When accessing Cisco Unity Express are not being acknowledged by the system. This configuration is found on the voice-enabled IOS router: dial-peer voice 6800 voipdestination-pattern 5…session protocol sipv2session target ipv4:10.3.6.127codec g711ulawno vad What is the configuration command that is needed to complete the configuration and solve the problem?

A user has reported that keys that are pressed when accessing Cisco Unity Express are not being acknowledged by the system. This configuration is found on the voice-enabled IOS router: dial-peer voice 6800 voipdestination-pattern 5…session protocol sipv2session target ipv4:10.3.6.127codec g711ulawno vad What is the configuration command that is needed to complete the configuration and solve the problem?
A. dtmf-relay sip-notify
B. dtmf-relay rtp-nte
C. dtmf-relay cisco-rtp
D. dtmf-relay h245-signal