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Y.1541-QOSM Requirements MUST be possible to specify Y.1541 QoS class peak data rate (p) peak bucket size (Bp) sustainable rate (Rs) sustainable bucket size (b) token bucket rate (r) maximum allowed packet size (M) DiffServ field [RFC 2474] reservation priority restoration priority all QSPEC parameters except MUST be possible to accumulate delay, delay variation & loss ratio across end-to-end path (may span multiple domains) negotiate Y.1541 QoS class across domains negotiate delay, delay variation, & loss ratio across domains |