Cisco Cisco Packet Data Interworking Function (PDIF) Guía Para Resolver Problemas
Ty Interface Support
Overview ▀
Cisco ASR 5000 Series Enhanced Feature Configuration Guide ▄
OL-22983-01
Supported Standards
Support for the following standards and requests for comments (RFCs) have been added with the IMS authorization
service functionality:
service functionality:
3GPP2 TSG-X (PSN) X.P0013-014-0.8, Service Based Bearer Control – Ty Interface Stage-3
RFC 3588, Diameter Base Protocol
RFC 4006, Diameter Credit-Control Application
Supported Networks and Platforms
This feature supports all ASR 5000 Series Platforms for the core network services configured on the system.
Interfaces for IMS Authorization
For IMS deployment in cdma2000 networks the system uses policy-based admission control support and/or flow based
charging. The interfaces supported to perform SBLP and FBC in IMS authorization service described in the following
sections.
charging. The interfaces supported to perform SBLP and FBC in IMS authorization service described in the following
sections.
Ty Interface for PDSN/FA/HA
The Ty reference is an interface between an Access Gateway (AGW) and a Policy and Charging Rules Function (PCRF)
in support of Service Based Bearer Control.
in support of Service Based Bearer Control.
The system, acting as an AGW, performs the Traffic Plane Function (TPF) and Policy and Charging Enforcement
Function (PCEF) functionality. PCRF may be co-located with the P-CSCF, but they are different entities.
Function (PCEF) functionality. PCRF may be co-located with the P-CSCF, but they are different entities.
The Ty interface performs interactions for the purpose of local authorization of bearer level QoS resources on the
resources negotiated at the application layer and/or based on local policy. In addition it supports the passing of
information that may be used to establish flow based charging policy. The Ty interface also provides the following
features:
resources negotiated at the application layer and/or based on local policy. In addition it supports the passing of
information that may be used to establish flow based charging policy. The Ty interface also provides the following
features:
Co-ordination between the application and the bearer level for per-flow accounting
Notification of loss of bearer from the bearer control entity to the application
Application control of the flow of packets on the bearer including the restriction of flow end-points (flow
filtering)
General policy considerations for the allocation of resources on the bearer in the local domain.