For various (and quite horrible) reasons, I need to do the following a) Wait '2' seconds after I send an INVITE for *any* response b) Wait '4' seconds after I get a 100 response for a 18x (or higher) response c) Wait '60' seconds after the 18x for a 18x (or higher) response Sooo, can I change the timer *during* the transaction? i.e., something like fr_inv_timer = 2 if (response == 100) { reset fr_inv_timer to 4 seconds } elsif (response == 180) { reset fr_inv_timer to 60 } Or, is fr_inv_timer fixed once the transaction is setup? cheers -- ******************************************* Mahesh Paolini-Subramanya (703) 386-1500 x9100 CTO mahesh(a)aptela.com Aptela, Inc. http://www.aptela.com "Aptela: How Business Answers The Call" *******************************************