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The SIP Filter Profile created has the filter settings of all the headers set to Disabled by default. To change the filter setting of the chosen headers to Enabled, navigate to All > Profiles > Signaling > SIP Filter Profile > Header.

Select a SIP Filter Profile from the SIP Filter Profile drop-down list. Select Disabled/Enabled for the headers. For example, to enable filtering for the Also header, select Enabled adjacent to the header name.

Enable Header Transparency

 

To save the changes, click Save. To cancel all changes made since the last saved state, click Undo Edits.

If SIP Filter Profile is used for Allow, Require and Supported headers, then their transparency cannot be achieved using SIP Param Filter Profile.

 

The parameters are described below:

SIP Filter Profile - Header - Parameters

ParameterDescription
Header

The name of the header under a SIP Filter Profile. For a list of permissible headers, see Permissible SIP Headers.

To enable filtering for a header, configure the setting to Enabled.

  • Disabled (default)
  • Enabled

If a header is known and the filter setting for the header is set to Disabled (default), the header is parsed by the SBC. In case of any parsing error, the SBC terminates a call. However, if the filter setting for a known header is set to Enabled, the SBC does not parses the header, even if parsing for the header is supported by the SBC. Additionally, all known filtered headers and unknown headers can be transparently relayed without parsing, if the unknown header transparency is Enabled in IP signaling profile..

 

Permissible SIP Headers

 

The mandatory headers which are not part of the SIP Filter Profile are as follows:

  • From
  • To
  • Via
  • Call-id
  • Cseq
  • Max-Forwards

CAUTION: Avoid filtering headers pertaining to SIP call routing/protocol processing, as it may cause unexpected results such as call failures. Some of the headers that should not be filtered are as follows:

  • Contact
  • RSeq
  • RAck
  • Record-Route
  • Route
  • Content-Type
  • Content-Length
  • WWW-Authenticate

 

The details of the existing header names whose filter settings are configurable by SIP Filter Profile, are as follows:

