In this section:


IMPORTANT

Ribbon recommends using the Transparency Profile to configure transparency on the SBC Core for new deployments, as well as applying additional transparency configurations to existing deployments. Do not use IP Signaling Profile flags in these scenarios because the flags will be retired in upcoming releases.

Refer to the SBC SIP Transparency Implementation Guide for additional information.

Use this screen to configure the name of SIP headers to transparently pass.

The flexible header transparency profile supported in earlier release, where transparency for a random header is achieved by adding its name to the profile. The functionality was limited to initial INVITE request, REGISTER request, and mid-dialog requests in an INVITE initiated dialog (excluding a mid-dialog SUBSCRIBE as it is not supported). Selective unknown headers can be passed transparently in REGISTER, initial INVITE, and in mid-dialog requests in an INVITE initiated dialog. Header transparency was not supported for out-of-dialog messages in earlier SBC release.

The SBC supports the following out-of-dialog functionality:

  • To enable transparency for "all" the headers.
  • To selectively ignore transparency of headers (useful with "all" transparency).
  • To exclude the methods for which transparency of headers is not needed.


Note

The transparency profile is associated with the egress trunk group. The header transparency is based on the headers that are present in the transparency profile of the egress trunk group for requests and headers that are present in the ingress trunk group for responses.

Note

ACK messages are not normally sent end-to-end through SBC. Transparency of ACK messages is not supported even if the End To End Ack flag is enabled in the "IP Signaling Profile". In late media scenarios, the SBC does not support transparency of headers and bodies.

Note

You may configure headers in compact form and transparently passed using a Transparency Profile. It is advisable to configure both compact and long formats to ensure both types of received headers in the PDU are transparently passed.

To View SIP Header

On SBC main screen, go to Configuration > Profile Management > Category: Service Profiles > Transparency Profile > SIP Header.

Select the desired Transparency Profile from the drop-down list to view/edit the SIP Header parameters.

The SIP Header window is displayed.

To Edit SIP Header

To edit any of the SIP Header in the list, click the radio button next to the specific SIP Header name.

The Edit Selected SIP Header window is displayed below.

Make the required changes and click Save.

To Create SIP Header

To create a new SIP Header, click New SIP Header tab on the SIP Header List panel.

The Create New SIP Header window is displayed.

The following fields are displayed:

Note

If a specific header is configured, Ignore Transparency and Excluded Methods are mutually exclusive.

  • If Ignore Transparency is configured, Excluded Methods does not display.
  • If Excluded Methods is configured, Ignore Transparency does not displayed.
Note

The Ignore Transparency flag applies in the following cases:

  • when combined with a configuration to allow "all" SIP headers
    -or-
  • when one of the transparency flags for SIP header in the IP Signaling Profile is enabled

Table 1: Transparency Profile - SIP Header Parameters

Parameter

Description

Header Name 

The Header name of this SIP Transparency Profile. The value ranges up to 63 characters.

Excluded Methods

Specifies the method(s) for which the transparency of the SIP header is not applicable. Options are:

  • register
  • invite
  • subscribe
  • notify
  • info
  • publish
  • message
  • refer
  • options
  • update
  • bye
  • prack
  • cancel
 Ignore Transparency

If Yes, this parameter excludes the transparency of the SIP header. Options are:

  • No (default)
  • Yes

To Copy SIP Header

To copy any of the created SIP Header and to make any minor changes, click the radio button next to the specific SIP Header to highlight the row.

Click Copy SIP Header tab on the SIP Header List panel.

The Copy Selected SIP Header window is displayed along with the field details which can be edited.

Make the required changes to the required fields and click Save. The copied SIP Header is displayed at the bottom of the original SIP Header in the SIP Header List panel.

To Delete SIP Header

To delete any of the created SIP Header, click the radio button next to the specific SIP Header.

Click Delete at the end of the highlighted row. A delete confirmation message appears seeking your decision.

Click Yes to remove the specific SIP Header from the list.