I'm currently in the process of setting up an Expressway C/E for outbound SIP dialing. Right now things are mostly working as expected, but we have two major company sites, one in the US and one in India. Currently my Expressway VMs are running in our US datacenters. This means that any time a SIP call is made by an endpoint in India, it travels over our WAN link to the US ExpC/E and goes out of our US Internet connection and back. This will obviously add latency to the calls and waste WAN bandwidth when these call just need to go directly out over the Internet in India.
Expressway C/E "Rich Media Licenses" are already expensive enough as we have to buy two for every concurrent call when the ExpC isn't doing anything at all. Having to set up another standalone ExpC/E pair in our India datacenter would be a crazy expensive for additional licenses that wouldn't be used concurrently due to the time zone difference. Doing some quick reading, it seems like you can share your rich media licenses between clustered servers, but it seems like the default behavior is to use the cluster for load balancing.
Does anyone know if it's possible to have the clusters set up to route calls from 6xxxx to the US server and 7xxxx to the India server to avoid necessary bandwidth and license use?
Thanks,
Sean