SIP headers whose transparency is configurable by SIP Filter Profile

 Header

Length/Range

Default Value

Description

Overload-ControlDisabled/EnabledDisabledThe header Overload-Control is not parsed by the SBC when the transparency setting is set to Enabled.
P-K-CflDisabled/EnabledDisabledThe header P-K-Cfl is not parsed by the SBC when the transparency setting is set to Enabled.
P-K-CfoDisabled/EnabledDisabledThe header P-K-Cfo is not parsed by the SBC when the transparency setting is set to Enabled.
RAck  Disabled/EnabledDisabledThe header RAck is not parsed by the SBC when the transparency setting is set to Enabled.
RSeqDisabled/EnabledDisabledThe header RSeq is not parsed by the SBC when the transparency setting is set to Enabled.
WWW-AuthenticateDisabled/EnabledDisabledThe header WWW-Authenticate is not parsed by the SBC when the transparency setting is set to Enabled.
Accept-ContactDisabled/EnabledDisabledThe header Accept-Contact is not parsed by the SBC when the transparency setting is set to Enabled.
Accept-LanguageDisabled/EnabledDisabledThe header Accept-Language is not parsed by the SBC when the transparency setting is set to Enabled.
Accept-Resource-PriorityDisabled/EnabledDisabledThe header Accept-Resource-Priority is not parsed by the SBC when the transparency setting is set to Enabled.
AcceptDisabled/EnabledDisabledThe header Accept is not parsed by the SBC when the transparency setting is set to Enabled.
Alert-InfoDisabled/EnabledDisabledThe header Alert-Info is not parsed by the SBC when the transparency setting is set to Enabled.
AllowDisabled/EnabledDisabledThe header Allow is not parsed by the SBC when the transparency setting is set to Enabled.
AlsoDisabled/EnabledDisabledThe header Also is not parsed by the SBC when the transparency setting is set to Enabled.
AnonymityDisabled/EnabledDisabledThe header Anonymity is not parsed by the SBC when the transparency setting is set to Enabled.
AuthorizationDisabled/EnabledDisabledThe header Authorization is not parsed by the SBC when the transparency setting is set to Enabled.
Call-Connect-IdDisabled/EnabledDisabledThe header Call-Connect-Id is not parsed by the SBC when the transparency setting is set to Enabled.
Call-Info Disabled/EnabledDisabledThe header Call-Info is not parsed by the SBC when the transparency setting is set to Enabled.
ContactDisabled/EnabledDisabledThe header Contact is not parsed by the SBC when the transparency setting is set to Enabled.
Content-LengthDisabled/EnabledDisabledThe header Content-Length is not parsed by the SBC when the transparency setting is set to Enabled.
Content-TypeDisabled/EnabledDisabledThe header Content-Type is not parsed by the SBC when the transparency setting is set to Enabled.
Diversion  Disabled/EnabledDisabledThe header Diversion is not parsed by the SBC when the transparency setting is set to Enabled.
Error-InfoDisabled/EnabledDisabledThe header Error-Info is not parsed by the SBC when the transparency setting is set to Enabled.
EventDisabled/EnabledDisabledThe header Event is not parsed by the SBC when the transparency setting is set to Enabled.
ExpiresDisabled/EnabledDisabledThe header Expires is not parsed by the SBC when the transparency setting is set to Enabled.
Feature-CapsDisabled/EnabledDisabledThe header Feature-Caps is not parsed by the SBC when the transparency setting is set to Enabled.
Geolocation-Error Disabled/EnabledDisabledThe header Geolocation-Error is not parsed by the SBC when the transparency setting is set to Enabled.
Geolocation-RoutingDisabled/EnabledDisabledThe header Geolocation-Routing is not parsed by the SBC when the transparency setting is set to Enabled.
GeolocationDisabled/EnabledDisabledThe header Geolocation is not parsed by the SBC when the transparency setting is set to Enabled.
History-InfoDisabled/EnabledDisabledThe header History-Info is not parsed by the SBC when the transparency setting is set to Enabled.
Info-PackageDisabled/EnabledDisabledThe header Info-Package is not parsed by the SBC when the transparency setting is set to Enabled.
Min-Expires Disabled/EnabledDisabledThe header Min-Expires is not parsed by the SBC when the transparency setting is set to Enabled.
Min-SEDisabled/EnabledDisabledThe header Min-SE is not parsed by the SBC when the transparency setting is set to Enabled.
P-Access-Network-InfoDisabled/EnabledDisabledThe header P-Access-Network-Info is not parsed by the SBC when the transparency setting is set to Enabled.
P-Area-InfoDisabled/EnabledDisabledThe header P-Area-Info is not parsed by the SBC when the transparency setting is set to Enabled.
P-Asserted-IdDisabled/EnabledDisabledThe header P-Asserted-Id is not parsed by the SBC when the transparency setting is set to Enabled.
P-Asserted-ServiceDisabled/EnabledDisabledThe header P-Asserted-Service is not parsed by the SBC when the transparency setting is set to Enabled.
P-Associated-URIDisabled/EnabledDisabledThe header P-Associated-URI is not parsed by the SBC when the transparency setting is set to Enabled.
