High Probability of Completion (HPC) features comprise a set of functionalities that provide an enhanced probability of call completion to authorized Government Emergency Telecommunications Service (GETS) and Wireless Priority Service (WPS) users during network stress and/or congestion.
There are two methods in HPC call classification:
For more information on GSX9000’s GETS and WPS feature, refer to GSX documentation Support for Government Emergency Telecommunications Service and Wireless Priority Service.
- Early or late HPC call classification
- Call Admission Control (CAC) treatment: ingress CAC for early HPC classified calls and egress CAC treatment for early and late HPC classified calls
- Resource-Priority header (RPH) which is used for treating and marking SIP calls as HPC calls.
- Network Wide HPC (NW-HPC) License enforcement
The Service profile,
hpcCallProfile, is configurable to classify a call as HPC and add RPH for HPC calls. Also, the parameter
hpcOversubscription can be added to various CAC configuration objects to support the HPC CAC logic.
Preferential servicing of HPC calls is conditional on the installation of NW-HPC license on the EMS. For more information on EMS licenses, refer to the EMS documentation Licensed Applications and Features.