Message control method of level 3 signal message transmission buffer and recovery buffer

摘要

The present invention relates to a message transfer part level 3 (hereinafter referred to as 'MTP-3') signaling message transfer buffer and recovery buffer message control method in an ATM switching system. In a message control method of a signaling message transmission buffer and a recovery buffer applied to an ATM switching system including (MTP-3), an empty space queue pointer value of a common memory is received by receiving a message from a signaling message processing block for each sub-system. A first step (100 to 107) of reading and allocating a common buffer and storing a message in the allocated buffer;;Receiving a message transfer request, checking the location of the buffer to transmit all messages stored in the buffer, concatenating the space of the transmitted message to empty space, and updating the start and end of the buffer pointer (108 to 114) ), And upon receiving a fault signal on the signal link, requests buffering of the user-side message, stores the message in the transmit buffer, sends a recall request message to retrieve all messages, and sends a signal link selection code associated with the failed signal link. In the event of a signal link failure in realizing the NNI signaling function in an ATM switching system, including the third step (115 to 127) of retransmitting the recovered message and transmitting the buffered message when routing to another available link is determined. Efficient buffering and retransmission of messages reduces the likelihood of loss of signaling messages. To increase the reliability of the network, and also has the effect that encourages the efficient use of system resources by managing the flexibility in the size of each buffer in the distributed module under distribution.