Operate a private automatic branch exchange (pabx) switchboard hfo. C 08

Directory numbers

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  Always follow the manufacturer's instructions to handle directory numbers
  
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  The directory will be used to assign numbers to extensions and external lines
  
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  Staff and guest names will need to be assigned to the directory numbers
  
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  All directory details must be permanently stored in your PABX system
  
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  Details of all directory codes and country codes needed to make a trunk call must to be readily available. In some cases regularly dialled area codes could be permanently assigned to trunk lines for fast and easy accessibility
  
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  Staff need to be trained to read the directory numbers correctly some numbers might include the country code or others have a full number when on only the last 4 digits are used for internal calls, while others might need the '0' deleted when making a overseas call
  
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  Develop a system to list directory numbers such as first names first or family names first
  
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  Rearrange the positioning of the extension numbers to be most practical for the work use
  
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  Establish a system to maintain this data and always keep it up to date and accurate.