LOW-PROBABILITY CONNECTION CALL REGISTRATION METHOD USING PAYLOAD PATTERN INDICATION FIELD IN CELL HEADER OF ATM ESS

摘要

1. Technical field to which the invention described in the claims belongs;The present invention relates to a low probability connection call registration method using payload type indication (PTI) field information in a cell header in an asynchronous delivery mode switching system.;2. Technical Challenges to be Solved by the Invention;The present invention provides a method for registering a low probability connection call (RPCC) using PTI field information indicating the occurrence information of a switching element in a cell header when an ATM cell encounters a congestion state passing through a specific switching element .;3. The point of the solution of the invention;The present invention increases the number of experience cells when the cell experiencing congestion by referring to the PTI field of the current serving cell header after setting the threshold value and increases the number of cells jammed if the number is greater than the threshold value within the unit time If this number is received more than the threshold within the unit time, it registers as a low probability connection call and requests call control for the code.;4. Important Uses of the Invention;The present invention is used for call control in an exchange system.