<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">The point of a TRP or MTP will be to anchor the RTP stream to a known IP address for NAT purposes. The port range will still be wide open as you stated, but the IP address will be known (so you can do NAT and not PAT).<div><br><div>
<span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div>-Ryan</div></span>
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<br><div><div>On Jun 2, 2011, at 11:03 AM, Damian Turburville wrote:</div><br class="Apple-interchange-newline"><span class="Apple-style-span" style="border-collapse: separate; font-family: 'Lucida Grande'; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font-family: 'times new roman', 'new york', times, serif; font-size: 12pt; ">I am probably being thick here but will the phones not try and establish an RTP connection between themselves which could be on a wide range of ports?<span class="Apple-converted-space"> </span><br>Damian<br><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font-family: 'times new roman', 'new york', times, serif; font-size: 12pt; "><br><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font-family: 'times new roman', 'new york', times, serif; font-size: 12pt; "><font size="2" face="Tahoma"><hr size="1"><b><span style="font-weight: bold; ">From:</span></b><span class="Apple-converted-space"> </span>Ryan Ratliff <<a href="mailto:rratliff@cisco.com">rratliff@cisco.com</a>><br><b><span style="font-weight: bold; ">To:</span></b><span class="Apple-converted-space"> </span>Paul <<a href="mailto:asobihoudai@yahoo.com">asobihoudai@yahoo.com</a>><br><b><span style="font-weight: bold; ">Cc:</span></b><span class="Apple-converted-space"> </span>Damian Turburville <<a href="mailto:d_turburville@yahoo.com">d_turburville@yahoo.com</a>>; "<a href="mailto:cisco-voip@puck.nether.net">cisco-voip@puck.nether.net</a>" <<a href="mailto:cisco-voip@puck.nether.net">cisco-voip@puck.nether.net</a>><br><b><span style="font-weight: bold; ">Sent:</span></b><span class="Apple-converted-space"> </span>Tue, May 31, 2011 9:35:37 PM<br><b><span style="font-weight: bold; ">Subject:</span></b><span class="Apple-converted-space"> </span>Re: [cisco-voip] Connecting to third party CUCM via ICT trunk<br></font><br>IME is quite the complex solution for sites that are already connected. Using an ICT will be the way to go. <div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">If firewalls traversal is required then TRPs or MTPs should be sufficient. ICTs use H.323 as far as firewalls are concerned.</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><br><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><span class="Apple-style-span" style="border-collapse: separate; font-family: Helvetica; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; "><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">-Ryan</div></span></div><br><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">On May 31, 2011, at 10:59 AM, Paul wrote:</div><br class="Apple-interchange-newline"><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">I would suggest you upgrade and use IME which was created for this exact purpose...but that's obviously not the answer you were looking for. . .<br><br><br>________________________________<br>From: Damian Turburville <<a rel="nofollow" ymailto="mailto:d_turburville@yahoo.com" target="_blank" href="mailto:d_turburville@yahoo.com">d_turburville@yahoo.com</a>><br>To:<span class="Apple-converted-space"> </span><a rel="nofollow" ymailto="mailto:cisco-voip@puck.nether.net" target="_blank" href="mailto:cisco-voip@puck.nether.net">cisco-voip@puck.nether.net</a><br>Sent: Tuesday, May 31, 2011 7:30 AM<br>Subject: [cisco-voip] Connecting to third party CUCM via ICT trunk<br><br><br>Hi,<br>I am looking for some advice. I have a CUCM 6.1 system at one of my sites and we have a third-party who is on our WAN (but controls their own LAN and servers etc) who also has a Call Manager (not sure what revision) and they would like to make calls between the two sites. I was thinking it would probably be fairly easy to setup an ICT trunk between the two systems but I am sure our security team would have some issues with that. Is there any way of making the trunk more secure? Locking down ports on the firewall etc, maybe some kind of VPN connection? Is there anyone out there that has done this that could share their experiences?<br>Many thanks,<br>Damian<br><br>_______________________________________________<br>cisco-voip mailing list<br><a rel="nofollow" ymailto="mailto:cisco-voip@puck.nether.net" target="_blank" href="mailto:cisco-voip@puck.nether.net">cisco-voip@puck.nether.net</a><br><span><a target="_blank" href="https://puck.nether.net/mailman/listinfo/cisco-voip">https://puck.nether.net/mailman/listinfo/cisco-voip</a></span><br>_______________________________________________<br>cisco-voip mailing list<br><a href="mailto:cisco-voip@puck.nether.net">cisco-voip@puck.nether.net</a><br><span><a target="_blank" href="https://puck.nether.net/mailman/listinfo/cisco-voip">https://puck.nether.net/mailman/listinfo/cisco-voip</a></span><br></div></div><br></div></div></div></div></div></span><br class="Apple-interchange-newline"></div><br></div></body></html>