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Throttle a PBX phone prefix

To prevent PBX systems from having too much phone traffic, you can limit concurrent telephone calls. Limiting the number of calls is called PBX throttling and it is essential when you have PBX systems with a limited number of incoming telephone lines.
  1. In the 
    NDS
     console, click 
    Management
     > 
    Account
    .
  2. Highlight a specific account.
  3. Select the 
    Phone Prefix Throttling
     tab in the 
    Account details
     section on the bottom of the 
    NDS
     console.
  4. In the 
    Item Detail
     section, enter the following values:
    • In the Prefix field, type 
      1
      , the area code, and the prefix of the phone lines without spaces or dashes.
    • In the 
      Line Limits
       field, enter the number of lines to be used during an alert for that account.
  5. Click 
    Save
    .