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<div>The IOS features to manipulate SIP headers are very powerful and will let you workaround any interworking problems between the SBC and UCM quite easily.</div>
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<div>-Ryan </div>
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<div>On Aug 12, 2014, at 10:29 PM, Brian Meade <<a href="mailto:bmeade90@vt.edu">bmeade90@vt.edu</a>> wrote:</div>
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<div dir="ltr">Robert,
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<div>You can technically get away with just using the provider's SBC but be prepared for a lot of going back and forth with them to solve any interop issues. I like having my own SBC/CUBE so that I can modify whatever I want and have more control over the
setup.</div>
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<div>It's also nice to be able to completely hide your internal network behind the CUBE.</div>
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<div>Brian</div>
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<div class="gmail_quote">On Tue, Aug 12, 2014 at 7:41 PM, Robert Blayzor <span dir="ltr">
<<a href="mailto:rblayzor.bulk@inoc.net" target="_blank">rblayzor.bulk@inoc.net</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
I am planning on replacing an again CallManager deployment with SCCP phones with a new CUCM 10.x and SIP phones.<br>
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Our service provider can provide all of our trunking and PSTN connectivity via a direct SIP trunk, so I no longer need a PSTN gateway or PRI card, etc. (or at least I should not).<br>
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We will be peering SIP from the CUCM to our providers SBC, so the question begs to ask on our side is a CUBE absolutely required to make this work? Pros/Cons? I'd rather not have to add a CUBE in if I don't have to.<br>
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Since the phones are native SIP as is the CallManager I'm trying to understand why a CUBE is required? (or is it not?)<br>
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TIA<br>
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-Robert<br>
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