1. A communication system for collecting and correlating quality information for sessions over a path between an origination node and a destination node, the communication system comprising: a quality processing system configured to transmit a first subscribe message in a first protocol to a registration system, wherein the first subscribe message requests the registration system to inform the quality processing system of any new device registrations; the registration system configured to receive a first registration notification message in the first protocol from a first device to register the first device and transmit a first registration identification message in the first protocol identifying the first device responsive to the first subscribe message; the quality processing system further configured to transmit a second subscribe message in the first protocol to the first device, wherein the second subscribe message requests the first device to provide the quality processing system with session quality information related to sessions the first device will participate on; and the first device configured to receive the second subscribe message, process first traffic for a session to determine first quality information, wherein the first quality information is determined from first quality information messages generated in a second protocol, and transmit a first quality message in the first protocol indicating the first quality information to the quality processing system responsive to the second subscribe message, wherein the first quality message contains the first quality information determined from the first quality information messages.