A Company s employees have been complaining that they have been unable to select options on the internal IVR of the help desk. IT support has been given Cisco UCM traces and below is the snippet of the SDP of the INVITE packet.
m=audio 25268 RTP//WP 18 101
a=rtpmap:0 PCMU/8000
a=rtpmap:18 G729/8000
a=ptime:20
a=fmtp:18 annexb=no
a=rtpmap:101 telephone-evenV8000
a=fmtp:101 0-15
How is this issue resolved?
A . Configure CODEC for G.729.
B . Configure DTMF for KPML.
C . Configure CODEC for G.722.
D . Configure DTMF for RFC 2833.
Answer: B
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