I am looking into deploying Unity Connection 7.x with a Pub and a Sub connecting across a WAN link. I've gone through Cisco design doc regarding Unity Connection cluster requirements and the requirement is rediculous. Cisco wants a 50MB link with a round-trip of 20ms or less for a 48-voiceport deployment which is what I have. I am wondering if anyone has done any Unity Connection deployment over a 45MB DS3 connection with a round-trip of under 40ms successfully !!! Does anyone know the reasons with the strict requirements ? Thanks in advance !!! I appreciate any inputs/suggestions !!!