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<body class='hmmessage'><div dir='ltr'>- Check that forward and reverse DNS is working for ALL UC server FQDNs on your DNS server<br>- Have a look in CUCM Unified reporting and make sure you don't have any DB replication issues<br>- Look at the local voice network the phone is on; is it getting a DNS server that is able to resolve the FQDN of the UC servers?<br><br>Cheers,<br><br>-Ryan<br><br><div><hr id="stopSpelling">From: Edward.Countryman@PresenceHealth.org<br>To: cisco-voip@puck.nether.net<br>Date: Thu, 18 Jun 2015 18:58:30 +0000<br>Subject: [cisco-voip] calls to uccx trigger fail after enabling dns clients on cucm<br><br>
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<p class="ecxMsoNormal"><span style="color:#1F497D;">Hello, We’ve run into a very odd problem which I want to share and see if anyone might have any insight to share..</span></p>
<p class="ecxMsoNormal"> </p>
<p class="ecxMsoNormal">Let me describe the situation:</p>
<p class="ecxMsoNormal"> </p>
<p class="ecxMsoNormal">-New cucm 10.5.2 cluster, set up with DNS client enabled. (domain is:
<b>mycompanyname.net</b>)</p>
<p class="ecxMsoNormal">-New uccx 10.6.1 server (still in demo mode) setup and integrated with the new cucm cluster. DNS client enabled. (domain is:
<b>mycompanyname.net</b>)</p>
<p class="ecxMsoNormal"> </p>
<p class="ecxMsoNormal">When a phone (registered to new cucm cluster) calls a trigger on new uccx server it fails
<u>IF THE PHONE HAS</u> <b>mycompanyname.net</b> as the domain name indicated..</p>
<p class="ecxMsoNormal"> </p>
<p class="ecxMsoNormal">HOWEVER: if we change the domain name to something else, even something fake like BOGUS.NET, then calls complete normally.</p>
<p class="ecxMsoNormal"> </p>
<p class="ecxMsoNormal">I don’t understand what could be happening here, any ideas?</p>
<p class="ecxMsoNormal"><span style="color:#1F497D;"> </span></p>
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