METHDO FOR DETECTING USER BACKWARD PEAK CELL RATE (CLP=O)MESSAGE IN BROADBAND ATM

摘要

In the Q.93B protocol, the present invention provides a reverse peak cell rate message with a CLP of 0, which is a traffic parameter indicating a statistical characteristic of a signal source requiring call setup or a feature for traffic control. When the call setup message is received, the call setup message is classified into octets, the virtual octets are stored in the classified octets, and then stored in the preset first and second virtual addresses. Logically combining the two octets to read the entire length of the call setup message; After the first step, the identifier of the user cell rate message is searched while increasing the address value sequentially from the preset third virtual address. If the identifier of the user cell rate message is found, the call setup message is classified and stored in octet units. A second step of detecting and logically combining two octets stored in predetermined fourth and fifth virtual addresses and reading the total length of the user cell rate message; After the second step, an identifier of a reverse peak cell rate of CLP = 0 is searched from the sixth virtual address while sequentially increasing an address value from a sixth virtual address point away from the third virtual address by a predetermined address interval. A third step of logically combining three octets sequentially stored from a seventh virtual address point spaced by a predetermined address interval to read a reverse peak cell rate message of CLP = 0; Search for whether or not an acceptable combination of the reverse peak cell rate messages with CLP = 0 is generated, and if an acceptable combination of the user reverse peak cell rate messages with CLP = 0 is established, output the user reverse peak cell rate message with CLP = 0. It is characterized by comprising a fourth step.