Which DTMF relay method configured on a SIP dial-peer will ensure that a media resource is not invoked by Unified CM for calls to UCCX IVRs?
A. sdtmf-relay h245-signal
B. dtmf-relay rtp-nte
C. dtmf-relay sip-notify
D. dtmf-relay sip-kpml
Which DTMF relay method configured on a SIP dial-peer will ensure that a media resource is not invoked by Unified CM for calls to UCCX IVRs?
C
UCCX just support dtmf out o band. the answer is C or D
https://www.cisco.com/c/dam/en/us/td/docs/ios-xml/ios/voice/cube_uccx/cube_uccx_interop_bestprac_guide.pdf