<div>Any reasons/features why you wanted to SIP, usually cme is defined as an H.323 gateway on CM and CME uses standard VOIP (H.323) dial peers back to CM.</div>
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<div><span class="gmail_quote">On 6/20/08, <b class="gmail_sendername">Jason Aarons (US)</b> <<a href="mailto:jason.aarons@us.didata.com">jason.aarons@us.didata.com</a>> wrote:</span>
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<p>I have 3-4 smaller sites running CME 3.0 and a larger site with CallManager 6.1 BE. </p>
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<p>I was thinking of setting up SIP trunks between them with specific 4-digit extension route patterns.</p>
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<p>Any caveats (eg CME 3.0 version upgrade) with this? </p>
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<p>They have a lot of firewalls and I thought that H323 trunks might have issues with the firewalls.</p>
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<p>Should be Device Trunk in CallManager and SIPv2 dial-peers in CME 3.0.</p>
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<p>I assume this would work but never tried it, search on CCO didn't find this exact setup.</p>
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