P-Called-Party-IdentityDisabled/EnabledDisabledThe header P-Called-Party-Identity is not parsed by the SBC when the transparency setting is set to Enabled.
P-Carrier-InfoDisabled/EnabledDisabledThe header P-Carrier-Info is not parsed by the SBC when the transparency setting is set to Enabled.
P-Cdr-InfoDisabled/EnabledDisabledThe header P-Cdr-Info is not parsed by the SBC when the transparency setting is set to Enabled.
P-Charge-InfoDisabled/EnabledDisabledThe header P-Charge-Info is not parsed by the SBC when the transparency setting is set to Enabled.
P-Charging-Function-AddressesDisabled/EnabledDisabledThe header P-Charging-Function-Addresses is not parsed by the SBC when the transparency setting is set to Enabled.
P-Charging-VectorDisabled/EnabledDisabledThe header P-Charging-Vector is not parsed by the SBC when the transparency setting is set to Enabled.
P-ChgMsg-InfoDisabled/EnabledDisabledThe header P-ChgMsg-Info is not parsed by the SBC when the transparency setting is set to Enabled.
P-DCS-Billing-InfoDisabled/EnabledDisabledThe header P-DCS-Billing-Info is not parsed by the SBC when the transparency setting is set to Enabled.
P-DCS-LAESDisabled/EnabledDisabledThe header P-DCS-LAES is not parsed by the SBC when the transparency setting is set to Enabled.
P-Early-MediaDisabled/EnabledDisabledThe header P-Early-Media is not parsed by the SBC when the transparency setting is set to Enabled.
P-Orig-CADisabled/EnabledDisabledThe header P-Orig-CA is not parsed by the SBC when the transparency setting is set to Enabled.
P-Preferred-IdentityDisabled/EnabledDisabledThe header P-Preferred-Identity is not parsed by the SBC when the transparency setting is set to Enabled.
P-Profile-KeyDisabled/EnabledDisabledThe header P-Profile-Key is not parsed by the SBC when the transparency setting is set to Enabled.
P-Sig-InfoDisabled/EnabledDisabledThe header P-Sig-Info is not parsed by the SBC when the transparency setting is set to Enabled.
P-Svc-Info Disabled/EnabledDisabledThe header P-Svc-Info is not parsed by the SBC when the transparency setting is set to Enabled.
P-Term-CADisabled/EnabledDisabledThe header P-Term-CA is not parsed by the SBC when the transparency setting is set to Enabled.
P-Visited-Network-IDDisabled/EnabledDisabledThe header P-Visited-Network-ID is not parsed by the SBC when the transparency setting is set to Enabled.
PathDisabled/EnabledDisabledThe header Path is not parsed by the SBC when the transparency setting is set to Enabled.
PrivacyDisabled/EnabledDisabledThe header Privacy is not parsed by the SBC when the transparency setting is set to Enabled.
Proxy-AuthenticateDisabled/EnabledDisabledThe header Proxy-Authenticate is not parsed by the SBC when the transparency setting is set to Enabled.
Proxy-AuthorizationDisabled/EnabledDisabledThe header Proxy-Authorization is not parsed by the SBC when the transparency setting is set to Enabled.
Proxy-RequireDisabled/EnabledDisabledThe header Proxy-Require is not parsed by the SBC when the transparency setting is set to Enabled.
ReasonDisabled/EnabledDisabledThe header Reason is not parsed by the SBC when the transparency setting is set to Enabled.
Record-RouteDisabled/EnabledDisabledThe header Record-Route is not parsed by the SBC when the transparency setting is set to Enabled.
Recv-InfoDisabled/EnabledDisabledThe header Recv-Info is not parsed by the SBC when the transparency setting is set to Enabled.
Refer-SubDisabled/EnabledDisabledThe header Refer-Sub is not parsed by the SBC when the transparency setting is set to Enabled.
Refer-ToDisabled/EnabledDisabledThe header Refer-To is not parsed by the SBC when the transparency setting is set to Enabled.
Referred-ByDisabled/EnabledDisabledThe header Referred-By is not parsed by the SBC when the transparency setting is set to Enabled.
Remote-Party-IdDisabled/EnabledDisabledThe header Remote-Party-Id is not parsed by the SBC when the transparency setting is set to Enabled.
ReplaceDisabled/EnabledDisabledThe header Replace is not parsed by the SBC when the transparency setting is set to Enabled.
Reply-ToDisabled/EnabledDisabledThe header Reply-To is not parsed by the SBC when the transparency setting is set to Enabled.
Requested-ByDisabled/EnabledDisabledThe header Requested-By is not parsed by the SBC when the transparency setting is set to Enabled.
RequireDisabled/EnabledDisabledThe header Require is not parsed by the SBC when the transparency setting is set to Enabled.
Resource-PriorityDisabled/EnabledDisabledThe header Resource-Priority is not parsed by the SBC when the transparency setting is set to Enabled.
Retry-AfterDisabled/EnabledDisabledThe header Retry-After is not parsed by the SBC when the transparency setting is set to Enabled.
RouteDisabled/EnabledDisabledThe header Route is not parsed by the SBC when the transparency setting is set to Enabled.
Security-Client Disabled/EnabledDisabledThe header Security-Client is not parsed by the SBC when the transparency setting is set to Enabled.
Security-ServerDisabled/EnabledDisabledThe header Security-Server is not parsed by the SBC when the transparency setting is set to Enabled.
