when i was still in call centers our biggest nightmare was with a Unix system. Our site ran Server 2k from MS, but our new client ran systems with Unix. THeir first mistake was setting up a Genesys call routing system, instead of a Geotel. Besides that, we had nightmarish trouble getting their Unix network to recognize the data stream that was being fed. We constantly lost connection, and they constantly had issue with load balancing between the various servers in the array. On our end, it was 100% "plug and play". It worked without fail, without issue. It was a Unix system designed by Sun Microsystems.