What is not currently covered in this document
		• The end system models (i.e., transmitter and receiver models based on the interfaces defined in G.698.1 and G.698.2) are not included in G.680 but in other ITU documents. • Distributed impairment accumulation model attached in appendix (G.680 included Distributed impairment accumulation model only in its appendix)
					75th IETF – Stockholm, Sweden, July 2009
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