ITU-T H.248.52-2008
网关控制协议:QoS支撑包

Gateway control protocol: QoS support packages Study Group 16

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标准号

ITU-T H.248.52-2008

发布日期

2008年06月01日

实施日期

废止日期

无

中国标准分类号

M11

发布单位

IX-ITU

引用标准

IETF RFC 2474 ITU-T H.248.1-2005 ITU-T H.248.15-2002 ITU-T I.371-2004 ITU-T Q.3303.2-2007 ITU-T Y.1291-2004 ITU-T Y.1541-2006 ITU-T Y.2012-2006 ITU-T Y.2111-2006

适用范围

This Recommendation provides H.248 packages for different Quality of Service (QoS) support mechanisms. The QoS Class package (clause 6) defines a single property for signalling a QoS class codepoint. Such a codepoint may be correlated with a set of network performance parameters. Such parameters may be used in the area of transport resource management or admission control. The Differentiated Service package (clause 7) defines a property to control the setting of the 6-bit Differentiated Service (DS) field of the IP header, as defined in [IETF RFC 2474]. The Media Gateway Controller (MGC) can set the Quality of Service (QoS) for egress media flows without having to provision the Media Gateway (MG) with a default Differentiated Service Code Point (DSCP) value. Thus both packages have a slightly different scope as described in the sub-clauses below (see also Appendix II). The General IP Header QoS Octet package (clause 8) provides an extended capability, in comparison to the Differentiated Service package, in order to address the entire 8-bit field, and enable modification of individual bit values. 1.1 Typical application of the QoS Class package 1.2 Typical application of the Differentiated Services and General IP Header QoS Octet packages 1.3 Avoidance of Interaction between the Differentiated Services and General IP Header QoS Octet packages

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