METHOD FOR DETECTING USER BACKWARD MAXIMUM BURST SIZE (CLP=O)MESSAGE IN BROADBAND ATM

摘要

In the Q.93B protocol, the present invention provides a reverse maximum cluster length of zero CLP in an ATM user cell rate message that defines a traffic parameter or a traffic parameter indicating a statistical characteristic of a signal source requiring call establishment. A method for detecting a message, comprising receiving a call setup message, classifying the call setup message in octets, assigning and storing a virtual address to each of the classified octets, and then storing the call setup message in a preset first and second virtual addresses. Logically combining two stored octets to read an 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. When the identifier of the user cell rate message is found, the call setup message classified and stored in octet units is stored. A second step of detecting and logically combining two octets stored in predetermined fourth and fifth virtual addresses to read the entire length of the user cell rate message; After the second step, while searching for an identifier of a reverse maximum cluster length of CLP = 0 while sequentially increasing an address value from a sixth virtual address point spaced from the third virtual address by a predetermined address interval, the sixth virtual address A third step of logically combining three octets stored sequentially from a seventh virtual address point spaced apart from a predetermined address interval from the third step of reading the reverse maximum cluster length message of CLP = 0; Search for whether or not an acceptable combination of reverse CLP = 0 reverse maximum cluster length messages is established, and if an acceptable combination of reverse CLP = 0 reverse maximum cluster length messages is established, return a reverse maximum cluster length message having CLP = 0. And a fourth step of outputting.