A DCN includes at least one MME/SGSN and it might involve at least one SGW/PDN GW/PCRF. This component empowers supporters to be assigned to and served by a DCN is a standard basically utilized for making cordless phone frameworks. DCN depends on subscription data. DCNs may assist one RAT only, to assist multiple RATs. Networks deploying DCNs might have a default DCN, which is overseeing UEs for which a DCN isn’t accessible or then again if adequate data isn’t accessible to allot a UE to a DCN. One or various DCNs might be conveyed along with a default DCN that all offer a similar RAN.