Base Dictionary

The Diameter > AVP Dictionary > Base Dictionary page allows you to view or clone the AVPs that are familiar to the system (defined in the Base Diameter Standard and in Diameter Applications, such as Diameter Credit Control Application and S6a interface). The cloning function allows you to edit the base AVP and puts the modified AVP in Custom Dictionary. The AVPs in Custom Dictionary shall supersede Base Dictionary AVPs.

The AVP Attribute Name, AVP Code, AVP Flag settings, Vendor ID, Data Type, and Protocol are included in the AVP definition.

If the Data Type is Enumerated, the name of the Enumerated Type is also included.

If the Data Type is Grouped, then the list of Grouped AVPs appears in the dictionary. A grouped AVP's Data field is specified as a sequence of AVPs. Each of those AVPs can, in turn have the Data field specified as a sequence of AVPs. This pattern of embedding AVPs inside AVPs can occur multiple times.

Proprietary and additional standard AVP definitions can be added in the Custom Dictionary. See Custom Dictionary.

Note:

Custom Dictionary entries are not displayed on the Base Dictionary View page.

The AVP definitions in the Base Dictionary can be changed (overwritten) only by specifying them in the Custom Dictionary with a different definition. The AVP Code, Vendor ID, and Attribute Name must remain the same in the changed definition.

Note:

AVP depth refers to the position of an AVP inside the Diameter message. All AVPs following the header of the Diameter message are called Base AVPs, and the Base AVP position is counted as 1. An AVP embedded immediately inside the Base AVP has a depth of 2. An AVP embedded immediately inside an AVP with a depth of 2 has a depth of 3 and so on. See Diameter Mediation User's Guide.

AVP names that are defined in the dictionary can be used in creating Rule Templates and in provisioning Rule Sets.

On the Diameter > AVP Dictionary > Base Dictionary page, you can perform the following actions:

• Filter the list to display only the desired entries. The Flags cannot be filtered.
• Sort the list entries, in ascending or descending order in a column, by clicking the column heading. The default order is by Attribute Name in alphabetical order. The Flags cannot be sorted.
• Select an AVP definition in the list and click Clone AVP.

  The detailed definition for the selected AVP is displayed. Update the fields as needed. Click OK or Apply to save the custom AVP definition.

• Select an AVP definition in the list and click View.

  The detailed definition for the selected AVP is displayed. The fields are described in Diameter Base Dictionary elements.