Refer to the exhibit.
Audio calls from a CSF device fail. Which command set likely resolves the issue?
A. configure terminal voice-port 0/1/0:15 output attenuation -4
B. configure terminal controller e1 0/1/0 bearer-cap speech
C. configure terminal interface serial 0/1/0:15 output attenuation -4
D. configure terminal voice-port 0/1/0:15 bearer-cap speech
Agree with John, it should be configured on the voice port and not on the controller.
It should be D
https://www.cisco.com/c/en/us/support/docs/voice/h323/14006-h323-isdn-callfailure.html
I concur