non-mandatory ISDN Information Elements

From: Ben Zheng (bzheng8989@yahoo.com)
Date: Tue May 02 2006 - 15:04:47 ART


Hi,
   
  What is the procedure taken if an unrecognized non-mandatory ISDN IE (Information Elements) is received by a network?
   
  I looked at Q.931 and could not get the clue.
   
  Thanks,
   
  Ben
   
   

                
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