<div dir="ltr">Thanks!... looks like I have some more reading to do... so how does it prevent anyone from sending a pstn number to my expressway? How does it authenticate the Webex devices to pass calls to CUCM for?<div><br></div><div>Customer has enterprise licensing, so they should be able to do whatever they want...</div><div><br></div><div><br></div><div>Jonathan</div><div><br></div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, May 15, 2019 at 6:16 PM Ryan Huff <<a href="mailto:ryanhuff@outlook.com">ryanhuff@outlook.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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You’ll need a specific Webex DNS zone and the traversal trunk really just needs to support pre-loaded route headers and SIP parameter preservation (those are the most significant differences over the traversal / neighbor zone you might have setup for B2B).
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<div>It’s a simple enough configuration, but there are a few more moving parts than what the marketing may lead one to believe. Here is the configuration documentation: <a href="https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cloudCollaboration/spark/hybridservices/callservices/cmgt_b_ciscospark-hybrid-call-service-config-guide.html" target="_blank">https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cloudCollaboration/spark/hybridservices/callservices/cmgt_b_ciscospark-hybrid-call-service-config-guide.html</a></div>
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<div>Oh and don’t forget to enable MTLS on the edge and also be aware the ControlHub now requires CCM 11.5.1SU3 or better (it detects CCM version via call connector on Exp-C). It wouldn’t allow you to enable hybrid calling on cloud registered devices otherwise.</div>
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<div>You can technically still get away using Expressway 8.11.4, but that’ll soon be a deprecated version for hybrid calling (you’ll get an alarm about it), so might as well go to 12.5.2 and be done with it.</div>
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<div>BTW, if you try to upgrade an 8.x Expressway to 12.5.x, you will interact with GLO for the 12.x release key (can’t do it from the self service portal because the existing 8.x virtual license is already associated to a PAK and GLO has to invalidate that
relationship first, then hash your new keys to 12.5.x).</div>
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<div>Good Luck!</div>
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<div>- Ryan<br>
<div dir="ltr"><br>
On May 15, 2019, at 18:42, Lelio Fulgenzi <<a href="mailto:lelio@uoguelph.ca" target="_blank">lelio@uoguelph.ca</a>> wrote:<br>
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Very good question. From what I understand, there’s a special traversal link built and it’s all “built-in” and uses the CSS of the remote destination or something like that.
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<div>I’ve read absolutely zero docs about this. This is all based on a quick convo I had. I had the same worries and if I recall correctly, my worries were somewhat alleviated. </div>
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<div>However, that being said, there is only one template in control hub, so if your user needs a different setup on their remote destination (or something like that) you need to go make a manual change. </div>
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<div>It’s sorta like how there’s only one licensing template in control hub for new users. We’re gonna struggle with that. We might have to engage (professional) services which make uses of APIs to assign different services for different users in webex. But
I digress. </div>
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<div dir="ltr"><br>
On May 15, 2019, at 5:20 PM, Jonathan Charles <<a href="mailto:jonvoip@gmail.com" target="_blank">jonvoip@gmail.com</a>> wrote:<br>
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<div dir="ltr">Enabling Cisco hybrid call and routing calls to the PSTN using local gateway (via Expressway C/E pair).
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<div>What search rules do we need on the E and C?</div>
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<div>How do we prevent toll fraud if we have E.164 patterns inbound on our Expressways?</div>
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<div>Am I being paranoid?</div>
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<div>Jonathan</div>
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