Between which two DTMF relay methods does the Expressway support interworking? (Choose two.)
A. unsolicited notify
B. RFC 2833
C. KPML
D. passthrough
E. H.245 user input indication
Between which two DTMF relay methods does the Expressway support interworking? (Choose two.)
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answerhappygod
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Between which two DTMF relay methods does the Expressway support interworking? (Choose two.)
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