Interworking of DTMF delivery mode
Hi ,guys ! I'm now dealing with a tough problem related to DTMF .
The IVR of Enterprise supports only RFC 2833 to deliver telephone-event .however ,Carrier deliver the DTMF with "in-band" method. so ,The IVR cannot identify the DTMF correctly.
what NN4500 can do to solve this problem ? Is "SIP-KPML to RFC 2833 conversion"in configuration guide used to clear this kind problem ? Thanks for your reply.