Method for detecting a constant bit rate message in an ATM adaptation layer parameter message in asynchronous transfer mode

摘要

The present invention relates to an asynchronous transmission mode (hereinafter abbreviated as ATM), a method of detecting ID bit rate information in an AAL parameter message in a setup message included in broadband lower layer information in a Q.93B protocol To this end, the present invention receives a setup message or an ad-party message input from an information provider and stores it in a predetermined address of a memory, and then detects length information of a two-octet message for a setup message or an ad-A step of storing information in an address at a predetermined address, a step of successively incrementing a counter value set to a predetermined value in order to recognize an AAL parameter message, which is variable length information following header information of a corresponding message, , If the information identifier of the AAL parameter message is determined Detecting the length information of the 2 octets and storing the length information in a predetermined address of the memory, setting the octal length of the header information located at the leading end of the octal length information to find the corresponding octal including the AAL format information in the AAL parameter message A step of performing an AND operation of the octal information and an arbitrary bit value stored in the memory in order to detect the AAL type information in the corresponding octet obtained in the updating process, A step of successively incrementing a counter value set to a predetermined value in order to recognize the identity bit rate information of the next octet of the AAL format-1, and determining the information identifier thereof, In AAL format-1, a plurality of each kind of identity bit rate information of the next octet of the information identifier is judged The terminal can efficiently and rapidly detect the identity bit rate information in the AAL parameter message and provide corresponding service information to the network by the seventh process of outputting the service information corresponding to the corresponding type and providing the same to the network, Real-time concept of effective message interface between terminal and network.