Deployment
Oreka (orkaudio) can be deployed in various topologies
A very easy way to setup up your own data-center would be to use the spanning port to mirror all the VoIP traffic to the recording server on which orkaudio is running.
Some more examples are presented in this white paper doc.
AWS supports VXLAN Mirroing which is supported by orkaudio.
Install the orkaudio on the traffic mirror target ec2 instance, and orkaudio will capture all the voip calls from the traffic mirror sources
If your cloud provider supports VXLAN mirroring you can refer to the previous section, otherwise the quickest way to setup would be to co-install orkaudio on your pbx or sbc machine and let it capture all the traffic that is passing though the eth0 instance. This way orkaudio will be able to capture all the voip calls that are going though your pbx/sbc.
oreka opensource version supports semi-passive SIPREC i.e it can consume the SIP REC messages but wouldn't respond back to those messages. If you can configure your appliance/pbx/gateway to transmit the message/media without waiting for a response then orkaudio would capture those calls.