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New IP Telephony Req “5) With respect to application layer signaling, Application-layer mechanisms specifically targeted to recognize ETS type labels MUST be ABLE to support a service other than best effort (we assume this to be better than best effort service). This support SHOULD focus on probability of forwarding packets used for call completion. Probability MAY reach 100% depending on the local policy associated with the label. Local policy MUST also be used to determine IF better than best effort is to be applied to a specific label (or related set of labels). The above paragraph MUST be taken in its entirety. The ability to support better than best effort does not mean that the application layer mechanism is expected to be activated. Further, we do not define the means by which better than best effort is or should be realized. Application-layer mechanisms that do not recognize ETS type labels are not subject to this requirement. “ |