One thing to keep in mind if you go with SIP is that all calls over a SIP trunk are presented to CUCM as type Unknown so you lose the subscriber/national/etc.. information for the call. This could be an issue if you want to use calling party transformations based on call-type information or if you want to prefix digits to the calling number for the missed calls list. <br>
<br>You can still accomplish the same thing by using ios voice translation profiles on the gateway of course. <br><br><div class="gmail_quote">On Sun, Feb 14, 2010 at 4:58 PM, Carter, Bill <span dir="ltr"><<a href="mailto:bcarter@sentinel.com">bcarter@sentinel.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><br>
I am preparing for a UCM 7.1(3) install. The deployment includes Zoom<br>
CallREC call recording. We will use SPANless recording which utilizes a<br>
SIP trunk between UCM and Zoom. A majority of the calls will be<br>
recorded. I am wondering if there are advantages to using SIP from UCM<br>
to the Gateways. I haven't studied the UCM/SIP integration with gateways<br>
since studying for the old CCIE Voice with CM 4.1.<br>
<br>
I am looking for CCO documents comparing H323 and SIP as it relates to<br>
UCM features and functionality, and any experiences from the community<br>
using SIP for the UCM to Voice Gateway connections.<br>
<br>
Thanks much<br>
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