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The SBC uses the DSCP value received in the initial INVITE for the DSCP marking of the SIP message.

• egress - Use to relate dscp to the egress trunk group. Use the following flag for further configuration:
  • useRecvdValue - When the HPC call profile attaches to a trunk group acting as an egress trunk group, use this flag to control DSCP marking for SIP messages the SBC sends forward (for example, INVITE or ACK).

    • disabled (default)
    • enabled
      
• ingress - Use to relate dscp to the ingress trunk group. Use the following flag for further configuration:

  • useRecvdValue - When the HPC call profile attaches to a trunk group acting as an ingress trunk group, use this flag to control DSCP marking for SIP messages the SBC sends backward (for example, 18x or 200 OK).

    • disabled (default)
    • enabled
      

A set of Government Emergency Telecommunications Service (GETS) Access Number (AN), Number Translation (NT), and Feature Code (FC) strings that the SBC uses to determine whether a call is an HPC call or is rejected.

• accessNumber an < 3-10 digits> - The SBC classifies HPC calls using digits in the Request-URI of an initial INVITE request that match GETS-AN. You can configure a maximum of 10 GETS-AN strings.

• featureCode fc < 3-10 characters without visual separators> - The SBC rejects HPC calls using strings in the Request-URI of an initial INVITE request that match GETS-FC. You can configure a maximum of 4 GET-FC strings.

• numberTranslation nt < 3-10 digits> - The SBC classifies HPC calls using digits in the Request-URI of an initial INVITE request that match GETS-NT. You can configure a maximum of 10 GETS-NT strings.


Use this parameter to configure HPC call queuing for trunk groups.

• length <1-256> - Specifies the maximum number of calls that can simultaneously queue at each trunk group. Default: 5.
• state - Use this flag to enable or disable the queuing of HPC calls.
  • disabled (default)
  • enabled
    Note: Do not enable HPC call queuing for ingress and egress trunk groups simultaneously.
   
• timeout<1-90> - Specifies the maximum time (in seconds) that an HPC call remains queued before the SBC stops the attempt to connect the call in the associated trunk group. Default: 30.
  Note: When call is queued on the egress trunk group and the queue timer expires, the SBC sends a 408 response towards the ingress side to release the queued call. For the same scenario in a GW-GW call, the ingress SBC sends a 503 response instead of 408. 

Note: By default, the SBC sends a response code 600 when the call queue is full. To configure the SBC to send the response code 503 when the call queue is full, execute  similar commands as described below:

    % set profiles signaling sipCauseCodeMapping cpcToSipCauseMapProfile TEST baseProfile defaultCpcSip causeMap 161 sipCause 503

    % set addressContext default zone ZONE1 sipTrunkGroup INGRESS_TG signaling causeCodeMapping cpcSipCauseMappingProfile TEST

    % commit

Resource Priority Header (RPH) configuration options to specify how the RPH or ISUP-MIME affects call handling and building of the RPH for HPC calls.

• egress - Determines how the SBC handles the ets and wps namespaces in the RPH (built by the SBC).
  • nonEtsWps - Determines if the SBC includes or does not include namespaces other than ets and wps in the RPH (built by the SBC).
    • dontInclude (default)

    • include

  • validEtsWps - Determines if the SBC includes or does not include valid ets and wps namespaces in the RPH (built by the SBC).
    • dontInclude
    • include (default)
  
  
• etsCpcPrecedence – This parameter is used for deriving a call's CPC during ingress processing when a conflict exists between the CPC based on RPH and the ISUP-MIME (SIP-I) calling party category parameter.

  • cpc – The call's CPC parameter is derived from the ISUP-MIME CPC parameter.

  • ets – The call’s CPC parameter is derived based on the SIP RPH ETS value.

  • hpc (default) – The call’s CPC parameter is derived based on SIP RPH ETS, or else it is derived from ISUP-MIME CPC parameter.

  
  
• etsDefaultValue <value> – Default priority value used for the ETS namespace. (range: 0-4 / default = 0)
  
  
• includeAcceptIn417 – Enable this flag to include the Accept-Resource-Priority header when sending a 417 response.
  • disabled (default)
  • enabled
  
  
• includeRequire – Enable this flag for the SBC to include the Require header with the resource-priority option tag in an egress INVITE.
  • disabled (default)
  • enabled
  
  
• ingress - Determines how the SBC handles namespaces in the received RPH.
  • invalidEtsWps - Determines if the SBC ignores or rejects invalid ets and wps namespaces in the RPH of an ingress SIP INVITE request.
    
    • ignore (default)
    • reject
  • nonEtsWps - Determines if the SBC accepts or ignores namespaces other than ets and wps in the RPH of an ingress SIP INVITE request.
    
    • accept (default)
    • ignore
  • validEtsWps - Determines if the SBC accepts, ignores, or rejects valid ets and wps namespaces in the received RPH.
    
    • accept (default)
    • ignore
    • reject
  
  
• rejectNotEtsDn – Enable this flag for the SBC to reject a call when SBC classifies the call as HPC based on the received RPH and the PSX determines Directory Number (DN) to be a non-ETS DN.
  • disabled (default)
  • enabled
  
  
• useIncomingEts – Enable this flag for the SBC to use the received ETS value. If set to disabled, the SBC uses the provisioned etsDefaultValue.
  • disabled (default)
  • enabled
  
  
• usePrecedence – Specifies whether the ETS value in outgoing SIP messages for the call takes the priority/precedence value received in the ingress.
  • disabled (default) – The ETS priority value in outgoing SIP messages is derived from the etsDefaultValue, when either of the usePrecedence at the ingress trunk group’s HPC profile or useWpsPrecedence at the egress trunk group’s HPC profile fields are disabled, or when there is no incoming priority/precedence value.
  • enabled – When usePrecedence is enabled at the ingress trunk group’s HPC profile and useWpsPrecedence is enabled at the egress trunk group’s HPC profile, the ETS value in outgoing SIP messages is derived from the incoming Wireless Priority Service/Multilevel Precedence and Preemption (WPS/MLPP) priority/precedence value.
• useWpsPrecedence – Enable this flag for the SBC to take the ETS priority value from WPS/ MLPP precedence, if available, when adding ETS. If set to disabled, the SBC uses the configured etsDefaultValue when adding ETS.
  
  • disabled (default)
  • enabled
  
  
• wpsMlppPrecedence – Use this parameter to determine how to handle the call when the WPS value in the SIP RPH and a MLPP parameter in the associated ISUP-MIME indicate different handling:

• • mlpp (default) – Handle the call as indicated by the ISUP-MIME MLPP parameter.
  • wps – Handle the call as indicated by the SIP RPH WPS value.

Administrative state of HPC Call Profile.

• disabled (default)
• enabled