What is the difference between point-to-point and point-to-multipoint configuration?

The main differences between point-to-multipoint (Standard Access or S/T reference point) and point-to-point (System Access or T reference point) configurations are:

The number of devices that you can plug into the box on the wall

  • Point-to-multipoint allows you to connect up to eight separate devices to the box on the wall.
  • Point-to-point allows you to connect just one device. This is usually a PBX.

The type of telephone number range that you can use

  • Point-to-multipoint allows up to eight MSN telephone numbers.
  • Point-to-point uses DDI numbers, which come in blocks of 10. There is no maximum to the number of DDIs you can have.

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