The invention discloses a No.7 signaling FISU signaling automatic filling method and device. The method comprises the following steps: S1, receiving data issued by upper
software; S2, judging whether the information is signaling information or not; S3, if the signaling information is the signaling information, judging whether the length of the signaling information is equal to 3, if so, performing a step S5, and if not, performing a step S4; S4, the signaling information is packaged through a
link layer and then sent to a 64kbit /
s link; and S5, recording the current signaling information, repeatedly
copying the current signaling information, packaging the copied content through a link, and sending the packaged copied content to the 64kbit /
s link. Signaling information sent by an upper-layer application is recognized, and after the FISU is distinguished, continuous
retransmission is achieved through the FPGA technology according to the characteristic that the number of the FISU is large. The frequent write operation of the upper layer
application software and the FPGA is reduced, the
software overhead of the MCU is reduced, and the
resource utilization rate is improved.