hi ,i have CME connected with unity express,iam facing issue with dtmf payload type the provider ask me to change the payload typ to 97 instead of 101 and 100,as per below log cme receiving a=fmtp:97 0-11 and sending a=fmtp:101 0-15 ,can any one help...

when i applied show atm vc int atmx/yi sawsoft vc not conecteddespite the link up and pvc is createdits solved when i changed the pvc#iwant know why this haappened, and how i can avoid it?