SELECTIVE REDIRECTION METHOD AND ITS SYSTEM, AND ITS PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a selective redirection method for selecting whether redirection is to be utilized depending on the condition of a prior service and a posterior service, whether the redirection is to be utilized by each attribute of a caller user depending on the prior service condition and whether the redirection is to be utilized corresponding to the difference of provisional states of the redirection function among different networks. SOLUTION: A prior exchange 12 sets a value of redirection execution reason permitting redirection by taking a prior service condition into account to an address message IAM and transfers the value to a posterior exchange 13. The posterior exchange 13 starts redirection only when its reason agrees with the reason set in the address message and transfers its reason with an interruption message REL to the prior exchange 12.