Are you using IOS hardware conferencing, transcoding, or MTP?<div><br></div><div>In those cases I recommend upgrading IOS to something that supports the right "sccp ccm <> version <>" command. This way you get the best support for things like RFC2833 on your MTPs and Transcoders.</div>
<div><br></div><div>Otherwise I agree that the H.323 GWs themselves are mostly version independent for compatibility.</div><div><br></div><div>-Jason<br><br><div class="gmail_quote">On Mon, Apr 9, 2012 at 11:41 AM, Jorge L. Rodriguez Aguila <span dir="ltr"><<a href="mailto:jorge.rodriguez@netxar.com">jorge.rodriguez@netxar.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Cisco specifies some compatibility guidelines for h.323 devices within the CUCM Compatibility list, the reality is that an H.323 Gateway is a standalone device and h.323 is a standard so I would take a stab and say that as old as the IOS might be, 95% of all functions you might require will most likely work with your current IOS but the usual Leal caveat of Your mileage may vary is also included.<br>
<span class="HOEnZb"><font color="#888888"><br>
Jorge<br>
</font></span><div class="HOEnZb"><div class="h5"><br>
<br>
-----Original Message-----<br>
From: <a href="mailto:cisco-voip-bounces@puck.nether.net">cisco-voip-bounces@puck.nether.net</a> [mailto:<a href="mailto:cisco-voip-bounces@puck.nether.net">cisco-voip-bounces@puck.nether.net</a>] On Behalf Of Ki Wi<br>
Sent: Sunday, April 08, 2012 10:31 PM<br>
To: <a href="mailto:cisco-voip@puck.nether.net">cisco-voip@puck.nether.net</a><br>
Subject: [cisco-voip] Upgrading CM from 4.2 to 8.6 IOS upgrade required ?<br>
<br>
Customer is using h323.<br>
<br>
Unless MVA is required else can we leave the router in their original firmware ?<br>
<br>
Sent from my iPhone<br>
Pls pardon my fat fingers.<br>
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