Security-VerifyDisabled/EnabledDisabledThe header Security-Verify is not parsed by the SBC when the transparency setting is set to Enabled.
ServerDisabled/EnabledDisabledThe header Server is not parsed by the SBC when the transparency setting is set to Enabled.
Service-RouteDisabled/EnabledDisabledThe header Service-Route is not parsed by the SBC when the transparency setting is set to Enabled.
Session-ExpiresDisabled/EnabledDisabledThe header Session-Expires is not parsed by the SBC when the transparency setting is set to Enabled.
Sip-EtagDisabled/EnabledDisabledThe header Sip-Etag is not parsed by the SBC when the transparency setting is set to Enabled.
Sip-If-MatchDisabled/EnabledDisabledThe header Sip-If-Match is not parsed by the SBC when the transparency setting is set to Enabled.
Subscription-StateDisabled/EnabledDisabledThe header Subscription-State is not parsed by the SBC when the transparency setting is set to Enabled.
SupportedDisabled/EnabledDisabledThe header Supported is not parsed by the SBC when the transparency setting is set to Enabled.
Suppress-If-MatchDisabled/EnabledDisabledThe header Suppress-If-Match is not parsed by the SBC when the transparency setting is set to Enabled.
Target-DialogDisabled/EnabledDisabledThe header Target-Dialog is not parsed by the SBC when the transparency setting is set to Enabled.
TimeStampDisabled/EnabledDisabledThe header TimeStamp is not parsed by the SBC when the transparency setting is set to Enabled.
User-Agent Disabled/EnabledDisabledThe header User-Agent is not parsed by the SBC when the transparency setting is set to Enabled.
User-To-UserDisabled/EnabledDisabledThe header User-To-User is not parsed by the SBC when the transparency setting is set to Enabled.
Warning Disabled/EnabledDisabledThe header Warning is not parsed by the SBC when the transparency setting is set to Enabled.
X-ATPDisabled/EnabledDisabledThe header X-ATP is not parsed by the SBC when the transparency setting is set to Enabled.
X-AUTDisabled/EnabledDisabledThe header X-AUT is not parsed by the SBC when the transparency setting is set to Enabled.
X-BCIDisabled/EnabledDisabledThe header X-BCI is not parsed by the SBC when the transparency setting is set to Enabled.
X-CHGDelayDisabled/EnabledDisabledThe header X-CHGDelay is not parsed by the SBC when the transparency setting is set to Enabled.
X-CHGInfoDisabled/EnabledDisabledThe header X-CHGInfo is not parsed by the SBC when the transparency setting is set to Enabled.
X-Calling-NumDisabled/EnabledDisabledThe header X-Calling-Num is not parsed by the SBC when the transparency setting is set to Enabled.
X-Carrier-InfoDisabled/EnabledDisabledThe header X-Carrier-Info is not parsed by the SBC when the transparency setting is set to Enabled.
X-Contract-AddrDisabled/EnabledDisabledThe header X-Contract-Addr is not parsed by the SBC when the transparency setting is set to Enabled.
X-EMGDisabled/EnabledDisabledThe header X-EMG is not parsed by the SBC when the transparency setting is set to Enabled.
X-FCIDisabled/EnabledDisabledThe header X-FCI is not parsed by the SBC when the transparency setting is set to Enabled.
X-FWDORIG-NUMDisabled/EnabledDisabledThe header X-FWDORIG-NUM is not parsed by the SBC when the transparency setting is set to Enabled.
X-GENERIC-NUMDisabled/EnabledDisabledThe header X-GENERIC-NUM is not parsed by the SBC when the transparency setting is set to Enabled.
X-ISUPMtypeDisabled/EnabledDisabledThe header X-ISUPMtype is not parsed by the SBC when the transparency setting is set to Enabled.
X-ISUPEventDisabled/EnabledDisabledThe header X-ISUPEvent is not parsed by the SBC when the transparency setting is set to Enabled.
X-NOCI Disabled/EnabledDisabledThe header X-NOCI is not parsed by the SBC when the transparency setting is set to Enabled.
X-OBCIDisabled/EnabledDisabledThe header X-OBCI is not parsed by the SBC when the transparency setting is set to Enabled.
X-ORIGCLD-NUMDisabled/EnabledDisabledThe header X-ORIGCLD-NUM is not parsed by the SBC when the transparency setting is set to Enabled.
X-REDBWDINFDisabled/EnabledDisabledThe header X-REDBWDINF is not parsed by the SBC when the transparency setting is set to Enabled.
X-REDCAPDisabled/EnabledDisabledThe header X-REDCAP is not parsed by the SBC when the transparency setting is set to Enabled.
X-REDFWDINFDisabled/EnabledDisabledThe header X-REDFWDINF is not parsed by the SBC when the transparency setting is set to Enabled.
X-REDCNTDisabled/EnabledDisabledThe header X-REDCNT is not parsed by the SBC when the transparency setting is set to Enabled.
X-Service-IndicatorDisabled/EnabledDisabledThe header X-Service-Indicator is not parsed by the SBC when the transparency setting is set to Enabled.
X-Service-TypeDisabled/EnabledDisabledThe header X-Service-Type is not parsed by the SBC when the transparency setting is set to Enabled.
X-TMRDisabled/EnabledDisabledThe header X-TMR is not parsed by the SBC when the transparency setting is set to Enabled.
X-USIDisabled/EnabledDisabledThe header X-USI is not parsed by the SBC when the transparency setting is set to Enabled.

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