A communication system employs a method for exchanging communicated signals between a remote base site (e.g., 63) and a central site (205) on a communication resource (e.g., 77) assigned to the remote base site (63). The central site (205) or the remote base site (63) determines that a signal must be exchanged between the remote base site (63) and the central site (205). The remote base site (63) then allocates the communication resource (77) for exchanging the signal from those communication resources (e.g., 76 and 77) assigned to the remote base site (63) for exchanging signals with communication units (e.g., 18) in the service coverage area (53) of the remote base site (63).