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The NAT Direct Media Group is a collection of public signaling IP addresses for NAT devices supporting Direct Media (DM). A NAT Direct Media Group name can be maximum of 32 characters; however, “0.0.0.0” (IPv4) and “::0” (IPv6) are not allowed.

To allow Direct Media between NAT devices, or between NAT and Non-NAT devices, the following configuration is necessary.

  1. Enable Direct Media Allowed Behind NAPT and DM flags at the Trunk Group level.
  2. For Direct Media between endpoints behind same NAT, ensure the signaling IPs of the endpoints match.
  3. For Direct Media across NAT devices, or from NAT to Non-NAT (Hybrid Networks), configure/group the Signaling IPs of the NAT or Non-NAT device (for Hybrid networks) in the new NAT Direct Media Group table at the Address Context level.

Direct Media is disallowed under following conditions:

  • One or both endpoints are behind NAT and Direct Media Allowed Behind NAPT flag is disabled.
  • If Direct Media Allowed Behind NAPT flag is enabled and Signaling IPs of the NAT devices do not match.
  • Signaling IPs of the NAT or Non-NAT (for Hybrid Networks) devices are not grouped in the same NAT Direct Media Group Table.
  • Address Context name of both endpoints do not match.
  • If the call is a Lawful Intercept call.

To View Nat Direct Media Group

On SBC main screen, navigate to All > Address Context > Nat Direct Media Group.

The Nat Direct Media Group can be checked for each Address Context or for all the Address Contexts created. Use the drop-down box to select the desired Address Contexts.

All - Address Context - Nat Direct Media Group Main Field

The Nat Direct Media Group window is displayed.

All - Address Context - Nat Direct Media Group

To Edit Nat Direct Media Group

To edit any of the Nat Direct Media Group in the list, click the radio button next to the specific Nat Direct Media Group name.

All - Address Context - Nat Direct Media Group Highlighted

The Edit Selected Nat Direct Media Group window is displayed below.

All - Address Context - Nat Direct Media Group Edit Window

The object Nat Direct Media Group cannot be edited as the fields are read-only.

To Create Nat Direct Media Group

To create a new Nat Direct Media Group, click New Nat Direct Media Group tab on the Nat Direct Media Group List panel.

All - Address Context - Nat Direct Media Group Fields

 

The Create New Nat Direct Media Group window is displayed.

All - Address Context - Nat Direct Media Group Create Window

The following field is displayed:

Nat Direct Media Group Parameter

Parameter Description
Name Specifies the name of the direct media with NAT supported table.

To Delete Nat Direct Media Group

To delete any of the created Nat Direct Media Group, click the radio button next to the specific Nat Direct Media Group which you want to delete.

All - Address Context - Nat Direct Media Group Highlighted

 

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

All - Address Context - Nat Direct Media Group Delete Confirmation

Click OK to remove the specific Nat Direct Media Group from the list.

 

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