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

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

Between Which Two DTMF Relay Methods Does the Expressway Support