In this section:


This section helps you understand the set of IP network media and signaling prefixes that an address must match to be considered for NAT handling. If there are no entries in qualified Prefix table, the endpoint is treated as existing behind a NAT device. As a result, SBC considers requests from all IP addresses to be behind a NAT device.

To View Qualified Prefix

On the SBC main screen, go to Configuration > System Provisioning > Category: Trunk Provisioning > Trunk Group > Sip Trunk Group > SIP Trunk Advanced  > SIP Trunk - Services - Advanced > Qualified Prefix. The Qualified Prefix window is displayed.

Figure 1: System Provisioning - Qualified Prefix

To Edit Qualified Prefix

To edit any of the Qualified Prefixes in the list, click the radio button next to the specific Qualified Prefix name.

The Edit Selected Qualified Prefix window is displayed below. You would not be able to make any changes to fields as both the fields are display only fields.

To Create Qualified Prefix

To create a new Qualified Prefix, click New Qualified Prefix tab on the Qualified Prefix List panel.

Figure 2: System Provisioning - Qualified Prefix Fields

The Create New Qualified Prefix window is displayed.

Figure 3: System Provisioning - Qualified Prefix Create Window

The following fields are displayed:

Table 1: Nat Traversal - Qualified Prefix Parameters

Parameter

Description

Ip Address

Specify either the IPv4 or IPv6 address.

Prefix Length

Specifies the value from 0-128 specifying the number of bits representing the network part of ipAddress.

To Copy Qualified Prefix

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

Click Copy Qualified Prefix tab on the Qualified Prefix List panel.

Figure 4: System Provisioning - Qualified Prefix Fields

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

Figure 5: System Provisioning - Qualified Prefix Copy Window

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

To Delete Qualified Prefix

To delete any of the created Qualified Prefix, click the radio button next to the specific Qualified Prefix which you want to delete.

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

Click Yes to remove the specific Qualified Prefix from the list.


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