Disclosed are methods, systems, apparatus, and computer programs for communicating new link availability configurations for a node in an integrated access and backhaul (IAB) network. In one aspect, a method includes receiving a Radio Resource Control (RRC) message from an IAB node; determining, based on the RRC message, a new resource availability configuration for a backhaul resource associated with the IAB node; and in response to determining the new resource availability configuration, conditionally communicating with the IAB node over the backhaul resource according to the new resource availability configuration.