Dear All,
 
My name is Wissam and I work at a company that develop a software called Speechlog that records calls from CUCM. One of the techniques we use is using SIP trunk to capture the voice RTP packets from either the the extention or from the CM (if MTP is set).  Is there a way to secure redundancy from the CM that insures sending multiple instances of the RTP packet one for each server. or should we provide a proxy or redundancy handling on our side (like nice or witness do).
 
referencing the flooing from Cisco's Help:
<h2 class="pHeading2">
Create Recorder Redundancy
</h2>

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Many recorders have built-in proxy and redundancy functionalities, for example, Nice/Witness recorders.

You can also use the following mechanism to achieve recorder redundancy:

<li>Use the SRV record for the recorder destination address in SIP trunk configuration.</li>

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<li>Use multiple
recorders for redundancy and load balance. Create a SIP trunk for each
recorder; create a route list to include the route groups that have
individual SIP trunks as a member.</li>