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The 

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platform supports processing the Resource-Priority Header (RPH) to classify a call as an emergency call. If the namespace and r-priority of a received r-value in the initial INVITE RPH exactly matches with the namespace and r-priority respectively of a configured value, then the call is considered an emergency call. The comparison is case-insensitive, and multiple r-values can be processed in incoming INVITE.

The SBC can use the IPSP transparency flag 'resourcePriorityOptionTag' to transparently pass the 'resource-priority' option tag received in Require or Supported header of various SIP messages, such as INVITE, REGISTER, SUBSCRIBE (but not in-dialog SUBSCRIBE), PUBLISH, REFER, NOTIFY, UPDATE, MESSAGE, OPTIONS, CANCEL, and GW-GW transparency. This flag is available to both the ERE and external PSX. Refer to Common IP Attributes - SIP - CLI for CLI details.

Command Syntax

The CLI syntax to configure the SIP RPH Profile is shown below:

% set profiles services sipResourcePriorityHeaderProfile <RPHprofile name> 
	rphEmergencyMatchingConfig <RPH namespace> <RPH priority>
	sendEgressRphForEmergency <RPH namespace> <RPH priority>
	
% show table profiles services sipResourcePriorityHeaderProfile <RPHprofile name> 

% delete profiles services sipResourcePriorityHeaderProfile <RPHprofile name>

Command Parameters

SIP Resource Priority Header Profile Parameters

Parameter

Length/Range

Description

sipResourcePriorityHeaderProfile

1-23Use this parameter specify the name of the Resource Priority Header Profile configured on the node. A maximum of 32 RPH Profiles can be created.
rphEmergencyMatchingConfig
1-31

Use this parameter to specify the r-value configuration consisting of the following:

  • <RPH namespace> – The namespace associated with the r-value (alphanumeric string with a maximum size of 31 characters).

  • <RPH priority> – Specifies the priority associated with the r-value. (alphanumeric string with a maximum size of 31 characters).

A maximum of 24 r-values can be configured. The r-values are unique case-insensitive.

sendEgressRphForEmergency1-31

Use this parameter to specify RPH value to send from egress, if configured.

  • <RPH namespace> – The namespace associated with the r-value (alphanumeric string with a maximum size of 31 characters).

  • <RPH priority> – Specifies the priority associated with the r-value. (alphanumeric string with a maximum size of 31 characters).

Command Examples

To create an RPH profile:

% set profiles services sipResourcePriorityHeaderProfile RPHProfile
% set profiles services sipResourcePriorityHeaderProfile RPHProfile rphEmergencyMatchingConfig RValue1 1
% set profiles services sipResourcePriorityHeaderProfile RPHProfile sendEgressRphForEmergency Rvalue1 2
% commit

% show profiles services sipResourcePriorityHeaderProfile
sipResourcePriorityHeaderProfile RPHProfile {
    rphEmergencyMatchingConfig RValue1 1;
    sendEgressRphForEmergency Rvalue1 2;
}


To attach an RPH profile to an emergency profile:

% set profiles services emergencyCallProfile ECProfile resPriorityHeaderProfile RPHProfile


To associate the emergency profile to a SIP Trunk Group:

% set addressContext ac1 zone zoneTest sipTrunkGroup TG-1 services emergencyCallProfile ECProfile



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