at least one processor and

at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to:

receive from a serving cell of a communication network information comprising a first contention based random access channel configuration and a second random access channel configuration associated with at least a first service, wherein the second random access channel configuration is inactive and whose activation is associated with at least one activation timer;

transmit a first physical random access channel message using a resource of the first contention based random access channel configuration;

determine a condition holds after reception of a network message and activating a resource of the second random access channel configuration based on the at least one activation timer; and

based on the determining, transmit a second physical random access channel message using a resource of the second random access channel configuration.