What is CUG in Telecom?

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CUG stands for closed user group, this is a group configuration that limits access to the group members. Where in a CUG group can subscribe to call each other within the group. The group will be a subset of users that have been grouped to use certain SWIFT services and products in a defined context. In the data world CUG would be a group which carry the same privileges, for example access to certain pages, devices or folders. 

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