An IPv6 Address in string format (See RFC 1884, sec 2.2) An Opaque type used to communicate correlation keys. This field in IPv6 represents the next protocol header type value and has a similar function to the protocol type value in IPv4 The Classifier element allows the AS to identify the traffic flow for which it is requesting resources for. (Section 6.2.1.3) The ContextID element is the identifier that associates the resources of a given session. The ContextID element consists of a baseId element and optional idExtension elements. (Section 6.2.1.4) The ContextInfo element contains the ContextID element, described in 6.2.1.4, and the element ContextStatus, which identifies the status of the associated PacketCable Multimedia gates for the session. A context can be in a reserved or committed state. Identifies the network boundary address for the subscriber. See subscriber ID in PKT-SP-MM-I03-102909 [MM]. The TimeUsageLimit is specified in seconds. This element also has a 'direction' attribute indicating whether the limit is for the upstream or downstream directions or for both direction. An identifier for the subscriber using a service