Description: The MIB to manage CoS(Class of Service) queue/buffer related parameters. One or more virtual interfaces may exist on a physical interface or a channelized interface. Every virtual interface has certain number (e.g. 16) of CoS queues. These queues are also known as Class Of Service Buffers. Every COS queue maps to an ATM trafiic type such as CBR, VBR-rt, ABR etc. These COS queues are used to provide QOS (quality of service), depending on the corresponding ATM trafiic type. This MIB provides management functionality such as Threshold Crossing Alarms(TCA) for cell discards and interval statistics for these COS queues.