You can have separate ORS clusters for each TServer, but all nodes within the cluster must be connected to the same TServer(s).
ORS nodes can have their own URS, but would require agent reservation to be enabled.
I'm not clear on what your target architecture that your thinking might look like though, and we arent running mixed switches, so cant comment on suitability. But at a high level if you want ORS cluster A for SIP Server with URS A, and ORS Cluster B for Avaya TServer with URS B, then I wouldnt see any issues.
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Jason McLennan
Commonwealth Bank of Australia
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