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Use this window to identify specific emergency prefix values that identify emergency calls for a specific Visited Public Land Mobile Network (VPLMN) ID. In networks supporting the S8 Home Routing (S8HR) roaming model, any calls that are identified as emergency calls from users identified as outbound roaming users are processed so that the calls are handled by the visited network rather than the home network. 

Refer to Emergency Call Handling for the Roaming Users in S8HR Model for more information.

To View Emergency Prefixes

On the SBC main screen, go to All > Profiles > Services > Hplmn Profile > Vplmn ID > Emergency Prefix. The Emergency Prefix window opens with all configured emergency prefixes shown.

VPLMN ID - Emergency Prefix Window

To Create an Emergency Prefix

You must associate each emergency prefix with a specific VPLMN ID within a specific VPLMN profile. The option to create an emergency prefix only becomes available after you select a VPLMN profile and VPLMN ID. 

To create a new emergency prefix:

  1. In the Vplmn Profile list, select the VPLMN profile to which you want to add the prefix.
  2. In the Vplmn ID list, select the VPLMN ID to which you want to add the prefix.
  3. Click New Emergency Prefix. The Create New Emergency Prefix window opens.

    Create New Emergency Prefix Window

  4. In Prefix Entry, enter a prefix that identifies an emergency call. The prefix can be up to 15 alphanumeric characters. 
  5. Click Save.

To Delete an Emergency Prefix

To delete an existing emergency prefix object:

  1. Click the radio button adjacent to the emergency prefix you want to delete.
  2. Click the red X at the end of the row.
  3. Confirm the deletion when prompted.
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