What is CUG (Closed user group)?

A closed user group (CUG) is a group arrangement that bound access beyond the characterized set of group individuals. This sort of arrangement can be valuable in digital and telecommunications service plans. A closed user group can make and receive calls. This service is provided by versatile administrators to portable endorsers. CUG members can settle on and receive calls to and from different networks outside the CUG bunch as well. This assistance is appropriate for SMS.