One or more bands of frequencies advertised by a base station may include frequencies that some UEs cannot support. For example, an advertised band of frequencies for a particular cell may include newly available frequencies that a (e.g., legacy) UE may not be configured for, or capable of, supporting. For instance, a first subset of the frequencies within a particular band (e.g., “band X” for example purposes) may be generally supported by legacy and current UEs. At some time after such legacy UEs may have been put into operation, a second, different subset of the frequencies within band X may be made available. In response, network equipment may be deployed and/or configured to support the second subset of frequencies. Among such network equipment may be base stations that may advertise that they support a cell using the band X of frequencies. However, these base stations may provide service in band X using the second subset of frequencies that may not be supported by all legacy UEs. For example, in the newer systems configured to support the newer second subset of frequencies, to distinguish this new second subset of frequencies cell from the older first subset of frequencies, a new system message information element (IE) (e.g., “NS_xx”) may be broadcast in cells using the newer second subset of frequencies within band X. Legacy devices may not understand this new information in the broadcast message and may therefore treat the in which the message was broadcast as barred