MCC Ranges Configuration

The MCC Ranges component defines up to 10 distinct, non-overlapping Mobile Country Code (MCC) Ranges, which are the first 3 digits of the IMSI. The FABR and RBAR applications consider an IMSI to be invalid for address lookup if the MCC portion of the decoded IMSI falls within any of the Reserved MCC Range configured by the user.

While searching for an IMSI in the Diameter message AVPs, if the MCC digits portion of decoded IMSI digits fall within one of the configured MCC Ranges, the IMSI digits will NOT be used for further Address Resolution. The FABR and RBAR applications will continue to search other AVP instances (if present), or next priority AVP (if configured) or next Routing Entity (if configured) for a valid address.

The two following MCC Ranges are reserved by telephony standards and are recommended to be configured in addition to other user-specified ranges:

• 000-199
• 800-899

On the Diameter Common, and then Network Identifiers, and then MCC Ranges page, you can perform the following actions:

• Filter the list of MCC Ranges, to display only the desired MCC Ranges.
• Sort the list entries in ascending or descending order by Start MCC values or End MCC values by clicking the column heading. By default, the list is sorted by Start MCC values in ascending ASCII order.

• Click Insert.

  The Diameter Common, and then Network Identifiers, and then MCC Ranges [Insert] page opens. You can add new MCC Ranges. If the maximum number of MCC Ranges (10) already exists in the system, the Diameter Common, and then Network Identifiers, and then MCC Ranges [Insert] page will not open, and an error message is displayed.

• Select an MCC Range in the list, and click Edit.

  The Diameter Common, and then Network Identifiers, and then MCC Ranges [Edit] page opens. The Start MCC, End MCC, or both for the selected MCC Range can be edited.

• Select an MCC Range in the list, and click Delete to remove the selected MCC Range.