Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; Operator Determined Barring (ODB) (V11.0.0; 3GPP TS 22.041 version 11.0.0 Release 11)
"The present document describes the network feature Operator Determined Barring (ODB). This allows the network operator or service provider to regulate@ by means of an exceptional procedure@ access by the subscribers to services (both Circuit and Packet Oriented)@@ by the barring of certain categories of outgoing or incoming calls/Packet Oriented Services or of roaming. ODB shall take effect immediately and shall terminate ongoing calls and bar future calls/Packet Oriented Services. The purpose of this network feature is to be able to limit the service provider""s financial exposure to new subscribers@ or to those who have not promptly paid their bills. It may only be applied to the service provider""s own subscribers."