US Patent 7593412 Method to manage SAAL resources in distributed implementation environment

The invention proposes a method for managing of Signalling ATM Adaptation Layer (SAAL) resources performed in a sublayer comprising the steps of receiving a request from a Layer Management (LM); processing the request in the sublayer; judging whether the processing of the request has been successful, and forwarding a success message to the Layer Management (LM) in case the processing has been successful, or forwarding a failure message to the Layer Management (LM) in case the processing has not been successful. By this method it is guaranteed that the SAAL resources are available as long as the corresponding signalling link/channel is configured in a network element. It further enables detection of SAAL resource defects.