As per the various RFC (i.e. for M3UA, IUA and SUA), its not described that the ASP end point will not retransmit the ASP SM/TM messages after receiving an ERROR message. Should Endpoints Retransmite control message after receiving error from the per end. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com _______________________________________________ Ietf@xxxxxxxx https://www1.ietf.org/mailman/listinfo/ietf