </span></font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">!<span style="mso-spacerun: yes"> </span></font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">!<span style="mso-spacerun: yes"> </span></font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">!<span style="mso-spacerun: yes"> </span></font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">dial-peer voice 1 voip</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman"><span style="mso-spacerun: yes"> </span>session protocol sipv2</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman"><span style="mso-spacerun: yes"> </span>session target ipv4:67.X.X.X</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman"><span style="mso-spacerun: yes"> </span>session transport udp</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">!<span style="mso-spacerun: yes"> </span></font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">sip-ua<span style="mso-spacerun: yes"> </span></font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman"><span style="mso-spacerun: yes"> </span>nat symmetric role active</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman"><span style="mso-spacerun: yes"> </span>nat symmetric check-media-src</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman"><span style="mso-spacerun: yes"> </span>retry invite 2</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman"><span style="mso-spacerun: yes"> </span>retry response 2</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman"><span style="mso-spacerun: yes"> </span>retry bye 2</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman"><span style="mso-spacerun: yes"> </span>retry cancel 2</font></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman"><span style="mso-spacerun: yes"> </span>sip-server ipv4:67.X.X.X</font></p><br clear="all"><br>-- <br>Best Reagrds,<br>Mounir Mohamed </div>