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The SIP Param Filter Profile is used by 
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to create one or more profiles defining whether to block or transparently pass option tags/methods for SIP headers Allow, Require and Supported.

The SIP Param Filter Profile includes the following characteristics:

  • This profile takes precedence over existing mechanism/flags when transparently passing Allow/Supported/Require headers, but does not impact corresponding configurations established by the operator. It is operators responsibility to ensure the system is configured properly so that transparently-passed values do not conflict with existing configurations. For example, do not configure 100rel as pass-through if 100rel support fro SIP Trunk Group Signaling is disabled.
  • The settings of SIP Param Filter Profiles for both ingress and egress legs dictate the actual pass-through results (see SIP Param Filter Profile Behavior table below for details.)
  • Pass-through of individual header values is configurable.
  • SIP tags are provided for unknown SIP parameter transparency only. Known SIP parameter transparency is still determined using existing SBC application logic (from Ingress leg to Egress leg) and configurations.

For feature details, see SBC SIP Transparency Implementation Guide.

The
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supports configuring up to 32 SIP Param Filter Profiles. Each profile can be configured using any/all of the three SIP headers.

Command Syntax

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

% set profiles services sipParamFilterProfile <profile name>
	action 
		block <all, or  comma-separated list of tags/methods to include>
		passthru <all, or comma-separated list of tags/methods to include>
		rejectRequest <disable | enable>
	sipHeader <allow | require | supported>
	state <disable | enable>

Command Parameters

SIP Param Filter Profile

 

Parameter

Length/Range

Description

<profile name>

1-23 characters

Name of SIP Parameter Filter Profile.

actionN/A

Use this parameter to specify the action to take against a specified list of SIP option tags/methods for the selected SIP Headers.

  • block – Use this parameter to define which option tags/methods to block for this profile.
    • all – Transparently pass all tags/methods.
    • <tags/methods list> – Enter one or more (comma-separated) names of the tags/methods to transparently pass.
  • passthru – Use this parameter to define which option tags/methods to transparently pass for this profile.
    • all – Transparently pass all tags/methods.
    • <tags/methods list> – Enter one or more (comma-separated) names of the tags/methods to transparently pass.
  • rejectRequest – Enable this flag to allow
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    to reject a request if a 'require' SIP header tag is dropped due to this profile's settings.
    • disable (default)
    • enable

The rejectRequest flag only applies to the 'require' SIP header.

sipHeaderN/A

Identification of the SIP header to block or transparently pass a specific tag/method, a list if tags/methods or all tags/methods, depending upon the settings for action parameter below.

  • allow (default) –  Take action on 'allow' header.
  • require – Take action on 'require' header.
  • supported – Take action on 'supported' header.

state

N/A

The admin state of this SIP Param Filter Profile.

  • disable (default)
  • enable

 

Command Examples

 

% set profiles services sipParamFilterProfile Prof_AS
% set profiles services sipParamFilterProfile Prof_AS sipHeader allow
% set profiles services sipParamFilterProfile Prof_AS sipHeader allow action block INVITE,REGISTER,OPTIONS,MESSAGE
% set addressContext default zone ZONE_AS sipTrunkGroup TG_SIPART_AS services sipParamFilterProfile Prof_AS

 

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