What is a CUG? The CUG (Closed User Group) allows you to add numbers to a group where you will have unlimited calls amongst each other. This feature is only applicable to accounts with pooled or shared bundle minutes. Related articles How many persons can I add to my CUG? How to contact my sales representative What is the cost of the CUG? How to add/remove a CUG on my corporate account How is a DIA delivered?