|
HI,Guys
As we know, in tradional PSTN network, when
the callee is a freephone(such as 800-******), there would be a charge
indicator in the alert(ACM) message to indicate that this is a free
phone.
But in SIP message, I can't find any field
to carry this information. Does anybody know the answer.
Thank a lot
Best Regard
Link
|
