G632:2012 Quality of Service parameters for networks using the Internet Protocol
This Guideline defines a number of IP Network QoS Classes, including performance expectations for each class, and methods of ‘marking’ packets to signal to a receiving network which IP Network QoS Class is expected to be applied to the packet as it travels through the network.
The Guideline was reconfirmed in 2017 and 2022 and the next review is scheduled to occur in 2027.