Overview
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.
The use of the GETS SOFTWARE is restricted in the U.S. and U.S. TERRITORIES to NS/EP users authorized by the Office of the Manager, National Communications System (OMNCS).
There are two methods in HPC call classification:
- Early HPC classification—an HPC call is recognized based on the received SIP RPH content in the incoming INVITE or the code point in Calling Party's Category (CPC) parameter of the ISUP-MIME. For ANSI, the CPC parameter is National Security/Emergency Preparedness (NS/EP) and for ITU, the CPC parameter is International Emergency Preference Scheme (IEPS).
- Late HPC classification—An HPC call can also be recognized by PSX during analysis of the Called Party Number.
HPC capable switches such as GSX9000 enable HPC calls to receive additional network support to increase the chances of successful call completion.
For more information on GSX9000’s GETS and WPS feature, refer to GSX documentation Support for Government Emergency Telecomunications Service and Wireless Priority Service.
The SBC supports a subset of GSX9000's HPC capabilities and the capabilities are as follows:
- HPC call classification that is, early or late HPC classification.
- Call Admission Control (CAC) treatment: ingress CAC for early HPC classified calls and egress CAC treatment for early and late HPC classified calls.
- The Resource-Priority header (RPH) is used for treating and marking SIP calls as HPC calls.
- Network Wide HPC (NW-HPC) License enforcement.
- The SBC must be configured to use the external PSX for this feature. For more information on PSX's GETS / WPS feature, refer to PSX documentation:
Preferential servicing of HPC calls is conditional on the installation of NW-HPC license on EMS. For more information on EMS licenses, refer to the EMS documentation: Licensed Applications and Features.
View Hpc Call Profile
- On the SBC Main screen, navigate using any of the following EMA paths:
- All > Profiles > Services > Hpc Call Profile
- Configuration > Profile Management > Category: Service Profiles > Hpc Call Profile
The Hpc Call Profile window displays.
Create Hpc Call Profile
To create a new Hpc Call Profile, click +New Hpc Call Profile on the Hpc Call Profile List panel.
The Create New Hpc Call Profile displays.
- Provide the values for the fields and click Save.
For more information, refer to HPC Call Profile - CLI.
Edit Hpc Call Profile
To edit any of the created Hpc Call Profiles, click the radio button next to the specific Hpc Call Profile entry.
The Edit Selected Hpc Call Profile window displays.
- Make the required changes and click Save.
Copy Hpc Call Profile
To copy any of the created Hpc Call Profile, click the radio button next to the specific Hpc Call Profile entry.
- Click Copy Hpc Call Profile on the Hpc Call Profile List panel.
The Copy Selected Hpc Call Profile window displays.
For parameters not mentioned in Table 1, refer to:- Hpc Call Profile - Dscp
- Hpc Call Profile - Gets Strings
- Hpc Call Profile - Queue
- Hpc Call Profile - Rph
- Make the required changes and click Save.
Delete Hpc Call Profile
To delete any of the created Hpc Call Profile entry, click the radio button next to the specific Hpc Call Profile entry.
- Click the delete icon at the end of the highlighted row.
A delete confirmation message appears seeking your decision.
- Click Yes to remove the specific Hpc Call Profile entry from the list.